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A New Bathymetric Compilation Highlighting Extensive Paleo–Ice Sheet Drainage On The Continental Shelf, South Georgia, Sub-Antarctica, Alastair G. C. Graham, Peter T. Fretwell, Robert D. Larter, Dominic A. Hodgson, Christian K. Wilson, Alex J. Tate, Peter Morris

Marine Science Faculty Publications

A grid derived from a new compilation of marine echo-sounding data sets has allowed us to visualize and map the geomorphology of the entire continental shelf around South Georgia at an unprecedented level of detail. The grid is the first continuous bathymetric data set covering South Georgia to include multibeam swath bathymetry and represent them at a subkilometer resolution. Large and previously undescribed glacially eroded troughs, linked to South Georgia's modern-day fjords, radiate from the island, marking the former pathways of large outlet glaciers and ice streams. A tectonic or geological influence is apparent for the major troughs, where glaciers …