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Displaying items by tag: Antarctic
Tuesday, 25 December 2007 00:58
Norway-US Traverse: Christmas Celebration
Written 24 Dec 2007
3668 meters above sea level
Maximum & Minimum temperatures: - 30 to - 36 °C
We have been standing still today to celebrate Christmas, which we celebrated in a traditional Norwegian way with rice porridge for lunch and pork (“ribbe”) for dinner. And of course some linie aquavit. Kjetil and Einar have also replaced another differential (#5) that broke on 23rd December. Preparations for Christmas went on all day and we had a very nice traditional Norwegian dinner in the evening. Surprisingly many gifts had found their way to the deep south.
- Jan-Gunnar
P...
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Monday, 24 December 2007 00:43
Means of navigation have changed dramatically
Written 23 Dec 2007
3668 meters above sea level
Maximum & Minimum temperatures: - 31 to - 38 °C
An antenna on the roof of each of our vehicles continuously receives signals from several of the twenty-odd satellites of the Global Positioning System (GPS). The time-coded radio signals from the satellites allow for very accurate distance measurements relative to the known positions of the satellites, and thus the position of the vehicles can be calculated instantly with an accuracy of a few meters. A screen shows the driver the bearing and exact distance to the point of destination. Aided by this tool, we can head for a chosen point ahead, perhaps a previous observation site marked by a single aluminum pole, and hit it spot on even after hundreds of kilometers' ...
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Wednesday, 26 December 2007 23:26
How deep is 'deep'?
Wednesday 26th December 2007
By Margot Foster
The weather pattern changed overnight and the captain hove to at 0300 in the face of gale force winds gusting to 50 knots with snowstorms and sleet limiting visibility. The swell rose to 6metres. We woke up to the news that operations have been postponed and all decks closed until it’s safe to work…which may take 12 hours.
There’s some time off for those on day shift. Musicians gather in the bar, which is the most stable part of the ship, for a jam.
Four of us met there later in the day for a yoga session, our mats placed to follow the rolling of the ship, and the focus on sitting positions.
I spent time on the bridge watching the ice crystals begin to form mounds...
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Tuesday, 25 December 2007 23:24
CAML: Christmas cheer
Written Tuesday 25th December
A lookout from the bridge is always rewarding. I watched Adelie penguins swimming sportily in circles, popping up and diving down then popping up somewhere else in a dead calm, silver sea. Then a pair of minke whales appeared and I watched their elegant curving and spouting until they passed the ship.
The sun does not set and it’s very beautiful moving in and out of the polynyas and pack ice with the soft white curve of the continent sometimes sighted.
The trawls have all been down now – the benthic sled, the French Beam, the AAD Beam trawl and the box core. Each one is specialised. The AAD Beam trawl has an under water digital stills camera attached. A crowd gathered around the computer when the images came up....
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Monday, 24 December 2007 23:21
Booty from the bathyl plains
Written Monday 24th December
These are early days in the trawl program and these first stations are taking some time as the equipment is tested and the process fine-tuned.
Martin reports “Each haul of the sleds and trawls is bringing up new and interesting material, a highlight this morning being the first Antarctic record for a particular group of molluscs. Yesterday the first run of the GA underwater video camera allowed us to see what the sea-bed we are sampling actually looks like.”
Rob Beaman has pictures of the sea-bed. He flicks through his computer screens to show images from the side-scanner which returned this morning with images taken beneath the ship representing a sweep of half a kilometre. He explains with relish the marvel of...
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Friday, 21 December 2007 22:42
Christmas Day on the Aurora Australis
Written Friday 21st December
‘Happy Christmas’… ‘Merry Christmas’ echoes along the corridors. To mark the day breakfast is 0830 rather than 7.30 and there will be a long lunch.
We are at -62 48, 142 51 for our Antarctic Christmas. It’s freezing outside, the fog has lifted and seas are rippled with a northwesterly swell to 2m.
Our sitrep reports ‘In transit to the main sampling area for both CEAMARC and the southern CASO sites. Expeditioners and crew are busy with last minute preparations for Christmas lunch and festivities this afternoon. The 3rd CPR is currently in the water. Yesterday afternoon the first bulk seawater sample was collected for metagenomic analysis using techniques based on those developed for sequencing the human...
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Sunday, 23 December 2007 22:46
CAML: Buckets of mud
Written Sunday 23rd December, 2007
By Margot Foster
Conditions are ideal for the work we are doing. There’s very little wind, a bit of high cloud and the patches of sunshine make it almost balmy at around minus 2 degrees.
The scientific program is in full flight. Overnight the last three moorings were sent to the deep. Very early this morning we were heading through the loose pack-ice to CEAMARC 27 – the first station of the project, (the Collaborative East Antarcticta Marine Census). There are 67 points marked on the map covering the sea between Dumont d’Urville and the Mertz glacier. It’s an ambitious plan to fully sample each of those positions in the coming weeks.
The first equipment out was the epibenthic sled. It sc...
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Saturday, 22 December 2007 22:44
CAML: Solstice
Written Saturday 22nd December
By Margot Foster
Finally, notes on the ice have made it into the Sitrep. “ICE CONDITIONS: 4/10 loose pack, few icebergs.”
In my cabin the lowered blind has been lit at the edges all night by the sun. I woke disoriented at 0400 by the clunking sound as the metal ship moved through bits of ice and was on the bridge early to watch us glide into the pack at around 0700.
It’s down to minus 2 and I can feel the chill through the floor. Big socks and ugg boots now with gloves and hat in the pockets of the snow jacket.
We saw another ship on the horizon – the ‘Orion’ leaving Commonwealth Bay. At 6nm distant it may have been an iceberg but the whale and bird watchers confirmed the ...
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Thursday, 20 December 2007 22:41
CAML: Crossing the line
Written Thursday 20th December 07
By Margot Foster
A social day with the inaugural ‘Shipboard Seminar’ scheduled at 1300hrs These are to be held in ‘D’ deck recreation room twice a week.
Today’s bill:
“Dr Bryan G. Fry, from the Department of Biochemistry & Molecular Biology at the University of Melbourne is speaking on ‘Evolution of an Arsenal: Diversification of the Reptile Venom System’. Dr Fry will show some marvellous pictures of dangerous reptiles”
We have more offers of talks than there are spaces for them so I’ll offer a ‘Speakers Corner’ in the evenings as well.
We have crossed the line – the 60th parallel, and are officially in Antarctica. The event is marked by a vi...
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Wednesday, 19 December 2007 22:39
CAML: Fair winds and following seas
Written Wednesday 19th December 2007
By Margot Foster
Pleased to report that I've found my sea legs and am spending longer in the galley after a gingery start.
I’ve been prowling the ship and everywhere you turn there's an experiment or research underway - whether it’s the continuous plankton recorder (CPR) or testing the water's chemical composition, every lab is busy. The temperature is down to 6 degrees now we are in mid fifty latitudes
I watched the CPR being winched in from the trawl deck with its silk roll trapping plankton during an overnight trawl. What a remarkable contraption it is! It’s like a chunky little silver rocket with a propeller behind it. It’s so simple and elegant and successful that this piece of...
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