The marine geological imprint of Antarctic ice shelves.
作者： James A. Smith , Alastair G. C. Graham , Alix L. Post , Claus-Dieter Hillenbrand , Philip J. Bart
DOI: 10.1038/S41467-019-13496-5
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摘要: Reductions in the thickness and extent of Antarctic ice shelves are triggering increased discharge marine-terminating glaciers. While impacts recent changes well documented, their role modulating past ice-sheet dynamics remains poorly constrained. This reflects two persistent issues; first, effective discrimination sediments landforms solely attributable to sub-ice-shelf deposition, second, challenges dating these records. Recent progress deciphering geological imprint is summarised, including advances methods proxies reconstruct drivers change. Finally, we identify several overcome fully exploit paleo record. The collapses Antarctica due warming make it essential understand shelf conditions mechanisms. Here Smith colleagues review latest via sediments, proxy indicators.
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