Thursday 10 January 2008 à 16:06
Position of Astrolabe at 10:15 UTC
Anne Goffart. Correspondent aboard the Astrolabe
66°41 S
139°56 E
Thursday 10 January 2008 à 13:55
Position of Aurora Australis
Sophie Mouge. Correspondent aboard the Aurora Australis
FROM: Martin Riddle
DATE: 10/01/08
REPORT (SITREP) NO.: 325
UNIVERSAL TIME: 0100
LOCAL (SHIP) TIME: 1200
AUSTRALIAN EASTERN STANDARD TIME: 1200
POSITION: -65 23.6S, 149 29.6E
HEADING: Various
CURRENT SPEED (KNOTS): 0 Kts
DISTANCE TO NEXT WAYPOINT (NAUTICAL MILES): n/a
DISTANCE COVERED LAST 24
HOURS (NAUTICAL MILES): 120.2 Nm
WEATHER CONDITIONS: Overcast with low
cloud, good visibility, wind 18 kts from 330T gusting to 23 kts
AIR
TEMPERATURE: 0.0
SEA TEMPERATURE: -1.6
SEA CONDITIONS: Moderate seas and WNW
swell 3 m
ICE CONDITIONS: Frequent ice-berg, ship sitting in open water
close to edge of pack-ice.
REMARKS: We are continuing working southwards, sampling along the eastern
transect of the CASO circuit. This morning we deviated slightly to the west
to avoid dense pack-ice that accumulates to the north and east of the Mertz
Glacier. To avoid speending time pushing through the sea ice we have
re-located the sampling sites so that they follow the ice edge southwards
towards the continental shelf break. On each of the CASO stations we have
occupied so far we can see a distinct layer of cold, oxygen-rich bottom
water near the sea-floor. There is, however, a clear contrast between the
bottom water measured on the western and eastern CASO legs. In the west, we
sampled the bottom water formed in the Mertz polynya area, which is fresher
than the water above it and particularly rich in oxygen and
chlorofluorocarbons (CFCs). In the east, the bottom water is lower in oxygen
and is much saltier, indicating this water was formed in the Ross Sea and
has travelled west through the deep channel south of the Balleny islands.
Regards, Martin and Sarah.
Thursday 10 January 2008 à 13:15
First operations on the Astrolabe!
Stéphanie Pavoine. Based in Dumont D’Urville station
At the first breakfast on board, I gulp down a coffee and descend to the hold.
Thursday 10 January 2008 à 11:08
A hole in the ozone layer
Sophie Mouge. Correspondent aboard the Aurora Australis
Big areas of pack ice are surrounding the ship… For those of us present on the bridge this morning, this allows us to spot the first emperor penguins of the voyage!
Thursday 10 January 2008 à 10:53
Data for the Aurora Australis
Sophie Mouge. Correspondent aboard the Aurora Australis
Position of the icebreaker:
latitude: 62°24.520' S
longitude: 149°12.330’ E
Wind:
direction: N
speed: 10 knots
Water temperature: -1.6°C
Air temperature: 0.3°C
Atmospheric pressure: 982 hPa
Relative humidity: 85%
UV-B: 5.4 W/m²
Water depth: 3,000 meters
Sunset: 23h42/ sunrise: 02h39
