Storstrømmen and L. Bistrup Bræ, North Greenland, Protected From Warm Atlantic Ocean Waters
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
Dokumenter
- Fulltext
Forlagets udgivne version, 2,49 MB, PDF-dokument
Storstrømmen and L. Bistrup Bræ are 20- and 10-km wide, surge type glaciers in North Greenland in quiescent phase that terminate in the southernmost floating ice tongue in East Greenland. Novel multi-beam echo sounding data collected in August 2020 indicate a seabed at 350–400 m depth along a relatively uniform ice shelf front, 100 m deeper than expected, but surrounded by shallower terrain (<100 m) over a 30-km wide region that blocks the access of warm, salty, subsurface Atlantic Intermediate Water (AIW) at +1.6°C. Conductivity temperature depth data reveal waters in front of the glaciers at −1.8°C not connected to AIW in the outer fjord, Dove Bugt. The recent grounding line retreat of the glaciers is attributed to glacier thinning at its ablation rate, with little influence of ocean waters, which illustrates the fundamental importance of knowing the bathymetry of glacial fjords.
Originalsprog | Engelsk |
---|---|
Artikelnummer | e2021GL097320 |
Tidsskrift | Geophysical Research Letters |
Vol/bind | 49 |
Udgave nummer | 5 |
Antal sider | 8 |
ISSN | 0094-8276 |
DOI | |
Status | Udgivet - 2022 |
Bibliografisk note
Funding Information:
This work was performed in the Department of Earth System Science, University of California Irvine, and at Caltech’s Jet Propulsion Laboratory under a contract with the National Aeronautics and Space Administration as part of the Earth Venture Mission Ocean Melting Greenland (OMG). We thank the professional crew (James Killingbeck and Bror Prehn) who helped conduct the boat survey, and Royal Arctic line for kindly assisting the M/V Wave through a difficult passage of sea ice south of Dove Bugt.
Publisher Copyright:
© 2022. The Authors.
Antal downloads er baseret på statistik fra Google Scholar og www.ku.dk
ID: 302543386