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SUMMARY:Seasonal changes in Circumpolar Deep Water in the Amundsen Sea\, A
 ntarctica\, using seal-borne tags - Helen Mallet\, University of East Angl
 ia
DTSTART:20170524T100000Z
DTEND:20170524T110000Z
UID:TALK71720@talks.cam.ac.uk
CONTACT:Dr Peter Davis
DESCRIPTION:In the Amundsen Sea\, Antarctica\, warm salty Circumpolar Deep
  Water (CDW) is increasingly crossing the continental shelf toward the Pin
 e Island Glacier (PIG) via three bathymetric troughs\, accelerating the me
 lting of the ice sheet there. Due to the difficulty of collecting data in 
 the harsh conditions in the Amundsen Sea\, little is known about the spati
 al and temporal variability of CDW\, particularly on the seasonal scale. U
 sing a ground-breaking new dataset of 10838 seal-tag profiles\, collected 
 throughout the undersampled winter season\, we find a thicker layer of CDW
  in winter (June to October) than in summer (February to May) in the easte
 rn trough\, the reverse seasonality of that seen in the western trough. CD
 W is warmer in summer than winter\, for a given density. The warmest water
  was observed in the eastern trough\, at 1.64°C. In Pine Island Bay\, the
  warmest water is at 1.10°C.
LOCATION:British Antarctic Survey\, Innovation Centre\, Seminar Room 2
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