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SUMMARY:Turbulent melting of a glacier front using high resolution simulat
 ions - Mainak Mondal (New York University Abu Dhabi)
DTSTART:20210714T130000Z
DTEND:20210714T140000Z
UID:TALK161344@talks.cam.ac.uk
CONTACT:Dr Irena Vankova
DESCRIPTION:Over the past few years\, valuable new observations from the g
 lacial front of Antarctica and Greenland using high-resolution turbulence 
 profilers at the ice shelf borehole (Davis and Nicholls 2019\; Kimura et a
 l. 2015\; Begeman et al. 2018\; Jenkins et al. 2010) iterated the importan
 ce of turbulent processes in controlling the melting and dissolution of th
 e ice-ocean interface. Previous laboratory experiments (McConnochie et. al
 .\, 2015\,17\,18) and high-resolution numerical simulations (Gayen et al.\
 , 2015\, Mondal et. al\, 2019\, Vreghdenhil et al.\, 2020 Couston et al.\,
 2021) also have extensively discussed the role of turbulence in the basal 
 melting.  My talk spans from turbulence-resolving scales up to the full de
 pth of a fjord. At the turbulence scale\, I investigated how the turbulent
  melting/freezing at the ice-interface is affected by ice-geometry\, surfa
 ce-roughness\, ambient velocity shear and external subglacial discharge us
 ing fluid-only Direct Numerical Simulations. At the large scale\, I invest
 igated the dynamics of a subglacial discharge plume subjected to varying s
 ubglacial conduit size\,  shape and distributions as well as 3d ice-geomet
 ry using the MITgcm plume model. These insights can help to provide better
  estimations of the melting of the ice-face\, essential for more accurate 
 projections of future sea-level rise.\n\n
LOCATION:British Antarctic Survey\, Zoom
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