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Victoria University Antarctic Research Expedition Science and Logistics Reports 2002-03: VUWAE 47


This project was designed both to investigate the little explored sub-ice shelf environment and to provide essential site data for coring 1000 m into the sea floor by ANDRILL for a history of the McMurdo-Ross Ice Shelf (MRIS). Ross Island has been depressing the crust under its own weight for at least the last million years, and at the same time has been acting as the western pinning point for the MRIS. As a result sediment has been accumulating in a sea floor depression over 900 m deep to the south of Ross Island in Windless Bight (Fig. 2). These sediments record the presence and possible past absence of the MRIS, and the movement of Ross Sea Shelf Water behind Ross Island between McMurdo Sound and the central Ross Sea