Monday 14 January 2008 à 17:46

Position of Astrolabe at 12:37 UTC

Anne Goffart. Correspondent aboard the Astrolabe

66°42 S
142°27 E

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Monday 14 January 2008 à 15:55

Position of Aurora Australis

Sophie Mouge. Correspondent aboard the Aurora Australis

UNIVERSAL TIME: 0100
LOCAL (SHIP) TIME: 1200
AUSTRALIAN EASTERN STANDARD TIME: 1200
POSITION: -66 26.4S, 140 31.3E
HEADING: Various
CURRENT SPEED (KNOTS): 2.5 kts
DISTANCE TO NEXT WAYPOINT (NAUTICAL MILES): n/a
DISTANCE COVERED LAST 24 HOURS (NAUTICAL MILES): 113.9 Nm
WEATHER CONDITIONS: Clear skies and good visibility, wind decreasing 20 kts from 102T gusting to 25 kts
AIR TEMPERATURE: 0.3
SEA TEMPERATURE: -0.7
SEA CONDITIONS: Moderate seas and moderate confused swell 2-3 m
ICE CONDITIONS: Frequent large icebergs otherwise open water, ice covered continent in sight.
REMARKS: With only a few days of sampling left, weather forecasts and sea-ice conditions from satellite imagery are being continually reviewed and plans fine-tuned to ensure we make the best use of the available time. Yesterday it seemed that some planned sites to the west would be covered in dense pack-ice and not easily reached. The strong south-easterly winds last night which gusted to more than 30 kts, however, seemed to have worked in our favour, moving the edge of the pack-ice westwards and clearing these sites. As a consequence we will try to sample them. Yesterday's shallow sites (~200m) proved to be very diverse with complex multi-layered sponge and bryozoan dominated communities. Unfortunately the trawl with the digital camera which has been providing us with such excellent images of the sea-bed suffered some damage when it landed up-side down. The Science Technical Support wizards have been busy fixing it overnight and it should be operational again soon. The French beam trawl was used at two sites yesterday and it proved very efficient, collecting very large hauls and appearing to retain some of the smaller infauna that may be lost through the mesh of the AAD trawls. We are currently sampling from the bottom (1200m) of a closed basin northeast of Dumont D'Urville, which appears to be a trap for fine sediment - more about this tomorrow.
Regards, Martin and Sarah.

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Monday 14 January 2008 à 14:43

Stefan Chilmonczyk ‘hunt’ for Channichthyids

Sophie Mouge. Correspondent aboard the Aurora Australis

Today as everyday, I hope for the presence of a Channichthids specimen in the trawl that comes from the bottom of the southern ocean.

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Monday 14 January 2008 à 14:35

Data for the Aurora Australis

Sophie Mouge. Correspondent aboard the Aurora Australis

Position of the icebreaker:
- latitude : 66°26,639’ S
- longitude : 140°31,497’ E
Wind:
- direction: E-SE
- speed: 12 knots
Water temperature: - 0,8 °C
Air temperature: 0,2 °C
Atmospheric pressure: 985 hPa
Relative humidity: 75%
UV-B: 7.6 W/m²
Water depth: 1030 meters
Sunset: 00:29/ sunrise: 03:04

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Monday 14 January 2008 à 13:23

Icebergs in sight!

Stéphanie Pavoine. Based in Dumont D’Urville station

Morning free. We are sailing along the Mertz glacier. It is splendid, lost in the end of this gigantic world.

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