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SUMMARY:Indrani Das (Lamont-Doherty Earth Observatory)
DTSTART:20210216T160000Z
DTEND:20210216T170000Z
DTSTAMP:20260423T035752Z
UID:BASIDP/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/BASIDP/1/">O
 bservations of the Grounding Line and Basal Conditions of Thwaites Glacier
  and Comparisons with Continental-scale Ice Sheet Model Inversions</a>\nby
  Indrani Das (Lamont-Doherty Earth Observatory) as part of BAS Ice Dynamic
 s and Paleoclimate Seminars\n\n\nAbstract\nThwaites Glacier is one of the 
 fastest-moving and fastest-changing glaciers in West Antarctica. The groun
 ding line of the Thwaites Glacier is retreating rapidly primarily due ocea
 n-induced basal melt. Previous observations have also shown that the basal
  conditions underneath Thwaites Glaciers can lead to rapid sliding. Howeve
 r\, the processes and conditions at the base of any glacier is very diffic
 ult to identify and model. The accuracy of our predictions of how a glacie
 r might change is dependent on the ice sheet models identifying the primar
 y drivers of change and incorporating the correct physical representation 
 of the processes. As a part of the ITGC PROPHET\, I am working on identify
 ing basal conditions underneath the Thwaites Glacier using Operation IceBr
 idge ice-penetrating radar. The radar-interpreted basal conditions are the
 n compared with inversions of basal friction coefficient and basal drag fr
 om three continental-scale ice sheet models ISSM\, Uá and STREAMICE using
  similar boundary conditions and Weertman’s sliding law. In this talk\, 
 I will present preliminary results of the radar and model comparisons of b
 asal conditions underneath the Thwaites Glacier and near its grounding zon
 e.\n
LOCATION:https://researchseminars.org/talk/BASIDP/1/
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