Complex network of channels beneath an Antarctic ice shelf
Ice shelves play an important role in stabilizing the interior grounded ice of the large ice sheets. The thinning of major ice shelves observed in recent years, possibly in connection to warmer ocean waters coming into contact with the ice-shelf base, has focused attention on the ice-ocean interface...
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ftawi:oai:epic.awi.de:42237 2024-09-15T17:43:41+00:00 Complex network of channels beneath an Antarctic ice shelf Langley, Kirsty von Deschwanden, A. Kohler, Jack Sinisalo, A. Matsuoka, K Hattermann, Tore Humbert, Angelika Nøst, O. A. Isaksson, E. 2014 https://epic.awi.de/id/eprint/42237/ https://hdl.handle.net/10013/epic.48960 unknown Wiley Langley, K. , von Deschwanden, A. , Kohler, J. , Sinisalo, A. , Matsuoka, K. , Hattermann, T. , Humbert, A. , Nøst, O. A. and Isaksson, E. (2014) Complex network of channels beneath an Antarctic ice shelf , Geophysical Research Letters, 41 (4), pp. 1209-1215 . doi:10.1002/2013GL058947 <https://doi.org/10.1002/2013GL058947> , hdl:10013/epic.48960 EPIC3Geophysical Research Letters, Wiley, 41(4), pp. 1209-1215, ISSN: 0094-8276 Article isiRev 2014 ftawi https://doi.org/10.1002/2013GL058947 2024-06-24T04:15:36Z Ice shelves play an important role in stabilizing the interior grounded ice of the large ice sheets. The thinning of major ice shelves observed in recent years, possibly in connection to warmer ocean waters coming into contact with the ice-shelf base, has focused attention on the ice-ocean interface. Here we reveal a complex network of sub ice-shelf channels under the Fimbul Ice Shelf, Antarctica, mapped using ground-penetrating radar over a 100 km2 grid. The channels are 300–500 m wide and 50 m high, among the narrowest of any reported. Observing narrow channels beneath an ice shelf that is mainly surrounded by cold ocean waters, with temperatures close to the surface freezing point, shows that channelized basal melting is not restricted to rapidly melting ice shelves, indicating that spatial melt patterns around Antarctica are likely to vary on scales that are not yet incorporated in ice-ocean models. Article in Journal/Newspaper Antarc* Antarctic Antarctica Fimbul Ice Shelf Ice Shelf Ice Shelves Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Geophysical Research Letters 41 4 1209 1215 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Ice shelves play an important role in stabilizing the interior grounded ice of the large ice sheets. The thinning of major ice shelves observed in recent years, possibly in connection to warmer ocean waters coming into contact with the ice-shelf base, has focused attention on the ice-ocean interface. Here we reveal a complex network of sub ice-shelf channels under the Fimbul Ice Shelf, Antarctica, mapped using ground-penetrating radar over a 100 km2 grid. The channels are 300–500 m wide and 50 m high, among the narrowest of any reported. Observing narrow channels beneath an ice shelf that is mainly surrounded by cold ocean waters, with temperatures close to the surface freezing point, shows that channelized basal melting is not restricted to rapidly melting ice shelves, indicating that spatial melt patterns around Antarctica are likely to vary on scales that are not yet incorporated in ice-ocean models. |
format |
Article in Journal/Newspaper |
author |
Langley, Kirsty von Deschwanden, A. Kohler, Jack Sinisalo, A. Matsuoka, K Hattermann, Tore Humbert, Angelika Nøst, O. A. Isaksson, E. |
spellingShingle |
Langley, Kirsty von Deschwanden, A. Kohler, Jack Sinisalo, A. Matsuoka, K Hattermann, Tore Humbert, Angelika Nøst, O. A. Isaksson, E. Complex network of channels beneath an Antarctic ice shelf |
author_facet |
Langley, Kirsty von Deschwanden, A. Kohler, Jack Sinisalo, A. Matsuoka, K Hattermann, Tore Humbert, Angelika Nøst, O. A. Isaksson, E. |
author_sort |
Langley, Kirsty |
title |
Complex network of channels beneath an Antarctic ice shelf |
title_short |
Complex network of channels beneath an Antarctic ice shelf |
title_full |
Complex network of channels beneath an Antarctic ice shelf |
title_fullStr |
Complex network of channels beneath an Antarctic ice shelf |
title_full_unstemmed |
Complex network of channels beneath an Antarctic ice shelf |
title_sort |
complex network of channels beneath an antarctic ice shelf |
publisher |
Wiley |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/42237/ https://hdl.handle.net/10013/epic.48960 |
genre |
Antarc* Antarctic Antarctica Fimbul Ice Shelf Ice Shelf Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctica Fimbul Ice Shelf Ice Shelf Ice Shelves |
op_source |
EPIC3Geophysical Research Letters, Wiley, 41(4), pp. 1209-1215, ISSN: 0094-8276 |
op_relation |
Langley, K. , von Deschwanden, A. , Kohler, J. , Sinisalo, A. , Matsuoka, K. , Hattermann, T. , Humbert, A. , Nøst, O. A. and Isaksson, E. (2014) Complex network of channels beneath an Antarctic ice shelf , Geophysical Research Letters, 41 (4), pp. 1209-1215 . doi:10.1002/2013GL058947 <https://doi.org/10.1002/2013GL058947> , hdl:10013/epic.48960 |
op_doi |
https://doi.org/10.1002/2013GL058947 |
container_title |
Geophysical Research Letters |
container_volume |
41 |
container_issue |
4 |
container_start_page |
1209 |
op_container_end_page |
1215 |
_version_ |
1810490777929777152 |