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SUMMARY:The effects of coastal ocean warming and increased supra-glacial r
 un-off on water temperature and circulation in Kangerdlugssuaq Fjord\, Eas
 t Greenland - Andrew Sole (University of Aberdeen)
DTSTART:20100120T163000Z
DTEND:20100120T173000Z
UID:TALK22369@talks.cam.ac.uk
CONTACT:Poul Christoffersen
DESCRIPTION:Recent studies have suggested that regional changes in ocean t
 emperatures could be a potential trigger for retreat and acceleration of G
 reenland tidewater outlet glaciers. There is therefore a need to understan
 d how these changes are propagated along fjords to the glaciers’ calving
  termini. We use the Bergen Ocean Model to simulate ocean circulation in K
 angerdlugssuaq Fjord to assess the impact that warmer coastal waters and i
 ncreased supra-glacial run-off could have on the submarine melt rate of Ka
 ngerdlugssuaq Gletscher. The model includes tidal and freshwater runoff fo
 rcing and is able to replicate well observed temperature and salinity prof
 iles. We find that warm coastal water flows into the fjord at several dist
 inct depths as a result of freshwater outflow near the surface and at inte
 rmediate depth. The deeper (~400m) warm water plume reaches the terminus o
 f Kangerdlugssuaq Gletscher and increases submarine melt rates. The magnit
 ude of supraglacial runoff is crucial in controlling the penetration of wa
 rm water into the fjord because of the compensatory inflow at depth. 
LOCATION:Scott Polar Research Institute\, LIBRARY (1ST FLOOR)\, doors open
  for general access
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