Colm Ó Cofaigh

TL;DR: In this paper, the authors show that during the last glacial cycle a palaeo-ice stream drained the Antarctic Peninsula Ice Sheet (APIS) through Marguerite Bay to the edge of the continental shelf via a bathymetric trough (Marguerite Trough).

TL;DR: In this article, geophysical data from the Antarctic Peninsula continental shelf reveal streamlined subglacial bedforms in a cross-shelf trough, which exhibit progressive elongation with distance along the trough, and record flow of a paleo-ice stream from the Antarctica Peninsula Ice Sheet during the last glacial maximum.

TL;DR: In this paper, the authors present a series of timeslice maps for 20 ka, 15 ka, 10 ka and 5 ka, including grounding line position and ice sheet thickness changes, along with a clear assessment of levels of confidence.

TL;DR: In this paper, the rapidity of ice retreat is inferred from diagnostic assemblages of submarine landforms, produced at ice-stream sedimentary beds, exposed by ice retreat across high-latitude shelves, demonstrate that deglaciation occurs in three main ways: rapidly, by flotation and breakup; episodically, by still stands and/or grounding events punctuating rapid retreat; or by slower retreat of grounded ice.

TL;DR: In this article, the authors reconstructed the thickness of the sedimentary bed under a large Antarctic paleo-ice stream for the first time, showing that fast flow is indicated by streamlined seafloor lineations that form the surface of a layer of low shear strength, unsorted sediment, averaging 4.6 m thick.