LMG02-1A Weekly Cruise Report -
Laurence M. Gould (LMG) arrived at the new WHOI mooring site C1 around 1400
Monday (February 18). A bathymetric survey was first conducted to find a site
with a relatively flat bottom at 450 m.
The C1 mooring was then deployed and the ship headed SW to the proposed
new C2 mooring site. Several drifters and floats were deployed along the way. As we approached C2, it became clear that the
edge of the pack ice was located several miles north of C2, so deploying a
mooring there was not possible. We then
moved north along the eastern side of George VI channel and found a suitable
site in 850 m of water for the C2 mooring. After a detailed bathymetric survey,
C2 was deployed and we headed for C3, the third mooring deployment site. The weather worsened rapidly and by the time
we reached C3, it was too rough for mooring operations, and we headed NE
towards the shelter of
The ship spent the rest of Tuesday and Wednesday in mostly poor conditions doing MM survey work from south of Rothera north through Tickle Pass, but finding relatively few humpback, minke, and killer whales. The weather improved over Wednesday night, and on Thursday morning, the ship headed SW for the C3 mooring site. Late that afternoon, mooring C3 was deployed, and the ship steamed to B1 where we spent Friday morning dragging for the missing B1 mooring with no success. With excellent conditions for visual MM work, the ship then steamed south to find the ice edge, then zig-zagged eastward along the edge for the rest of the day. Many whales were observed near the ice edge, and the zodiac was launched to photograph the whales and take biopsies from five humpback whales.
By Saturday morning, winds had increased to 20-30
kts and worsening conditions prevented MM survey
work. About 1300, the LMG steamed north to deploy the SIO mooring S9 in Rothera Channel, then started west around Adelaide Island,
heading for Matha Strait. Ice and bad weather prevented
the ship from entering
Tomorrow, we plan to continue with the MM survey work weather permitting and deploy S7, before steaming to Palmer Station to arrive at 0800 Tuesday.