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SUMMARY:Past ice sheet evolution: West Antarctica during warm climate inte
 rvals - Lara Perez\, British Antarctic Survey
DTSTART:20211125T130000Z
DTEND:20211125T140000Z
UID:TALK161863@talks.cam.ac.uk
CONTACT:Anna Belcher
DESCRIPTION:Future changes of polar environmental conditions under differe
 nt global warming scenarios are highly debated. Ice-free Arctic summers\, 
 increased melting of Greenland Ice Sheet and retreat of sectors of the Ant
 arctic ice sheets are anticipated consequences of ongoing climate change. 
 Key uncertainties in future projections of climate change are related to t
 he lack of understanding of the past behavior of ice sheets\, and their in
 fluence on the oceanographic system and climate. On glaciated margins\, ch
 anges in ice-sheet extent result in the erosion\, transport\, and redistri
 bution of sediments across the inner continental shelf to more distal sedi
 mentary basins. Geophysical and geological records are used to develop the
  stratigraphic architecture that allows for the reconstruction of shifts i
 n ice-sheet dynamics and extent\, and identification of cryospheric links 
 with the global climate system. The present-day morpho-stratigraphy of the
  Ross Sea is the result of Cenozoic tectonic and cryospheric events. In th
 is talk\, I’ll show you examples of glacial-related features observed on
  a dense dataset of seismic reflection profiles in the Ross Sea. Through e
 valuation of such seismic facies and age constraints from the drilling sit
 es\, I propose a correlation of the regional patterns of early to middle M
 iocene (~ 18 Ma - ~ 14 Ma) ice-sheet variance in the Ross Sea. 
LOCATION:King Richard Room\, Darwin College
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