On Friday, I took a quick tour of several sites near the Larsen C and B area with a British Antarctic Survey (BAS)-supported team including pilot Doug Cochran, general assistant Malcolm Airey, Frazier (sightseeing weather forecaster). The main goal of the trip was to repair a precision GPS station. The station measures rock uplift in the Larsen B region as a way of modeling both the past and present ice loss. For a change of pace, let me tell the story as picture captions. (All photos are courtesy Ted Scambos).
Yankee Camp basks in the sunshine of northern Larsen C Ice Shelf. This is CIRES Director Koni Steffen and graduate student Dan McGrath's base for their radar surveys, which range out to 100 kilometers from this site. The Brits gave it the name, tongue in cheek. The funny thing is, Dan is the only American-born person there. We have stopped to drop off two fuel drums for the surveys. Dan and Tom (a BAS general assistant) are out surveying.
Chilean glaciologist Dr. Gino Casassa prepares coffee for a visitor inside the main tent at Yankee Camp. Koni brought two (yes, two) Nespresso machines to Camp Yankee. One is an emergency back-up, says Koni. A Pepperidge Farm Chessman butter cookie was also offered (and munched). The net value of that single cookie, delivered here on the Larsen C Ice Shelf, is probably on the order of $2. Thanks.
Gino and Koni Steffen enjoy a very pleasant day on the Larsen C Ice Shelf.
Large cracks line the northeastern edge of the Larsen C Ice Shelf. These are quite typical of ice shelves, and not an indication of change or warming by themselves. We are en route to Cape Framnes. In the distance there is a large shore lead of open water, then sea ice at the horizon.
This photo looks north across the Larsen B Embayment, to an area of open water and sea ice that was once covered by thick shelf ice. Jason Peninsula is an ice-covered ridge of land with small flat rocky outcrops. The CAPF GPS station is located at the far side of the brownish half-moon-outcrop area. Note the bluish patches of wind-swept ablating ice on the flanks of the ice sheet. The sea to the right of the outcrop showed us that the wind was quite high, with whitecaps blowing off the tops of the waves.
Malcolm Airey unloads gear in a stiff wind, preparing for a short ski run down a hill to the Cape Framnes outcrop, while Ted watches idly. Doug Cochran landed the plane on a shallow uphill slope, that flattened just at the end of the landing run. Winds gusted to twenty to thirty knots during our stop. Later, for take off, Doug turned the plane around and took it back over the slope break, downhill and downwind. With the wind at our back, we were doing 70 to 80 miles per hour over the surface before lifting off, heading rapidly for the outcrop we had just climbed away from. Finally the wings gathered air underneath them and lifted us away. It rivaled the Palmer Station landing of last year.
The Cape Framnes GPS station had an electronics problem and required several new components.
With winds gusting to 25 knots, Malcolm strung an orange tarp to try to shield us from the chilly blast. It was partially effective. A bit like hiding beneath a summer dress during a hurricane.
Malcom and Ted repair the GPS system. It was a success.
"What do you mean, I have to drag the sled back??"
After a thrilling take off, we next flew to Cape Disappointment for a recon of the planned last AMIGOS site. Cape Dis extends eastward from the Larsen B coast, essentially marking the boundary between the disintegrated portion of the Larsen B (behind the cape in this view) and Scar Inlet. Our favored site for the AMIGOS is the left-hand cliff in the image. Between the foreground Cape peninsula and the mountain ridge is the Crane Glacier embayment, formerly the outflow of Crane Glacier, but now covered by sea ice. At the far left, behind Cape Dis, is Exasperation Inlet, and the small rocky knoll across the Inlet is Delusion Point. Somebody was really having a bad day.
This cliff is where we hope to set up the AMIGOS tower. I've marked the preferred site with a red dot, just above a break in slope that will give the camera an excellent view. The pilot thought a landing very near the outcrop was feasible.