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Dispatches from the crew of the Scientists and Crew of the LMG 02-05

Dan Costa, UCSC professor of biology, takes us on a scientific
voyage of Antarctic discovery. As chief scientist aboard the Research Vessel
Laurence M. Gould, Costa documented the work of researchers
investigating how climate drives the biology of orcas, penguins,
and crabeater seals.



Aug 5
Greetings from the Laurence M. Gould. We are currently under way heading towards the southern end of our study area. This picture on the left shows Chris Fritsen a sea ice biologist holding an adelie penguin for the seabird group. The seabird group has been studying the foraging ecology of Adelie Penguins. The birds are waiting their turn to have a small satellite transmitter attached.

Aug 6 was a picture taken while we were traveling south through the Biscoe Islands. We are now in heavy ice and it makes going rather difficult. From this point on we will probably be traveling with our sister ship the Nathaniel Palmer which is an icebreaker. I hope you enjoy our images.

Cheers, Dan Costa - Chief Scientist GLOBEC cruise LMG 02-05


Boscoe Islands
south through the Biscoe Islands

Greetings from the Laurence M. Gould. Todays selection for the picture of the day is for Aug. 9. We continued our transit to the southern most part of the survey grid. As the LM Gould has limited ability to move around in the pack ice, we must coordinate our movements with the N.B. Palmer. This requires the two vessels to work together.


 

This morning started with the sighting of penguins by the Palmer. The Gould then put our penguin biologists on the ice to put satellite tags on 4 Adelie penguins. In addition to the penguin team the ice team went out and collected ice samples. As the penguin team finished, a number of crabeater seals were sighted. The seal team than moved into action and captured a male crabeater seal. As the seal team would be at least 2-3 hours, the krill dive team than got into action and carried out a dive to collect krill. Meanwhile the N.B. Palmer carried out a series of measurements in the vicinity of the L.M. Gould. This image shows the L.M. Gould in the foreground, with researchers being lifted off the ice back onto the bow of the Gould. Meanwhile, you can just make out at the rear of the Gould the dive team returning and off in the distance the N.B. Palmer completing her measurements. Photo by Dan Costa

Aug. 11. We completed our transit to the southern most part of the survey grid. It was slow going as we got into some very heavy ice and had to turn around to find some ice where the Gould could maneuver on her own once the N.B. Palmer left to continue the survey grid. Once on station the Ice team immediately began sampling the ice to insure that this is an appropriate site to spend the next 7 days and the krill dive team set about creating dive holes in the ice and preparing for their under ice transects.

We faced the coldest temperatures yet with the thermometer reaching -18 C or 0 F! Working outside at these temperatures for prolonged periods is very tiring. Todays pic of the day was taken by Kerry Klaffey and shows the first group of researchers heading out onto the ice to establish our first process station. This is the first time we have been able to set the gang plank out onto the ice. This makes movement of gear and people much easier compared to using the crane and personnel basket.

Todays selection for the picture of the day is for August 12. We are currently at Ice Station Sparky name after the Marine Tech who had a birthday the day we arrived. This image shows the krill group clearing ice from a future SCUBA diving hole. The ice was cut with a long chain saw. Once the ice was cut they use ice augers to get a grip and pull the large ice chunks out of the way. The divers have had to share their dive holes with the seals that also seem to like them. Photo by Dan Costa


Midday Sun

 

The above iimage shows the dive team preparing to enter the water in search of krill under the ice. They caught enough to begin another growth experiment. Jenny, the Marine Tech, keeps a close eye on the divers and the Zodiac. Adelaide Island and the NBP are shown in the background off the stern. The NBP still remains by our side to guide us through the last area of dense ice. Photo by Karina Johnston.


This image shows one of the 3 drifting ice buoys that are being deployed through this cruise. On the right is a rod in which there are 44 thermistors spaced 5 cm apart to measure air, snow, ice and water temperatures. The long arm in the center holds a sonic snow depth sensor and air temperature sensor. The left hand control box houses sensors for barometric pressure, GPS position and the ARGOS transmitter. Hidden under the snow and ice are sensors that measure ice growth/ablation. While we were deploying this drifting ice buoy, the seal team was very busy with numerous seals both hauled out on the ice and also playfully swimming around. The diving team had help on their dives today as the seals were using the same holes in the ice as the divers. Some of the seals would come out on top of the ice to assist the dive tenders. (Photo by Bruce Elder)

Aug.14th. Today was the coldest and windiest day of the cruise so far, with temperatures hovering around -18 C and winds gusting up to 40 knots. The high winds pushed the ship and floe North at a speed of 1.5 knots during most of the day, keeping the divers out of the water and the seals under the ice. One lone, brave Emperor penguin was sited speeding on his belly across the ice floe. As evening (and darkness) fell the winds died down to 15 knots, and the Ice Team decided to brave the elements to go out onto the ice. With the help of the ship lights they cored a second-year ice floe that was 2.5 m thick with more than 1.3m of snow and slush on top. All in all it was another successful day for scientists aboard the L. M. Gould. This chapter written by Kerry Claffey with editorial help from Bruce Elder and Paula Adkins.


Greetings from the R/V Gould operating in the Western Antarctic Peninsula Region. The R/V LM Gould and its inhabitants continued following the NBP to our next ice processing station. Luckily it has been an easy going ride so far. Since we were in transient, ice sampling and diving was halted and the Penguin group started their many countless hours searching for the Adelie Penguins. The rest of the groups tried to catch up on processing ice samples, krill counts and computer data. As the day progressed, the scenery was scattered with glaciers of different sizes, formations and colors. One just had to stop work, take in the beauty and realize that we are in Antarctica! Photo by Shonna Dovel.
Cheers,
Scientists and Crew of the LMG 02-05


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