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| Titel |
The Supply of Warm Atlantic Water to Nioghalvfjerdsbræn in North East Greenland |
| VerfasserIn |
Paul Dodd, Mats Granskog, Edmond Hansen |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250088123
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| Publikation (Nr.) |
 EGU/EGU2014-2199.pdf |
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| Zusammenfassung |
| Nioghalvfjerdsbræn is a floating tongue glacier in North East Greenland that drains
approximately 8 % of the area of the Greenland ice sheet. We are concerned about the supply
of warm Atlantic water to the subglacial cavity, which may interact with the 60 km long
floating ice tongue. In September 2011, August 2012 and September 2013 we completed
CTD and δ18O sections across the 300-400 m deep Belgica-Norske-Westwind trough system
on the East Greenland shelf. This u-shaped trough system may allow warm Atlantic water
found below 150 m in the Greenland Sea to cross the shallow (100-200 m) continental shelf
and enter the subglacial cavity beneath Nioghalvfjerdsbræn. In August 2012 Dijmphna sound
(a sound connected to Nioghalvfjerdsfjord) was ice free and we were able to complete a
section of CTD and δ18O measurements from the mouth of the sound up to the
Nioghalvfjerdsbræ ice tongue. Our 2012 measurements from Dijmphna sound show
warmer, fresher water at the bottom of the sound and a thicker, fresher, warmer
layer at the surface compared with similar measurements collected in August 1997 |
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