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SUMMARY:Dynamics of a barotropic current at an ice shelf front - Nadine St
 eiger\, University of Bergen
DTSTART:20200312T140000Z
DTEND:20200312T150000Z
UID:TALK140509@talks.cam.ac.uk
CONTACT:Louis Couston
DESCRIPTION:Getz Ice Shelf in West Antarctica receives more heat across th
 e continental shelf than what is needed to produce the observed melt rates
 . Recent mooring observations suggest that 90% of the volume transport and
  65% of the temperature transport toward the ice shelf is linked to the ba
 rotropic component of the current towards the ice shelf. It is unknown whe
 ther and how much of a barotropic current can penetrate into the cavity ac
 ross the discontinuity in water column thickness.\n\nI will present an ide
 alized study with MITgcm\, where we find that strong vertical velocities a
 nd friction allow the flow to partly enter the ice shelf cavity. Only a sm
 all fraction of the current penetrates deep into the cavity\, while a stro
 ng current flows parallel to the ice shelf front\, largely enhancing basal
  melt. How much of the barotropic current enters the cavity and how far it
  reaches depends on the ice shelf- and bedrock topography\, as well as the
  stratification.\n
LOCATION:British Antarctic Survey\, Seminar Room 1
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