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SUMMARY:Observations of turbulent dissipation in the Amundsen Sea Embaymen
 t\, Antarctica - Yvonne Firing\, NOC\, Southampton
DTSTART:20170510T100000Z
DTEND:20170510T110000Z
UID:TALK71718@talks.cam.ac.uk
CONTACT:Dr Peter Davis
DESCRIPTION:Microstructure and finestructure observations are used to inve
 stigate the spatio-temporal distribution and drivers of turbulence in the 
 Amundsen Sea Embayment\, Antarctica.  Microstructure observations collecte
 d in austral summer 2014 show low background levels of turbulent dissipati
 on (10^-10 W/kg) over most of the continental shelf below the surface laye
 r\, with some elevated values near the shelfbreak and near topography\, an
 d greatly elevated values near the ice shelf front.  Turbulent energy diss
 ipation levels are correlated with finestructure horizontal and vertical k
 inetic energy associated with internal waves\, as computed from co-located
  lowered acoustic Doppler current profiler (ADCP) profiles. Finestructure 
 kinetic energy from four two-year and two one-year moored ADCP records var
 ies by up to an order of magnitude in time\; values are higher in the summ
 er at most sites\, but exhibit wintertime peaks at one instrument sampling
  the thermocline.  
LOCATION:British Antarctic Survey\, Innovation Centre\, Seminar Room 2
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