2016-2017 USAP Field Season
Potential direct geologic constraint of ice sheet thickness in the central Transantarctic Mountains during the Pliocene warm period
Dr. Gordon R Bromley
The University of Maine
Supporting Stations: McMurdo Station
This project proposes to reconstruct the long-term history of glacier variability in the upper Beardmore and Shackleton Glaciers during periods of warmer-than-present climate. Beardmore and Shackleton Glaciers are major outlets of the East Antarctic Ice Sheet with extensive ice-free terrain located close to the ice-sheet margin. Resolving the history of ice-surface-elevation change in these regions will: (1) Help identify periods during which the East Antarctic Ice Sheet was at least as extensive as today; (2) Potentially provide insight into ice-sheet behavior on time scales longer than the late Pleistocene; and (3) Provide a benchmark for ice-sheet geometry in long-term Antarctic ice-sheet models.
Field Season Overview
The field team will travel to Shackleton Camp via LC-130 aircraft and then out to two field locations via Twin Otter aircraft. The first camp will be at the Dominion Range where team members will map and collect samples from Pliocene-age glacial deposits of the East Antarctic Ice Sheet. They will then fly by Twin Otter to the Roberts Massif, where they will conduct similar work. They will travel by foot and snowmobile for sampling and camp operations. All samples will be shipped to the home institution at the end of the season.
Deploying Team Members