tag:blogger.com,1999:blog-32958357762433732752024-03-19T11:03:28.819+08:00Geotim's BlogsOur news and musings with a geological/musical/artistic bias.Unknownnoreply@blogger.comBlogger28125tag:blogger.com,1999:blog-3295835776243373275.post-89360765634560192452015-09-18T18:35:00.001+08:002015-09-18T18:35:44.236+08:00My projection for the next decade!<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjtz1hCs8frHGRODLSwtEKA_QR-qFTzA1MESFJP_3EG-7ObZA2aSBI6_Iluqg1HfhW42xlJlb4_hAZntN8VrGhC-HCT-6f_gO5MTpVPPtVQ7jhMrvPTnSGmOWj-qY27au6BonBhRTvfPR3/s1600/babies.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="294" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjtz1hCs8frHGRODLSwtEKA_QR-qFTzA1MESFJP_3EG-7ObZA2aSBI6_Iluqg1HfhW42xlJlb4_hAZntN8VrGhC-HCT-6f_gO5MTpVPPtVQ7jhMrvPTnSGmOWj-qY27au6BonBhRTvfPR3/s640/babies.PNG" width="640" /></a></div>
<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-85050629250070383932015-01-08T12:13:00.000+08:002015-01-08T12:13:23.074+08:00Journey to the perfect stir-fry!The latest creation occurred quite a bit by chance. The simplicity was actually down to limited ingredients remaining in a depleted fridge and store cupboard. The result was texturally surprising with a great meld of flavours to top it off. Remarkably cheap at AUD$4 per serve, taking a leaf out of 'Save with Jamie'.<br />
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Here you go: Serves 4<br />
<em></em><br />
<em>Ingredients</em><br />
1 x 250g pack of 4 slabs of extra firm tofu (Thai seasoned but patted dry) cut into wedges about 5 cm long, 1 cm wide; spray lightly with canola oil and sprinkle with salt.<br />
3-4 Tbsp black bean and chilli mix (a variety that is quite salty and oily).<br />
3 rings of soba noodles (about 200g).<br />
2 small capsicum bell peppers (1 red, 1 green) or 1.5 large ones cut into wedged strips about 6 cm long, 0.5 cm.<br />
1 large carrot cut into strips about 6 cm x 1 cm x 2 mm.<br />
3 cloves garlic coarsely chopped<br />
1 Thai red chilli coarsely chopped, including seeds.<br />
1 Tbsp coarsely chopped ginger<br />
1 small or 1/2 large brown onion cut into 1cm wide strips<br />
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<em>Procedure [with notes]</em><br />
Bring large wok to high heat and spray on a few squirts of canola oil. Add tofu and stir-fry using a after it starts to brown add 1 Tbsp of black bean-chilli mix. Continue to fry until crispy and set aside in a mid-sized metal bowl. [<em>This puts a lot of oil into the room, so best to do this outside if possible...on a BBQ side-stove works well as they usually have high-flow gas burners</em>.]<br />
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Start off the soba noodles boiling for 3 mins.<br />
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Add capsicum to the wok. Once fried add it to the metal bowl. [<em>This allows most of the moisture to leave independently of the other ingredients so that they do not steam...it also allows the capsicum to fry down well themselves without steaming</em>.]<br />
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Add onion, carrot and some more canola oil to the wok. After 1 min, add the chilli, garlic and ginger. After another minute add the rest of the black bean-chilli mix shortly followed by the contents of the metal bowl. Stir well and then allow flavours to meld while off the heat as you drain the noodles well. [<em>Again noodles need to be drained well and then added immediately to the wok so as not to add moisture to the dish and also so as not to give them time to stick to each other.</em>]<br />
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Add noodles and mix well while cutting down through some of the noodles to shorten their length to about half (i.e. about 10 cm). [<em>The combination of these relatively short noodles and the wedge-shaped cuts in the veg, together with the overall dry and sticky nature of the dish makes it easy to pick up with chop sticks. The attention to texture really makes the flavour leap out in the mouth too.</em>]<br />
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Serve in bowls, eat with chop sticks! Probably goes well with a lager but when you smell the food, that won't be high on the list of priorities.<br />
Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-46397753288964422552015-01-05T17:54:00.004+08:002015-01-05T17:54:58.260+08:00A day in the life of Perth's summer heat waves and a climatic outlook<div class="separator" style="clear: both; text-align: center;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizyBm0o_gQiiP-ES2iCLyNzJpkVYVS1jb98j8f4UpV93rGAVb3ZVrtBeTEUNvgTWyK0xP3v74mf-kigWAN3qRFMw2gFkZDv4prT0Q8xFBhj8YakORXO-jzHkXAV58nsj87y9dxO1mwTcY8/s1600/Capture.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizyBm0o_gQiiP-ES2iCLyNzJpkVYVS1jb98j8f4UpV93rGAVb3ZVrtBeTEUNvgTWyK0xP3v74mf-kigWAN3qRFMw2gFkZDv4prT0Q8xFBhj8YakORXO-jzHkXAV58nsj87y9dxO1mwTcY8/s1600/Capture.PNG" height="310" width="320" /></a></div>
The above graph shows the temperature as measured in Perth (blue dots) every half hour over the last 4 days. The spiky one going up to nearly 45 C was today. The hottest two days show that the sun does its work in the mornings at a similar rate but starting at different night time temperatures (i.e. the slopes are the same). All the days show a marked drop off as soon as the sea breeze starts to hit whereby the wind direction flips from east to west and we get some cooler sea air affecting the temperature. There is often the sharpest shift of the day associated with this. The red line shows the Pearce Air Base today (5th Jan) which is currently experiencing thunderstorms. At 2 pm it had a huge hit whereby convection was initiated and clouds formed producing a massive 8 degree fall in just 30 mins. The overall trend in the evenings is one of gradual decline however and it shows how the sun's energy dissipates slower than it is received in the morning due to city concrete radiating it back into the air. We can also see that the nice cool evenings of last week have been superseded by 24C night time minima owing to a new air mass swinging in from the east. This is due to the precession of large air pressure gyres typically going from west to east, producing large-scale change in wind patterns.<br />
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The second of my weather-related musings involves a 120 year look at Perth's climate using average monthly data since 1876. See below:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrPU-oDx86UFccBPZPGDR68zV9x0c6RnsPgzB448PmmRoBBlfwUMHty1_acpBU9H6TMxbFKzN3EEf8pxpjdxLINz9gevG4DwNGCSslnv1P79IBBvaGT-jq9fCuqeqG7S95afCAOribzOP2/s1600/Capture2.PNG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrPU-oDx86UFccBPZPGDR68zV9x0c6RnsPgzB448PmmRoBBlfwUMHty1_acpBU9H6TMxbFKzN3EEf8pxpjdxLINz9gevG4DwNGCSslnv1P79IBBvaGT-jq9fCuqeqG7S95afCAOribzOP2/s1600/Capture2.PNG" height="200" width="144" /></a></div>
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiudnVnQxShhjyAJrXAPXaFr26vfF01O90DRtBhGmP0i3-kJ039nVq7ZsFyqg70rRUXzrlxA3C_1zqfayncLNCNlrOohPSrhmJ22yIp0qtBKV_vpqS2PzlJjj1GqrczUachtY7sZvod4NFQ/s1600/Capture3.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em; text-align: center;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiudnVnQxShhjyAJrXAPXaFr26vfF01O90DRtBhGmP0i3-kJ039nVq7ZsFyqg70rRUXzrlxA3C_1zqfayncLNCNlrOohPSrhmJ22yIp0qtBKV_vpqS2PzlJjj1GqrczUachtY7sZvod4NFQ/s1600/Capture3.PNG" height="320" width="264" /></a><br />
Each dot represents an annual average from a 20 year period. The vertical scale is the same in both plots showing average monthly rainfall for each year in mm which varies considerably from over a metre down to around 40 mm in the most recent decade. The horizontal scale in the upper graph is the average minimum temperature for the year; the lower plot has the average max. The black line with grey dots shows the average of these statistics for a 10 year period, ending up towards the drier end in each case. <br />
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Clearly, a significant turning point is reached in the 1930s to 40s where a cooling max and warming min temp switches to a pulse in wet weather. Then the max temp just continues to rise and we get dryer. At the same time the min increases dramatically, then decreases dramatically and now we're on a slight increase again.<br />
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So its not a story of all doom and gloom but there we are in two decades of the hottest and driest times it has been since 1876. However it is conceivable that prior to 1876 it was also hotter and dryer, similar to today, according to an extrapolation on the lower graph. 2010 and 2006 were the driest two of the last 120 years. Therefore, if we are indeed entering a new age of global warming (i.e. beyond what can be explained by the early phase of the industrial revolution) then we are in for hot and dry times. The next few decades will be interesting in Perth because we may either see a return to the seemingly cyclical behaviour on a ~150 year scale...or we'll go off on a new path to uncharted and dry territory.Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-16329129383390889102015-01-05T13:13:00.003+08:002016-04-15T19:36:43.498+08:00Understanding some odd mineral and rock combinationsHere I try to chat about and list some definitions (as I understand them at least) associated with some loose geological terminology revealed by various groupings of minerals and rocks used by geologists.<br />
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Firstly, there are processes whereby groups of minerals are formed, and these are given rock names. Secondly, there names given to groups of rocks, which require an interpretation about the way they formed. Thirdly, there are groups of groups of rocks, which stretch the bounds of what we can say reliably.<br />
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<strong><span style="font-size: large;">(1) Groups of minerals</span></strong><br />
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As an intro 'exsolution' is where phases (usually 2-3) crystallize at the expense of a host crystal and form as lamellae. The exsolved products as a whole is the same composition as host. The geometry of exsolved phases is typically crystallographically controlled. e.g. <strong>Perthite</strong>: 'Rock' name for exsolved feldpars.<br />
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<strong>Symplectite</strong>: phases (usually 3 or more) crystallize as a corona around host crystal. Composition may vary slightly, involving originally adjacent phases.<br />
<strong>Kelyphite</strong>: Type of symplectite formed around garnet, typically from kimberlite where it reacts with volcanic liquids to form fine-grained intergrown serpentine+phlogopite+oxides<br />
<strong>Myrmekite</strong>: Type of symplectite formed within K-feldspar, cosnisting of intergrown quartz and plagioclase.<br />
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There are also other kind-of-symplectites which are alteration products of particular minerals involving partial oxidation and/or hydration:<br />
<strong>Pinite</strong>: Hydrous alteration of cordierite yielding intergrown muscovite+illite+smectite+other clay minerals±oxides<br />
<b>Bastite:</b> is a textural term for platy replacement along cleavage planes in orthopyroxene and rarely clinopyroxene.<br />
<strong>Leucoxene: </strong>Oxidation of titanium-bearing minerals yielding intergrown rutile+clay minerals+Fe-oxides<br />
<strong>Iddingsite:</strong> Oxidation ± hydration of olivine yielding intergrown smectite+hematite±Fe-hydroxides<br />
<strong>Saussurite: </strong> Oxidation + hydration of plagioclase yielding intergrown epidote+sericite±scapolite<br />
<strong></strong><br />
Cancrinite: Single mineral formed as as result of hydration and cabronation of nepheline....countless other examples of hydration which forms single replacement minerals ...<br />
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<span style="font-size: large;"><strong>(2) Groups of Rocks</strong></span><br />
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On the other end of the spectrum there are many (often debatably used) rock names referring to groups of rocks. Typically the useage is process-oriented and hence interpretation rather than observation is implied:<br />
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<strong>Ophiolite:</strong> sequence of mafic-ultramafic volcanic and intrusive rocks produced as a result of sea-floor spreading, forming typical oceanic crust. This is then thrust onto continental crust and hence preserved resulting in 'ophiolite'.<br />
<strong>Migmatite: </strong>literally 'mixed-rock' formed of host, melt and restite components. Strictly, melt is derived from in-situ melting of the host but term is also used generally for melts which are injected into hosts.<br />
<strong>Amphibolite</strong>: a metamorphic facies describing all rocks that have been taken to medium pressure and temperature. Also, specifically referring to a metabasalt composed primarily of amphibole and plagioclase. Granulite, eclogite, blueschist also refer to facies.<br />
<strong>Meteorite</strong>: wide compositional suite of extra-terrestrial rocks which have landed on earth.<br />
<strong>Boninite/Komatiite/Kimberlite: </strong>(others): Suites of volcanic rocks defined by their geochemical composition and may easily be confused with similar rocks formed from very different tectonic processes.<br />
<strong>Cataclasite/breccia/mylonite: </strong>fault/shear zone rocks of particular grain size and texture distributions.<br />
<strong>Turbidite</strong>: sequence of greywackes and mudstones interlayered (may be formed of repeated 'Bouma sequences') as a result of turbidity currents in the middle depths of oceans.<br />
<strong>Hyaloclastite</strong>: Volcaniclastic rock consisting of transported broken glass.<br />
<strong>Biomicrite</strong>: Limestone made of shells set in carbonate mud.<br />
<strong>Olistostrome/Olistolith/Melange: </strong>useage<strong> </strong>implying landslide/tectonic activity yielding a mixing of rocks.<br />
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<strong><span style="font-size: large;">(3) Groups of groups of rocks</span></strong><br />
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Groups of groups of rocks are even more strange and interpretive leaving geoloists questioning such things as plate tectonics, plumes and long geological timescales. Some of these are: <br />
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Orogens<br />
Continental/oceanic arcs<br />
Continental/oceanic plateaux<br />
Rifts <br />
Coninental margins<br />
Impactites/impact structures<br />
Terranes (continent/microcontinent fragments)<br />
Greenstone belt<br />
BasinUnknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-11063070621042860902014-12-24T16:40:00.001+08:002014-12-24T16:46:36.139+08:002014 SummaryWell, there's a baby boy brewing up a storm, so this was the year where we get a chance to do rennovations and preparations for the time ahead. Among the chaos we made sure to enjoy the anticipation and gratitude for these new things. <br />
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Taking off from a year ago when we introduced light and coolth into our lounge with the window/aircon renovation we then proceeded with the oven, fan, blinds in the kitchen, a whole new bathroom, a complete revamp of the spare room (no more yucky colours or redundant space). The box room got a damn good clear out too...lucky for the charity store...and it is now functional.<br />
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We did quite an epic adventure with Carl to the south coast over Australia Day in January (see <a href="http://geotim.blogspot.com/2014/02/western-australias-south-coast.html">http://geotim.blogspot.com/2014/02/western-australias-south-coast.html</a> <a href="https://www.facebook.com/media/set/?set=a.10100769130274171&type=1&l=829ad021a7">https://www.facebook.com/media/set/?set=a.10100769130274171&type=1&l=829ad021a7</a>)<br />
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Outside we now have lights around the pergola which makes for a bit of a Christmasy display too. The cracks in the wall from the palm trees have been patched up. I took out the old barbecue and we're in with the new gas one (we use it much more as it doesn't need 40 mins to get going each time). I did a lot of gardening as we are now getting all the beds to our liking, so lots of weeding and composting and replanting, helping out with our shared area too. Fawna has been successful in germinating a variety of chillies for a tasty start to 2015. The biggest single task was getting one of the palm roots out, which according to some requires dynamite! But with the help of Stu, a lot of drilling and wedging, a giant wrecking bar and about 2 full days of work it is out!<br />
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As for holidays we did manage a family visit to UK where we experienced a lovely springtime with family and friends. Unfortunately Fawna was ill the WHOLE time but she still managed to get up to England's highest peak (Scafell). This was one end of our NW-SE cross section from Cumbria via Birmingham (to catch up with Lara and Barry) and to London and Kent. The latter including a game of snooker at Pat's. We had a cosy little time at Wasdale with Mum and Dad and celebrated our first wedding anniversary there. Great also to see Suz and Brendan's place for the first time outside of a Skype chat and get an idea of the East Dulwich massive with a tour of the neighbourhood.<br />
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We treated ourselves to a stopover in the Seychelles on the way back. These were incredible days on the isle of La Digue. Quite a paradise and high contenders for best beachscapes in the world. The other holiday we managed ended just a couple of weeks ago when Dane visited and we showed him around Perth. We had a relaxing time up at Kalbarri too walking around gorges and craggy coasts. Immaculate weather for the most part...the garden is now complaining for lack of water.<br />
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Workwise, I've started supervising a keen PhD student, which has been rewarding this year. The Chinese joint project commitment is over which will free up some time and I also managed to win best talk at our annual lectures with Fawna also getting credit for a great talk. Work is being quite friendly to Fawna who is progressing well and gaining more recognition of her talents. With a few necessary field stints we're both a little ahead of the game so that we don't have much, if any, mapping to do next year. So, after some progress at work we now are enjoying the summer and a short holiday before the lead up to the birthing date probably towards the end of Feb.<br />
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Best wishes to all, Merry Christmas!Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-26925968275822905732014-02-25T12:38:00.001+08:002014-02-25T12:38:39.578+08:00A collection of rocks from Western Australia<span style="font-family: Georgia, "Times New Roman", serif;">[in preparation] </span><br />
<span style="font-family: Georgia, "Times New Roman", serif;"></span><br />
<span style="font-family: Georgia, "Times New Roman", serif;">Western Australia has some peculiar, unique and amazing rocks. This post is to highlight a selection of some of the stand-out ones I have had the fortune to encounter over the last 7 years of travelling and geologising.</span><br />
<span style="font-family: Georgia, "Times New Roman", serif;"></span><br />
<span style="font-family: Georgia, "Times New Roman", serif;">1. The Jack Hills area — The world's oldest mineral / Australia's oldest rock</span><br />
<span style="font-family: Georgia, "Times New Roman", serif;"></span><br />
<span style="font-family: Georgia, "Times New Roman", serif;">2. Oxide horizons from Coobina, Windimurra</span><br />
<span style="font-family: Georgia, "Times New Roman", serif;"></span><br />
<span style="font-family: Georgia, "Times New Roman", serif;">3. Murchison Mineral Field banded iron formation</span><br />
<span style="font-family: Georgia, "Times New Roman", serif;"></span><br />
<span style="font-family: Georgia, "Times New Roman", serif;">4.</span> Micas of the Murchison, including the Orbicular Granite<br />
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5. The Archean Komatiites and basalts<br />
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6. Alteration, exhumation and oxidation — Painted RocksUnknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-80341870217253382602014-02-12T09:42:00.000+08:002014-02-12T10:02:34.677+08:00Western Australia's South Coast: An itinerary of forays to the best of the headlands and bays<span style="font-family: Verdana, sans-serif;"></span><br />
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<span style="font-family: Verdana;"><strong>Stats</strong>: 900 km east to west, 3500 km roundtrip, February ocean ~22°C at coast, ave air temp. 25°C, end of school holidays but still peak season.</span></div>
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<span style="font-family: Verdana, sans-serif;">Day 1: Perth-Esperance (via Peak Charles)</span></div>
<span style="font-family: Verdana, sans-serif;">Day 2: Esperance coast</span><br />
<span style="font-family: Verdana, sans-serif;">Day 3: Esperance-Cape Arid (via Cape Le Grande)</span><br />
<span style="font-family: Verdana, sans-serif;">Day 4: Cape Arid coast</span><br />
<span style="font-family: Verdana, sans-serif;">Day 5: Cape Arid-Orleans Bay</span><br />
<span style="font-family: Verdana, sans-serif;">Day 6: Orleans Bay coast</span><br />
<span style="font-family: Verdana;">Day 7: Orleans Bay-Esperance</span><br />
<span style="font-family: Verdana;">Day 8: Esperance-E. Fitzgerald (via Hopetoun)</span><br />
<span style="font-family: Verdana;">Day 9: E. Fitzgerald-W. Fitzgerald</span><br />
<span style="font-family: Verdana;">Day 10: W. Fitzgerald-Albany (via Bremer Bay and Two Peoples Bay)</span><br />
<span style="font-family: Verdana;">Day 11: Albany-Margaret River (via Denmark)</span><br />
<span style="font-family: Verdana;">Day 12: Margaret River-Yallingup (via Boranup Forest and beach)</span><br />
<span style="font-family: Verdana;">Day 13: Margaret Rivermouth and coast</span><br />
<span style="font-family: Verdana;">Day 14: Geographe Bay and Cape Naturaliste</span><br />
<span style="font-family: Verdana;">Day 15: Yallingup-Perth</span>Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-3295835776243373275.post-17715594357240772032014-01-10T13:25:00.002+08:002014-01-11T13:56:15.206+08:00Diamond sky: Remembering a fabulous frosty afternoon in Antarctica<span style="font-family: "Trebuchet MS", sans-serif;">I was with 30 other 'happy campers' at our field camp training course in October 2011. It was going to be a cold night (-30°C) but the afternoon was a pleasant </span><span style="font-family: 'Trebuchet MS', sans-serif;">-20°C</span><span style="font-family: "Trebuchet MS", sans-serif;">, the sky was blue and the sun was 'high' in the sky (high at least for being 77°S...around 18</span><span style="font-family: 'Trebuchet MS', sans-serif;">° </span><span style="font-family: 'Trebuchet MS', sans-serif;">elevation). Around 3pm the sky started to become hazy and some hints of sectors of faintly coloured haloes started to appear around the sun with Castle Crag and Mount Terror in the background (Photo 1).</span><br />
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<tr><td style="text-align: center;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8zG716sA4wtUskaesjL_rxkSXuHA7uKF7Ymt0a0Nzs8Tc30iPzQAWlHRvwzgvagQHMTNyAmZsm7G7QXMag-Oh57-OL-k1Xvc8Yr6iJispKHo59bwogVKeFSB5ceAioCgIf1lMTksIZHDz/s1600/DSC_0172a.jpg" height="113" style="margin-left: auto; margin-right: auto;" width="200" /></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Photo 1: Sundog, Halo, Diamond Dust in front of Castle Crag, McMurdo, Antarctica (Photo: TJI)</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Drawing 1: after Photo 1 (TJI) </td></tr>
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<span style="font-family: "Trebuchet MS", sans-serif;">The haze became more obviously enveloping and was composed of tiny ice crystals called 'diamond dust'. So-called apparently because they look like diamonds under the microscope. As you will see, these are particularly awesome in terms of their optical effects and these are most dramatic when the crystals settle slowly in the breeze so that they are all oriented in a similar fashion.</span></div>
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<span style="font-family: Trebuchet MS;">As the icy dust came around us the most obvious thing to see was the parhelic circle that extended all the way around us (even looking directly away from the sun, though faintly). Then the sundogs shone out as the second brightest things in the sky after the sun, located at the left and right sides of the first halo. The second halo was fainter (see photo 2) at 46</span><span style="font-family: 'Trebuchet MS';">°from the sun</span><span style="font-family: 'Trebuchet MS';">. There were even two fuzzy patches marking out 'negative sundogs' located looking away from the sun, these are called 120° parhelia (drawing 2). At the top of the first halo there was an 'upper tangent arc' providing a mystical veil quality looking above the sun. </span></div>
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<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "Trebuchet MS", sans-serif;">Drawing 2: Dome reconstruction of optical phenomena seen (TJI)</span></td></tr>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoKhvHnqSEYjp-6XPgSvxvq8htOe6JYg9kboy-RQhQMA_LfnE9bVZOHjfyEXC9WFx2_0-KhBAJa8t5gh6kQPEe2UK6Id3tm69fgM5Rgg7146THwXwcIUYFvtL_ZxKR9_S1BXfTYLv5TZRa/s1600/Capture.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: "Trebuchet MS", sans-serif;"></span></a><br /></div>
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<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "Trebuchet MS", sans-serif;">Photo 2: Second halo and parhelic arc extending over Mt Erebus (TJI)</span></td></tr>
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<span style="font-family: "Trebuchet MS", sans-serif;">At first this was so spectacular that we didn't even notice that if you looked up at the top of the second halo, there was something quite magnificent. Photo 3 sh</span><span style="font-family: "Trebuchet MS", sans-serif;">ows the inverted rainbow appearance of a 'circumzenithal arc' which smiles down at you from almost directly overhead</span><span style="font-family: "Trebuchet MS", sans-serif;">. This arc circumscribes a point 90° above the angle of the sun and touches the second halo. Quite unbelievable if you are not expecting it (like me). Luckily I had just bought a 15mm wide-angle lens which was able to capture these all at once (Photo 3) since the angle of view is >90°.</span><br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjlWFme-t5jtAX655FY-xZ7pEiZz77TYz3Zsdr1wsuRbBjuiZRbc6Ik0v-ZQjSmbBoQJbadDh__Zw-6UsjIP4jF0u_5UaoyfYcZOAqe9okY1_dGBkpyMDF-_NXcU3MST3FlUNsfpM0VyyWb/s1600/DSC_0185.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjlWFme-t5jtAX655FY-xZ7pEiZz77TYz3Zsdr1wsuRbBjuiZRbc6Ik0v-ZQjSmbBoQJbadDh__Zw-6UsjIP4jF0u_5UaoyfYcZOAqe9okY1_dGBkpyMDF-_NXcU3MST3FlUNsfpM0VyyWb/s1600/DSC_0185.JPG" height="200" width="132" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "Trebuchet MS", sans-serif;">Photo 3: 'Happy Campers' under diamond sky and a circumzenithal arc (TJI)</span></td></tr>
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<span style="font-family: "Trebuchet MS", sans-serif;">Over the course of 30 mins the diamond dust slowly dissipated and after an hour the show was over. I felt like I had been treated to a vision from (a very cold) heaven with these beautiful traces, arcs, colours drawn out all around us. Probably the closest thing I have had to a religious experience as it turns out. Coming from a mineralogical background I could not help but conjure up crystallographic analogies as the view was very much like being in the centre of a stereonets (used for stereographic projections...Drawing 2 is based on this concept). It was like we were inside a giant imaginary hexagonal ice crystal with rays of light bouncing around in a crazy magical kingdom! </span><br />
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<span style="font-family: "Trebuchet MS", sans-serif;">In one of my photos I did notice that a sun pillar had formed at a later stage in the afternoon below the sun. These ice-related optical phenomena can also show many types of pillars and arcs. Here is an outstanding website on a wide range of </span><span style="font-family: 'Trebuchet MS', sans-serif;">optical phenomena: </span><span style="font-family: "Trebuchet MS", sans-serif;"><a href="http://www.atoptics.co.uk/halosim.htm">http://www.atoptics.co.uk/halosim.htm</a></span><br />
<span style="font-family: Trebuchet MS, sans-serif;"><br /></span>
<span style="font-family: Trebuchet MS, sans-serif;">These guys also provide an amazing piece of software called 'Halosim' which allows you to define different populations of differently shaped and oriented ice crystals. We tried this over the course of a morning and found that we needed four populations to explain the array of haloes I saw. </span><br />
<ol>
<li><span style="font-family: Trebuchet MS, sans-serif;">37% hexagonal plates oriented randomly ==> 23° and 46°haloes</span></li>
<li><span style="font-family: Trebuchet MS, sans-serif;">45% hexagonal plates dispersed 3 degrees on a vertical axis ==> parhelic circle, 120° parhelic spots and a one-sided circumzenithal arc.</span></li>
<li><span style="font-family: Trebuchet MS, sans-serif;">3% hexagonal prisms with 'Parry-style' orientation parameters ==> upper tangent arc and weak diagonals within the inner halo (seen on some of my photos).</span></li>
<li><span style="font-family: Trebuchet MS, sans-serif;">15% thin hexagonal plates with high angular dispersion around a horizontal axis ('Lowitz orientation parameters') ==> vertical pillars</span></li>
</ol>
<span style="font-family: Trebuchet MS, sans-serif;">Below are the results of our simulations, one in B&W showing the entire sky (white on black for clarity). The other attempts to recreate the apparent atmospheric view in colour, showing how it appears to the eye, rainbow features and all, showing that the diagonals and upper tangential arc were very faint and not readily visible:</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNopLllk7K9WRLuZYkuMdq5C7vBp6T459RBpgJm46QNky6Q7ybAggfWcLMoUwbEPmG5Rrov7QYInQnnAqB-3GaXrGMDqI2PevthJCInnEfV-LH26tBj9Vxkst2r5nRU_CfRaFFKjg01IKo/s1600/45-37-3-15B&W.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNopLllk7K9WRLuZYkuMdq5C7vBp6T459RBpgJm46QNky6Q7ybAggfWcLMoUwbEPmG5Rrov7QYInQnnAqB-3GaXrGMDqI2PevthJCInnEfV-LH26tBj9Vxkst2r5nRU_CfRaFFKjg01IKo/s1600/45-37-3-15B&W.JPG" height="196" width="200" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivLxoXYvCEN-BjcrWKTDBXLOZzYL2MwrE2-nS7BiokurPOGuBqtijLIQdoWiO4SxV80C-kOi7UJYizBQbbPypzi25Gxc8sOiQxG1achW0Mz8UlQZBj0IV6QiIVX6R53KuepmilqWVpeGit/s1600/45-37-3-15.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivLxoXYvCEN-BjcrWKTDBXLOZzYL2MwrE2-nS7BiokurPOGuBqtijLIQdoWiO4SxV80C-kOi7UJYizBQbbPypzi25Gxc8sOiQxG1achW0Mz8UlQZBj0IV6QiIVX6R53KuepmilqWVpeGit/s1600/45-37-3-15.JPG" height="152" width="200" /></a></div>
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<span style="font-family: Trebuchet MS, sans-serif;">The sun is blanked out in these simulates (it is at the centre of the inner halo) and therefore the flare of the sun on the camera lens obsucures most of the detail in the middle of this inner halo.</span></div>
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<span style="font-family: Trebuchet MS, sans-serif;">Another meteorological point is that the progression of these features throughout the afternoon indicated that populations of plates vs. prisms of ice changed proportions over time on the northwesterly breeze. Therefore settling, sorting, dispersal, tumbling, crystal growth all were very very dynamic during this afternoon. The sun pillar was more dominant towards the latter part of the evening.</span></div>
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<span style="font-family: Trebuchet MS, sans-serif;">An amazing feature of the Halosim program is that you can place any type of crystal in any colour of atmosphere with any type of sun...therefore allowing projections to be made from images from rovers on the moons of Jupiter and an assessment to be made about the crystals present in their atmospheres...sulphur...ice...or other!</span></div>
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<span style="font-family: Trebuchet MS, sans-serif;"><br /></span>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-46321868691276341452014-01-09T09:57:00.001+08:002014-01-09T09:57:15.497+08:00The Graph of Graphs<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEild6sT7LtwP-U7RO3YvYlTpn-xvG-YmZ7VTXgzCA1vA4I49fYsK_KurPQrQVChKDMs8ecq1rcLq3zNIGdaPeHn-mtOhXIJ9fIIsylCwCZrg0IEZmQIALAXOvqb85yfTjNkekPXxsxEhgMp/s1600/GRAPHS.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEild6sT7LtwP-U7RO3YvYlTpn-xvG-YmZ7VTXgzCA1vA4I49fYsK_KurPQrQVChKDMs8ecq1rcLq3zNIGdaPeHn-mtOhXIJ9fIIsylCwCZrg0IEZmQIALAXOvqb85yfTjNkekPXxsxEhgMp/s1600/GRAPHS.png" height="476" width="640" /></a></div>
<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-21095094239625341672014-01-09T09:25:00.004+08:002014-01-11T13:49:32.937+08:00All the >1 km diameter objects of the Solar System in a single image<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhe86SigBpI-L5z4Fd7fZ8XLyGcl2p16iw7PY3y50pHH5Pl2KYLuid2QfXeBIfG4d5h5XqPy-LUnE1JLjR43RxESR1lOJ0RoJ9BOhmggw5a9uUg3k7x7cw7Tm6alOKqje9D9VO0J4cgNHyI/s1600/Moons.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: "Trebuchet MS", sans-serif;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhe86SigBpI-L5z4Fd7fZ8XLyGcl2p16iw7PY3y50pHH5Pl2KYLuid2QfXeBIfG4d5h5XqPy-LUnE1JLjR43RxESR1lOJ0RoJ9BOhmggw5a9uUg3k7x7cw7Tm6alOKqje9D9VO0J4cgNHyI/s1600/Moons.JPG" height="500" width="640" /></span></a></div>
<span style="font-family: "Trebuchet MS", sans-serif;">Here I used data tables from Wikipedia of the diameter of the planets, moons from every planet, planetesimals and asteroids in relation to their orbit around either the sun or the particular planet. This way each object >1 km can be seen clearly on one graph but only if a log–log scale is used. The radius of the sun is plotted as an arbitrary bar at the top showing that it would potentially encroach into Earth's orbit if it were to become a red giant.</span><br />
<span style="font-family: "Trebuchet MS", sans-serif;"></span><br />
<span style="font-family: "Trebuchet MS", sans-serif;">Some observations from this are:</span><br />
<ul>
<li><span style="font-family: "Trebuchet MS", sans-serif;">Mars has just two very small moons orbiting and very very low altitude</span></li>
<li><span style="font-family: "Trebuchet MS", sans-serif;">Earth's Moon is very large given the size of the Earth and its position in the inner solar system</span></li>
<li><span style="font-family: "Trebuchet MS", sans-serif;">From Jupiter to Neptune there is a logarithmic decay in planet size with orbital radius implying some degree of gravitational sorting of material in the early evolution of the solar nebula</span></li>
<li><span style="font-family: Trebuchet MS;">The moons of J, S, U and N follow a strikingly similar patterning on this graph with Jupiter having the most abundant spread due to it being well surveyed and containing many objects >1 km in diameter.</span></li>
<li><span style="font-family: Trebuchet MS;">These gas giants have moons that split into an inner ring of increasing size and outer ring of decreasing size, hence all the big moons are located at roughly 1M km radius.</span></li>
<li><span style="font-family: Trebuchet MS;">Three of these moons are larger than the smallest planet, Mercury. And many of these moons are larger than the largest planetesimals and dwarf planets in the outer reaches of the solar system.</span></li>
<li><span style="font-family: "Trebuchet MS", sans-serif;">Pluto and Charon are clearly part of the dwarf planet/planetesimal cluster, hence their degradation from the planet category a decade ago.</span></li>
<li><span style="font-family: Trebuchet MS;">Scatter in the data beyond the orbit of Saturn indicates more observations are required. </span></li>
<li><span style="font-family: Trebuchet MS;">The Dwarf planets and asteroid belt show signs of interaction </span></li>
<li><span style="font-family: Trebuchet MS;">Oort Cloud and outer planetesimals show signs of interaction</span></li>
<li><span style="font-family: Trebuchet MS;">Due to its enormous surface area, the Oort Cloud probably represents a huge mass of material which is under-represented on this graph, especially considering objects <1 km in diameter.</span></li>
</ul>
Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-73895765530203327042014-01-07T09:57:00.002+08:002014-01-09T09:54:01.322+08:00Australia coverage<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgojrPFEJfrYInL-6yKlrEVk_UQQHA8qR7O_QU41X76DdExbmqWYRJkQBSqTiuKd8yF4JXzlVGp7OUDgM9L496syJFu04RC61dCxL_OEW4BnaLEhhH_WM1kmxvnQfhWnsitjPUJAXwv97mh/s1600/Capture.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgojrPFEJfrYInL-6yKlrEVk_UQQHA8qR7O_QU41X76DdExbmqWYRJkQBSqTiuKd8yF4JXzlVGp7OUDgM9L496syJFu04RC61dCxL_OEW4BnaLEhhH_WM1kmxvnQfhWnsitjPUJAXwv97mh/s1600/Capture.JPG" height="544" width="640" /></a></div>
<span style="font-family: Verdana, sans-serif;">In WA we've really got to go to the Pilbara and Kimberley! Interstate TAS, NT need a bit of attention! [Woolfe Creek, Gosse Bluff and Mt Gambier are all on the wish list.]</span>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-22410864341298421762014-01-01T11:46:00.001+08:002014-01-09T09:53:31.558+08:00Differences between N and S Hemisphere (compiled from various sources)<h3>
[text to be improved shortly]</h3>
<h3>
<span style="font-family: Verdana, sans-serif;">Astronomical</span></h3>
<span style="font-family: Verdana, sans-serif;"></span><br />
<span style="font-family: Verdana, sans-serif;"><ul>
<li>4-5 days longer winter season due to elliptical orbit aphelion coincidence with NHsummer</li>
<li>Hence, average day length is <minute longer</li>
<li>Elliptical perihelion coincidence with SH summer</li>
<li>Hence SH is 5 million kms closer to sun and receives 5% greater radiation</li>
<li>SH can see magellanic clouds each night</li>
<li>SH can see into galactic centre hence more and brighter stars with less light pollution</li>
<li>NH better for deeps space observation (no galactic pollution)</li>
<li>Can see Andromeda in NH closest neighbour galaxy</li>
<li>SH an see Alpha Centuri closest star</li>
</ul>
</span><br />
<h3>
<span style="font-family: Verdana, sans-serif;">Geological</span></h3>
<span style="font-family: Verdana, sans-serif;"></span><br />
<span style="font-family: Verdana, sans-serif;"><ul>
<li>SH Cr-Ni-PGE-Au-Fe-U deposits >> population requires</li>
<li>Oldest mineral SH</li>
<li>Oldest rock NH</li>
</ul>
</span><br />
<h3>
<span style="font-family: Verdana, sans-serif;">Geographical</span></h3>
<span style="font-family: Verdana, sans-serif;"></span><br />
<span style="font-family: Verdana, sans-serif;"><ul>
<li>greater land area (and less sea area) in the NH (and probably more forests, agriculture, lakes etc.)</li>
<li>ocean currents circle the earth at high latitudes in the SH but not in the NH</li>
<li>polar regions of the SH are colder than the polar regions in the NH</li>
<li>NH has land areas which are further from the oceans along the same line of latitude - i.e. east-west distance to the sea is greater.</li>
<li>Presence of Antarctica in SH (= highest, driest, coldest, windiest continent)</li>
<li>Antarctic ozone hole bigger</li>
<li>UV penetration greater in SH therefore more genetic mutations</li>
<li>Clockwise coriolis effect in SH</li>
</ul>
</span><br />
<h3>
<span style="font-family: Verdana, sans-serif;">Biological</span></h3>
<span style="font-family: Verdana, sans-serif;"></span><br />
<span style="font-family: Verdana, sans-serif;"><ul>
<li>SH Penguins</li>
<li>NH Polar bears</li>
<li>SH Greatest rainforest</li>
<li>SH eucalyptus</li>
<li>NH pine</li>
<li>NH More vegetation</li>
</ul>
</span><br />
<h3>
<span style="font-family: Verdana, sans-serif;">Human </span></h3>
<span style="font-family: Verdana, sans-serif;"></span><br />
<span style="font-family: Verdana, sans-serif;"><ul>
<li>NH has a greater population and this means more large cities</li>
<li>the use of energy (for heating, transport, power etc.) is greater in the NH and that means more "man-made" heat is released to the atmosphere</li>
<li>carbon dioxide emissions in the NH are greater</li>
<li>greater atmospheric pollution occurs in the NH</li>
<li>Countries which are rapidly becoming industrialised - and increasing atmospheric emissions - such as China and India are located in the NH.</li>
</ul>
</span><br />
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Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-90520045650584825992014-01-01T11:45:00.001+08:002014-02-25T12:38:51.243+08:00Music to listen to while studying different types of metamorphic rock<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiA6XqNrsP5LQRvWobQnXf2xfE3EPCB_I_X9psU7NaxgqJHg_lXaIQ1PeLS6dg52zcb1gbmTMY20o27XwRwXZEl8h4OyKLNlfx1TEtcLtdswwjDiYCHV95SvkuU38RAD6DWSgr7Qz3Ej32i/s1600/Capture.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiA6XqNrsP5LQRvWobQnXf2xfE3EPCB_I_X9psU7NaxgqJHg_lXaIQ1PeLS6dg52zcb1gbmTMY20o27XwRwXZEl8h4OyKLNlfx1TEtcLtdswwjDiYCHV95SvkuU38RAD6DWSgr7Qz3Ej32i/s1600/Capture.JPG" height="363" width="400" /></a></div>
<br />Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-3295835776243373275.post-48145554024695101592014-01-01T11:38:00.001+08:002014-01-09T09:53:31.561+08:00New year resolutions 20141. Less carb<br />
2. More yoga<br />
3. Be creative about cooking<br />
4. Be creative about feng shui and orderliness<br />
5. Be creative about travel/commuting<br />
6. Be creative about entertainment<br />
7. Increase the art and music<br />
8. Philosophise a lot,<br />
9. Think about big history thresholds (see Big History Project)Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-57368548840807725392014-01-01T11:26:00.002+08:002014-01-09T09:53:31.564+08:00A list of discoveries from the last whileDiscovery 1: The answer to a given question is undoubtedly somewhere in between all the extremes. This is self evident since extreme points of view or 'yes and no' answers summarise the knowledge of the universe that is present in the minds of humans. Therefore, if we are able to summarise available knowledge and perspectives and take it all into account (a difficult thing to do as an individual), we will end up with the most wholesome answer...the closest thing possible to a universal truth from a human perspective at least. This is also a way to avoid ignorance and to be inclusive.<br />
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Discovery 2: Be creative about all things. The big and the small are both extremely important since big and complex things (such as high-level research) emerge from the simplest of experiences. For example: orderliness around a home (such as washing the dishes or arranging the garden) has huge effects on our mode of life and way of being. Patience and enjoyment of 'menial' tasks means that we can never be bored and can never have the feeling of meaninglessness in our lives.</div>
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Discovery 3: The mind can make trillions of connections that are as expansive as the universe. Therefore, in this, there is endless possibility. Don't accept limitation.</div>
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Discovery 4: In every difficulty lies opportunity. (This is evident from number 3 since difficulty presents us with real problems and demands creative solutions).<br />
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Discovery 5: Sharing ideas just has to be a good thing! I can't accept the idea that keeping discoveries and ideas to ourselves (this is rife in the academic world) serves any great purpose.</div>
Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-3295835776243373275.post-56877379643495717222013-12-29T16:57:00.003+08:002014-01-09T09:52:56.381+08:002013 SummaryThe year started by congregating back in Tuart Hill and Suz and Brendan left back home after some extreme Barina driving and bird watching on the south coast. We then took up Fawna's idea and had an Ivanic art-show day which was quite well attended (mainly by geologists) on a lovely January day with a few sales. The first (and hopefully not last) time the house became a gallery. Then it was farewell to the folks at the end of Jan on the same day pretty much that we upgraded our little cars to one big one: Carl, our 4x4.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEioeV8a-uSrWhSHCpiL2ZgIJQYEH8W25H4C3zSkeY7yrMewwtGlRCmuZJrGATsBI-FdBu15LO0x8oKU20xv_W6YNuntQ1l82WO4XvjvgbY1CpYiJ2aMNfL71NAjuRBgTizF7sFA47Pize7C/s1600/P1060122.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEioeV8a-uSrWhSHCpiL2ZgIJQYEH8W25H4C3zSkeY7yrMewwtGlRCmuZJrGATsBI-FdBu15LO0x8oKU20xv_W6YNuntQ1l82WO4XvjvgbY1CpYiJ2aMNfL71NAjuRBgTizF7sFA47Pize7C/s1600/P1060122.JPG" height="112" width="200" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNjRxZGhAvHNfOoJKjHMa_14-cTVufbCA3_ik9BXiZFTj0prdydfOw_ImZbNk6MKttlmNPorCac_Dp4KpWEErLVcSLuzt8WRX2s7GLVlhLuD0QPriaEQizCS96_w7o37Xy2v5aBuLyx-2D/s1600/DSC_0333.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNjRxZGhAvHNfOoJKjHMa_14-cTVufbCA3_ik9BXiZFTj0prdydfOw_ImZbNk6MKttlmNPorCac_Dp4KpWEErLVcSLuzt8WRX2s7GLVlhLuD0QPriaEQizCS96_w7o37Xy2v5aBuLyx-2D/s1600/DSC_0333.JPG" height="112" width="200" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJet6HBySl-Tcnb1MGN7L3UawQb3UKanhyphenhyphenV_uoGFcd2BIdeBLUCkVPTSqY09F5CX30gKDHe-1XY_0RrGL-GKi17e6wIKxaGxtXeuMuE5Qb8l7abQe-eGYOm34cgFzdxMSfY1yPvdVEL-Cb/s1600/19.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJet6HBySl-Tcnb1MGN7L3UawQb3UKanhyphenhyphenV_uoGFcd2BIdeBLUCkVPTSqY09F5CX30gKDHe-1XY_0RrGL-GKi17e6wIKxaGxtXeuMuE5Qb8l7abQe-eGYOm34cgFzdxMSfY1yPvdVEL-Cb/s1600/19.jpg" height="133" width="200" /></a>It was not long until our much anticipated Hawaii trip in March which was so extremely diverse and full of new things for us. Active lava, giant telescopes on top of the highest mountain in the Pacific (courtesy of Nick's hospitality). Rainforests, canyons, coral reef, turtles, dolphins, it really had it all. On our last couple of days on Kaua'i we were then married on the beach, just us with an officiant and a photographer present. At the moment of the Hawaiian chant there was an uprising in the ocean and the crashing waves seemed to salute us. A very special time.</div>
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Hardly were we back and we were both into the field for the start of quite a long field season. May was in Yalgoo for me with the Chinese geologists once more. It was relatively routine but the area was new and interesting. Not so snaky as last year for Fawna but a flood did cause some surprise as a foot of water rushed through camp sweeping some of the party's shoes and lunchboxes away.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjQh3TfnL3GEkRC7chzjppvHn5WWHXrBZanxxLYvPzkJy1Bf-1IvRG9Oc1ymJLZJa2UUGhSdEzH-l_uF5TM_FZ4UXdCpMCFjfj7cj62h71TqLMkRXocz4fcMj-IEtsPs1thr-_jpVhx0xh5/s1600/DSCF1580.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjQh3TfnL3GEkRC7chzjppvHn5WWHXrBZanxxLYvPzkJy1Bf-1IvRG9Oc1ymJLZJa2UUGhSdEzH-l_uF5TM_FZ4UXdCpMCFjfj7cj62h71TqLMkRXocz4fcMj-IEtsPs1thr-_jpVhx0xh5/s1600/DSCF1580.JPG" height="150" width="200" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJ_WZ1KaaiVsSK1Q1Xi69UtnmVdDF6vCGH3RP6jOzEgGIJeh3kkfRVcyBq5hAna-TWcnLpgU0n45o5f3hP9JqS4VWTpLHFd7rm5DLOWdbuNXdp-lqWfT7gtftt4P2DZZ59Re4kA5Mmqrh4/s1600/DSCN0343.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJ_WZ1KaaiVsSK1Q1Xi69UtnmVdDF6vCGH3RP6jOzEgGIJeh3kkfRVcyBq5hAna-TWcnLpgU0n45o5f3hP9JqS4VWTpLHFd7rm5DLOWdbuNXdp-lqWfT7gtftt4P2DZZ59Re4kA5Mmqrh4/s1600/DSCN0343.JPG" height="112" width="200" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIBB3GgSf1DrrkSxreAClLXnwWXz1hpF6G072Pi-kVL549y78D4i3UN-gQFCRbtzqa7RJxi828QfyCGjgtwLTUaUNLTgrp3B18bn4Q8QTB7FRf6XZAWU78D0NvkmZ66-niBPM9ClN5jhyphenhyphenk/s1600/P6240264.JPG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIBB3GgSf1DrrkSxreAClLXnwWXz1hpF6G072Pi-kVL549y78D4i3UN-gQFCRbtzqa7RJxi828QfyCGjgtwLTUaUNLTgrp3B18bn4Q8QTB7FRf6XZAWU78D0NvkmZ66-niBPM9ClN5jhyphenhyphenk/s1600/P6240264.JPG" height="150" width="200" /></a>A wet winter for WA...we did manage to get a Minnesota trip in though in June in time for Fawna's grandparents' burial ceremony and life celebration for a day or two at the cabin. The time at the cabin turned out to be a musical get-together with the advent of the drum-didgeridoo combo and Kim's Journey dance celebration. The trip also involved picking up Fawna's old boxes of stuff from Pittsburgh where we had a great salad and french fries speciality dish with Pam. [I managed to move the window so the air con unit went tumbling onto the roof but Pam handled this news very well]. We had a few good catchups with friends and cousins too, including a swing-by to a fresh and cobalt-skied Chicago on the way back to MN. We didn't stop in Ohio since there is nothing there, nor Wisconsin as it was only inhabited by cheeseheads. Thanks to Deb for housing us in St Paul where fine foods were had and sketchy banjo was played.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjglsdnW6anc6bK0N0yZ5zfRF82PTtcJpEd2wrLKGLdyUHoj0rgqmMcI8gqhUO9CEDIu0eg-2H3hC2qBR6kogKttaNELBHdBHMTdDZ4YdMA6w3rc8QlVjnv8s3pUpFkphwQ4brPKVaCaJjR/s1600/WP_20131018_17_43_52_Pro.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjglsdnW6anc6bK0N0yZ5zfRF82PTtcJpEd2wrLKGLdyUHoj0rgqmMcI8gqhUO9CEDIu0eg-2H3hC2qBR6kogKttaNELBHdBHMTdDZ4YdMA6w3rc8QlVjnv8s3pUpFkphwQ4brPKVaCaJjR/s1600/WP_20131018_17_43_52_Pro.jpg" height="112" width="200" /></a>A long way home and straight back into the field again, this time wet and very different for me. Fabulous to see the bush getting rain with some great scenery, some of the best. Then we both went out a third time, myself to the amazing Golden Grove mine with fab minerals...strange having to work from the mine village again, very cushy with beer and darts most nights it turned out. Weather starting to heat up to about 37C here and there in October. Chris Yak stayed for a couple of weeks, which was a nice time that included some progressive music creation and a great day trip or two around Perth.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgLQL7mp80Yn7laPeUJ7RQ22lMu-CBWoZ7G9zHeEEIYuzCrLFux9kgoIBEwKL32Cu_roHSD2UH_AwrhE-Prxwef4Ie-bMmxzo134ZPoTSzamyBx3eAWHMHoZUXsGsh0-FBJF8QJ9VH8cnN1/s1600/WP_20131206_17_06_33_Pro.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgLQL7mp80Yn7laPeUJ7RQ22lMu-CBWoZ7G9zHeEEIYuzCrLFux9kgoIBEwKL32Cu_roHSD2UH_AwrhE-Prxwef4Ie-bMmxzo134ZPoTSzamyBx3eAWHMHoZUXsGsh0-FBJF8QJ9VH8cnN1/s1600/WP_20131206_17_06_33_Pro.jpg" height="112" width="200" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9KKsc7zX1XhyrgPcLpFMnXyfKQQz6J-ZEaNcEUSPu3k7YMCfzvRZ0z6E9BAVZuPWBSCQYkxbyZO78zZ5NbUysdZ_yuTEJNgr8GDGZH2oonFhsi4i7VM4YHdXknXPc4j-V98gdVY0bcSU_/s1600/WP_20131124_10_12_20_Pro.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9KKsc7zX1XhyrgPcLpFMnXyfKQQz6J-ZEaNcEUSPu3k7YMCfzvRZ0z6E9BAVZuPWBSCQYkxbyZO78zZ5NbUysdZ_yuTEJNgr8GDGZH2oonFhsi4i7VM4YHdXknXPc4j-V98gdVY0bcSU_/s1600/WP_20131124_10_12_20_Pro.jpg" height="112" width="200" /></a>November another trip up north, this time pushing 40C, though a useful trip, sharing our info with lots of keen folks from academia and industry and I got to show them round some of my old stomping grounds. Also in November, we continued the Tuart Hill Thanksgiving tradition, which was a great day with another huge turkey. A final trip away in early Dec was for me to get my volcanology training in the world class course over east on the coast on the border between NSW and VIC. A truly inspiring trip with good guides and lots learned, not to mention fab scenery...a place to dwell at when we eventually get around to driving round this country! <br />
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The final month was a big one for the house too. Fawna is now strummin' a little mandolin which suits her just fine. It has helped me get back into violin also: the exercise book actually helps out since the violin has the same string tunings! So now we're drumming and strumming and didging here and there when we are stationary. The house has also gained a decent air con unit allowing light from where the old one blocked the window. Finally an overdue new oven should be with us in early 2014, looking forward to getting into the home baking a lot more next year. Creme caramel and creme brulees have already been a success in this new episode! </div>
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Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-31480028858584861622013-07-16T08:24:00.000+08:002014-01-09T09:57:15.494+08:00Reading: Mountains of the Mind - a thought dumpHaving just finished the brilliant "Captain James Cook: A Biography" by Richard Hough, I am now most of the way through "Mountains of the Mind" by Robert MacFarlane. This combination has been immensely inspiring and enriching to me as a geologist, artist, antipodean dweller...in no particular order.<br />
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Cook sailed the seven seas on amazing voyages and saw things that no others had seen. Completion of the task of charting the coastlines of all the continents (except Antarctica but he was close and circumnavigated it for the first time). The first nourished global perspective if you like having gotten close to completing the map of the earth. As adaptable as our minds may be, it is this planetary situation that shapes us the most and its manifestations are nearly all that we interact with. This is something so funamental that we are obliged (perhaps) to have it reflected in it our own nature.<br />
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Then comes the Mountains of the Mind...a fantastic progression through the chapters is certainly to a geologist's liking. Cook managed the 2.5D conception and charting of the coastlines in the late 1700s. In the 1800s mountaineering and mapping gave us the third dimension as altitudes and contours were established in large swaths of the globe. During this century Hutton and Darwin gave us conception of great geological and evolutionary time, the until-then missing dimension. <br />
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The 1900s provided refinement of all these dimensions with advancement of the microscope, the telescope, radioactive dating, plate tectonics. The documantation of the full dimensionality of our landscapes is something like complete to a particular resolution with fine-scale details and active change being areas in need of constant attention. The Mountains of the Mind really takes the funtamentals of this 3-century-history and examines the way that this interaction between man and planet is ultimately the mirror for our own mind....the circumstance of our existence...the context for life...the interactions of the human condition with the physical. How can we communicate these conceptions about the land? Do we all have a non-verbalized (possibly subconscious) understanding of this that is deeply engrained?<br />
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The valleys and oceans of our thoughts can be tested, challenged, sculpted and crystallized against views into the magnificence of it all. Our knowledge of the earth is the fabulous backdrop to the further worlds of the imagination and provide all our metaphors for understanding. I am reminded of this connection very clearly in the words of many passages from Thus Spoke Zarathustra, talking of our feelings of being 'human...all too human' as we place ourselves in context on top of a mountain!<br />
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The Mountains of the Mind takes us on a journey through the history of mountaineering. From the evolution of thought from fear to awe to obligatory exploration. From the early conceptions of geological processes to great time. Ideas on ice(!). Human spirit, collaboration. Achieving undoubtedly great things. For me this was a great summary of how it is possibly to put the world together in ones mind independendly of education and socialization. I probably got a taste for this aged 9 on top of peaks of the lake district. It was the the longest day of the year and Dad took me up there to overnight on the cold craggy mountaintops where we huddled in rocky gully watching the sun rise through dramatic peaks at about 4am. Leaping forward to the present I'm still viewing things the same way.Unknownnoreply@blogger.comtag:blogger.com,1999:blog-3295835776243373275.post-8966551256095259752013-07-15T14:41:00.003+08:002014-01-09T09:54:40.869+08:00The drums....the drums....the drumsSometime recently, it has occurred to me that it is easy to steer clear of definitive connection with rhythm in our lives. So the aim was to take up drumming in some form. [An aside: Shortly after this realisation, we spontaneously got into the didgeridoo...another instrument that is extremely simple at it is an <em>aerophone</em> i.e. an instrument which only vibrates air in an uncontained vessel, in this case with the lips alone. See our post on making a dideridoo out of PVC pipe]. Now we have a djembe drum, which is one of the most basic (and hence, essential in our scheme of things) musical instruments. This is technically a <em>membranophone</em>. <em>Chordophones </em>are encompassed by the acoustic guitar and <em>idiophones</em>, the fourth of four major musical instrument classes is to be simulated in our second instrument...the Octapad.<br />
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The Octapad has been around for 30 years with very similar design, constantly being upgraded with the latest technology (it is something that has been in constant demand in the music industry). It is simply eight rubber square pads with a series of controls. These are hit with drumsticks and can be assigned almost any sound, but with a focus on timpani and a variety of world drum arrays. We can record several drum patterns in a phrase and repeat and overlay in order to djembe, strum a guitar or wobble a didge along to...kind of a drum machine with a human touch and a fabulous way to get self-created rhythms into the living room. <br />
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Each of these instruments can be played alone but they each work well with each other allowing for many sound permutations. <br />
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We then set out to learn about didging (see the other page) and djembe-ing and also in general about drum patterning. The most instructive of these were the djembe patterns, which really geled all our ideas and instruments together in some fantastic heart-beat-type rhythms. The notation is, for example: | B - T B | T T - - | which translates as 2 x 4/4 bars of Bassnote, muted, Tap, Bass etc which can become very tonally rich on the djembe with practice. We are currently practicing some of these basics and looking at the diversity of phrases.<br />
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The challenge now, while driving around the bush, will be to find a good naturally termite-hollowed branch for an authentic didge and also another Aboriginal <em>aerophone</em>: the bullroarer, which is a short piece of wood tied to a rope which whirs as it is spun around your head!<br />
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<br />Unknownnoreply@blogger.comtag:blogger.com,1999:blog-3295835776243373275.post-53449904384014585832013-07-13T11:32:00.000+08:002014-01-09T09:54:40.865+08:00Music mayhem...advice on sorting out music, genre classification, making a collection useful!<span style="font-family: Verdana, sans-serif; font-size: x-small;">Classification of music into genres is very interesting and potentially very useful, the problem is that the files you obtain when downloading MP3s or ripping a CD into MP3s come with auto-assigned genres, artists etc. My aim was to find a system which enabled me to reclassify files quickly and apply a series of tagging options that allowed quick retrieval of usable lists of songs for the purpose of generating decent playlists. See below a list of steps you can follow and below this a couple of finer points I have learned.</span><br />
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<span style="font-family: Verdana, sans-serif; font-size: x-small;">I have finally come up with a solution that requires Winamp (version 5.6 or higher) and a file converter of some kind e.g. Tuneconvert. The converter allows you to convert all your music files from wma, m4a, wav etc. into mp3. Winamp requires this for the storage of ratings...a very important feature as most ratings disappear when you use the files on a different device, i.e. they need to be stored.</span><br />
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<span style="font-family: Verdana, sans-serif; font-size: x-small;">The reason for choosing Winamp is that it has a very intuitive and information-rich and adaptable graphical user interface. Here you can display a list of genres next to a list of artists next to a list of albums, clicking on each to filter your search results down to the required list. From this list you can rate (storing rating to file if checkbox is ticked in the options) and retag the files and drag them into a playlists. It is also possible to 'autotag' a list of files and 'calculate replay gain' which allows the program (once the checkbox is ticked in the options) to playback at a volume that doesn't need constant adjustment.</span><br />
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<span style="font-family: Verdana, sans-serif; font-size: x-small;">Once you have tagged your files it is then possible to 'massage' your collection down to a manageable list of genres, artists and albums with ratings stored in each file...see 18 steps below. From this position playlists flow naturally e.g. by clicking a particular genre and sorting by rating, simply select and drag the highly rated songs into a new playlist and then hit randomize. Unfortunately the playlist is stored with a specific path, so it is then necessary to save the playlist as an m3u file in a fixed directory (e.g. 'playlists' in your music directory). Then open the file in something like Wordpad and replace 'X:\Music' with '..' which changes the directory from playlists into the root directory of all your music...this is then usable on other devices.</span><br />
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<span style="font-family: Verdana, sans-serif; font-size: x-small;">Here is a quick example of how to deal with say 1000 music files which haven't been 'tended to' before (it is best not to do more than 1000 files at a time as this process will take a very long time! If need be, separate your directories into Artists A-B, C-D etc to create subfolders of manageable size):</span><br />
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<span style="font-family: Verdana, sans-serif; font-size: x-small;">1. Get all your files into a 'music directory'.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">2. Setup your file converter to spit out mp3s into the source directory.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">3. Search out all the m4a, wma, wav, etc. files and dump them into the converter.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">4. Search out all the m4a, wma, wav, etc. files and delete them (you have mp3s of these now, so no worries).</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">5. Download and run Winamp 5.6 or greater.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">6. Add media to library from your folder of mp3s.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">7. Select all and right-click and 'send to autotag'. Apply all except for ones in the 'unsure' category, which you can check individually.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">8. Select all and right-click and 'send to calculate replay gain' (make sure the option is checked which automatically writes replay gain results to files).</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">9. Clear the Winamp Library (WL) and add the media again to load in all the new tags and results.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">10. Set up WL to show 3 columns beside each other genre-artist-album.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">11. Observe the list of genres and try to keep to a manageable number, say 50, reclassify particular artists if required and assign genres to 'no genre' entries. ***see MORE ON GENRES.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">12. Observe list of artists. This can be long, although for classical music it is nice to have the 'composer' listed as artist rather than many orchestras...it depends how well you want to distinguish different performances of the same piece. Also decide if you want to merge 'featuring additional artists' into the principal artist to make this list more usable. Try to re-tag 'Various Artists', 'VA', '(no artist)', 'unknown', 'unknown artist' etc.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">13. Observe the list of albums. These items are not functional unless they have three or more songs contained. Try to create some artificial 'compilation' albums to house the dangling entries...possibly using genre as a guide. All variants of 'Best Of', 'Symphonies', 'Piano Concertos', 'Greatest Hits', 'Live', 'Acoustic', 'Remixes', etc. can be merged as the artist is known independently of this. Also consider merging 'Disc 1,2,3' albums into one (search for 'disc' and then sort by album name to see which these are).</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">14. Steps 11-13 are an iterative process and you may want to revert some of the re-tagging as you go (just send those particular files to 'auto-tag' again).</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">15. Rating: if you know a few genres, artists or albums that you are really keen on then right-click and rate....say at 2/5 stars. This makes these songs become automatically prominent in your playlist generation later. There is then the lengthy process of rating your songs which is easier, the better you know the titles of all your music files since you don't have to play them to find out if you like them or not! You need to check the option to store rating in file, otherwise these will be lost if you move the files.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">16. Generate your own playlists by finding genres or a collection of artists (ctrl+click to pick out particular artists) then sorting by rating. Follow the Wordpad procedure above to make this playlist universal on other devices.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">17. Find some of your favorite songs (sort all by rating) and then select them (using ctrl+click) then click 'generate playlist' at bottom of WL and a playlist will be generated online based on the characteristics of these songs.</span><br />
<span style="font-family: Verdana, sans-serif; font-size: x-small;">18. Randomized playlists should play well as they are all highly rated and related and also playing back at a consistent volume level. About 25 great playlists of 100 songs each should keep you going a long time. More than this and you get back into the issues you just resolved in the WL of too many items to deal with!</span><br />
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<span style="font-family: Verdana, sans-serif; font-size: x-small;">***Genre Issues: I have found these difficult to grasp BUT worthwhile. If you want to utilize these as a filtering tool then it is always going to be a kind of personal battle to find what works for you. It is also dependent on the particular flavor of your music collection. E.g. if it is classical music biased then you may have sufficient songs to make it worth separating out artists (i.e. composers) from different periods: Baroque/Classical Era/Romantic Era/20th C-Contemporary Era. Or if you have a particular wish to occasionally play one of these genres then you may create them even with as few as 20 songs. Less than this and genre loses value as they might as well be an album. If you are laden with one of these genres, then it is worth separating further e.g. choose artists/albums from particular time periods like Classical Era Early/Mid/Late. Or Rock ==> Alternative Rock, Blues Rock, Hard, Soft, Folk, Funk, Grunge, Goth, Glam ad infinitum. For 1000 songs about 30 genres with 30 songs in each would probably be the most functional.</span><br />
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<span style="font-family: Verdana, sans-serif; font-size: x-small;">On functionality: elimination of 'no genre', ridiculous genres like 'general pop', 'various artists', 'no album' means you can actually select music you want to listen to in many ways. A third might be unrated, a third with 1-2 stars based on album/artist and then rest would be the highlights of the collection individually selected 3-5 stars.</span><br />
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<span style="font-family: Verdana, sans-serif; font-size: x-small;">On duplicates: I have found that it is worth getting rid of duplicate songs since playlists generated in this way will tend to yield repetitions. Sort all music by title and scroll down. When you see two artists next to each other in the list, then it is likely that this song is a duplicate especially if it has the same play time within a second or so.</span><br />
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<span style="font-family: Verdana, sans-serif; font-size: x-small;">On Soundtracks: I am a fan of these. As a result I have chosen to disregard individual song genre and create large 'soundtrack' and 'TV soundtrack' genre listings. This allows easy access to a useful and easily searchable album list. So, as long as the tracks are sorted by track number, good playlist progressions are generated and in this case the ratings are ignored.</span><br />
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<span style="font-family: Verdana; font-size: x-small;">Good luck if you choose to venture down this path!</span>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-3295835776243373275.post-47062215460296231772013-07-13T09:55:00.000+08:002014-01-09T09:54:40.859+08:00How to make a didgeridoo out of PVC pipe...20 easy steps to success.This whole process of 20 easy steps takes about 2 hours once you shop for some basics. You'll need: 150 cm of PVC pipe, a pipe connector, 100 g beeswax, a cleaned tin can, a pot of close to boiling water, hack-saw, wood file, measuring tape, halved plastic bottle (clean). Optional extras: permanent marker pens, spray paint primer, spray paint, beeswax lip balm, guitar for tuning, Youtube videos on extra 'wobble' and breathing techniques.<br />
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1. Saw a piece of 3-4 cm wide PVC drain-piping down to approximately 120 cm length (eventually it will be 117 cm = D or 104 cm = E tone). File off any shavings of plastic produced.<br />
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2. Use a pipe connector for a mouthpiece (this way it can be placed on another pipe of different length for different notes and sounds without the need to create another mouthpiece.<br />
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3. Place about 2 golf balls-worth of beeswax and into a cleaned and dried tin can.<br />
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4. Place can into pan of water close to boiling point (can is to protect pan from the wax).<br />
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5. Take off the heat and take can out of water onto a bench.<br />
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6. Take the connector and dip into about 1 cm of the beeswax at the base of the can (you may need to use a pair of pliers to hold the connector low enough). <br />
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7. Keep dipping and extracting, allowing layers to cool for a few seconds onto the connector until the beeswax hardens. Reheat the beeswax (I needed to do this 3 times) and continue...it takes about 40 dips!<br />
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8. Once a 1 cm thick layer has been deposited and it is still warm start to mould the wax so that there is an even surface (i.e. get rid of the ridges and valleys and drips on the surface by pressing them away).<br />
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9. The hole should be about 3 cm wide and taper in then out to join the plastic on the inside. <br />
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10. Use an old plastic bottle cut in half with hot-enough-to-only-just-dip-your-finger-in water to dip the mouthpiece in to resoften the beeswax to continue moulding.<br />
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11. Mould the inside of the beeswax so that it is slightly oval-shaped (about 3.5 cm wide x 2.5 cm tall to fit the mouth).<br />
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12. Push the narrow part of the oval (i.e. the top and bottom) in towards the plastic about 0.5 cm (to fit the teeth/gums).<br />
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13. Pinch the sides of the oval so that they make side guards to your mouth for a good seal.<br />
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14. When finished, rest in cold water for a minute so that it hardens. Then test out connected to the main tube and reshape if required.<br />
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15. Cut the total length of the didge down to tune to an E or D. Higher pitch than an F starts to be tricky to play.<br />
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16. Decorate the pipe (not the mouthpiece!) with spray paint (a primer layer may be required) and permanent markers making sure that these dry properly. <br />
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17. To detach a firmly fixed mouthpiece you may need to try to bend the connection a little so that it clicks and loosens in order to take it off.<br />
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18. If you're struggling to get a good sound, try to make sure you have good seal with your mouth against the beeswax and then just 'blow raspberry'. Beeswax lipbalm applied to your lips and/or the mouthpiece can also help with the seal. If still no joy, then play a D/E note (e.g. bottom string on guitar) and encourage your raspberry down to that note.<br />
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19. You actually end up breathing out quite slowly and can sustain about 20s of sound in one breath. Play around with your 'wobble' and introduce some of your voice/throaty-gargling for effects...diaphragm pulsing is good for playing with drums.<br />
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20. Circular breathing is the next challenge for me. I am also looking out for a termite-hollowed branch out in the Aussie bushland to try for an authentic material didge if possible.Unknownnoreply@blogger.comtag:blogger.com,1999:blog-3295835776243373275.post-2196926706620852572013-01-03T15:17:00.002+08:002014-01-09T09:52:56.378+08:002012 Summary2012 has been a fabulous year for us! We got engaged, Fawna got a new job at the same place as me at the Geological Survey and got her permanent residency visa, we had some great trips including China and the Great Barrier Reef, we improved our surfing, my family came to visit for Christmas....and more.<br />
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The year started with a big move for Fawna from the uncertainties of academia to the government. She will be researching and mapping Western Australia in quite a location now, north of Shark Bay and south of the Pilbara region in the 'Gascoyne Province' on the Tropic of Capricorn.<br />
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I have had a non-standard year at work too with the hosting of the first batch of Chinese visitors while mapping in April, several seismic workshops (an exciting dataset in his mapping area), and the China trip. Mid year, after Fawna's first snaky and spidery field trip, she had to rush to submit her application for permanent residency before we both went to China in September for nearly 2 months (a close call). On our return we had the great news that the visa had been granted, so we don't have to leave now!<br />
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China was 'interesting'...'different'...difficult at times, but a very rewarding experience. We were able to see how an organisation with similar challenges to ours does their job in a very different way. We also were taken to see the Terracotta Warriers in Xi 'An, the ancient capital of China and the start of the silk road. The Mogao Grottos were also an amazing tourist site showcasing 1000 years of (sometimes overlapping) Buddhist artworks.<br />
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After a few weeks rest, Mum and Dad arrived and nestled into our place in Perth and we could really show them what our life together was like. Fawna and I then went off to watch the total solar eclipse in Port Douglas (tropical Queensland), which just so happened to have amazing snorkeling, sailing, crocodiles and rainforest to entertain as well. As the skies darkened in the morning looking east from the beach over the Pacific ocean we prepared for a wonderful event. Even though the clouds were taunting us, we got some amazing views of the whole passage of the transition. As the diamond ring appeared (as part of the sun is still showing through, but with the corona visible) I proposed and we became engaged before the light returned. We felt strongly that our paths are now aligned as if guided by this solar conjunction.<br />
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We celebrated over a thanksgiving feast with our friends Stu and Jo and Mark, Julie and their son Lewis. it was a great turkey banquet with pumpkin pie and a bit of Margaret River sparkling too.<br />
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Mum and Dad then went to Esperance for the rest of December and we concluded our work tasks for the year. A restocking was required, so we went on a surfing and wine-tasting trip to Margaret River with Mark, Julie and Lewis and actually found some fabulous waves to ride...we are in training for 2013 when we are looking forward to the Hawaiian version of waves if we can handle it.<br />
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Then, thankfully, Suz and Brendan could make it over and they arrived to a fabulous cobalt-skied, classically Perth day and swung in the hammock to get over their jet lag. We met, the six of us, in Esperance for five days of wonder at the fantastic scenery and beaches. Lovely food and a surf and turf barbecue on Christmas Day to seal it off. We spent the morning and afternoon at Cape Le Grand with the best beaches in Australia, the whitest sand and unbelievable turquoise beaches. In the lagoons there were rock parrots and king fishers to Brendan's delight.<br />
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As for paintings, I painted a few memorable scenes from Antarctica the year before and also a few Western Australian scenes.Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-66928523953086258142012-02-13T09:08:00.000+08:002014-01-09T09:55:13.414+08:00Tim's Art Blog (2) - recent sketchesI've been trying to sketch yoga poses. I found the easiest way was to use the tablet computer to sketch each pose very quickly (thanks Fawna) and then photograph each pose to add detail later. It turned out that I could layer each sketch and scale them relative to each other on the tablet software, so I created this:<br />
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<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-3295835776243373275.post-48832089912164914542012-01-22T11:46:00.000+08:002014-01-09T09:54:40.862+08:00The 2012 Eclipse (1)<span style="font-family: 'Trebuchet MS', sans-serif; font-size: x-small;">We have been reading the book 'Totality' about every aspect of eclipses. It is an amazing read, there is so much to know. For example, the beading of light that occurs just before totality is due to light from the sun being let through valleys of the uneven, cratered surface of the moon. The longest possible eclipse can last for 7.5 mins when viewed directly overhead. </span><br />
<span style="font-family: 'Trebuchet MS', sans-serif; font-size: x-small;"><br /></span><br />
<span style="font-family: 'Trebuchet MS', sans-serif; font-size: x-small;">We are planning to go to Cairns to see Australia's only total eclipse for around 20 years. The environment of tropical Queensland should be a great setting to observe the erratic behavior of animal life around us as the sun dims shortly after sunrise. The path of this eclipse starts to the west and travels over Cairns. The majority of the path is over the Pacific ocean, visible to very few people, finishing close to sunset over Chile.</span><br />
<span style="font-family: 'Trebuchet MS', sans-serif; font-size: x-small;"><br /></span><br />
<span style="font-family: 'Trebuchet MS', sans-serif; font-size: x-small;">The Ivanic family viewed the 1999 eclipse in Austria on the drive home after visiting family in Slovakia. This was very 'experiential' and dramatic. We witnessed flocking birds, darkening to a starry sky. As we </span><span style="font-family: 'Trebuchet MS', sans-serif; font-size: x-small;">were lucky not to have clouds, we saw a beautiful warping corona and it lasted long enough to get the panicked feeling that the sun might not return. The cloudy sky of cumulus clouds had its convection subdued by the half-sun, and that 'burned' a streak along the eclipse path across central Europe. Who knows what weather we will get for Nov 14th in Cairns. We will certainly try to get some good photos if we can see it, and if not there will be tales to tell of puzzled Koalas I'm sure.</span>Unknownnoreply@blogger.com0