Channelized melting drives thinning under a rapidly melting Antarctic ice shelf
Ice shelves play a vital role in regulating loss of grounded ice and in supplying freshwater to coastal seas. However, melt variability within ice shelves is poorly constrained and may be instrumental in driving ice shelf imbalance and collapse. High-resolution altimetry measurements from 2010 to 20...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/518096/ https://nora.nerc.ac.uk/id/eprint/518096/1/Gourmelen_et_al-2017-Geophysical_Research_Letters.pdf https://doi.org/10.1002/2017GL074929 |
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ftnerc:oai:nora.nerc.ac.uk:518096 2023-05-15T13:49:34+02:00 Channelized melting drives thinning under a rapidly melting Antarctic ice shelf Gourmelen, Noel Goldberg, Dan N. Snow, Kate Henley, Sian F. Bingham, Robert G. Kimura, Satoshi Hogg, Anna E. Shepherd, Andrew Mouginot, Jeremie Lenaerts, Jan T. M. Ligtenberg, Stefan R. M. van de Berg, Willem Jan 2017-10-16 text http://nora.nerc.ac.uk/id/eprint/518096/ https://nora.nerc.ac.uk/id/eprint/518096/1/Gourmelen_et_al-2017-Geophysical_Research_Letters.pdf https://doi.org/10.1002/2017GL074929 en eng Wiley https://nora.nerc.ac.uk/id/eprint/518096/1/Gourmelen_et_al-2017-Geophysical_Research_Letters.pdf Gourmelen, Noel; Goldberg, Dan N.; Snow, Kate; Henley, Sian F.; Bingham, Robert G.; Kimura, Satoshi orcid:0000-0003-1689-1605 Hogg, Anna E.; Shepherd, Andrew; Mouginot, Jeremie; Lenaerts, Jan T. M.; Ligtenberg, Stefan R. M.; van de Berg, Willem Jan. 2017 Channelized melting drives thinning under a rapidly melting Antarctic ice shelf. Geophysical Research Letters, 44 (19). 9796-9804. https://doi.org/10.1002/2017GL074929 <https://doi.org/10.1002/2017GL074929> cc_by_4 CC-BY Publication - Article PeerReviewed 2017 ftnerc https://doi.org/10.1002/2017GL074929 2023-02-04T19:45:31Z Ice shelves play a vital role in regulating loss of grounded ice and in supplying freshwater to coastal seas. However, melt variability within ice shelves is poorly constrained and may be instrumental in driving ice shelf imbalance and collapse. High-resolution altimetry measurements from 2010 to 2016 show that Dotson Ice Shelf (DIS), West Antarctica, thins in response to basal melting focused along a single 5 km-wide and 60 km-long channel extending from the ice shelf's grounding zone to its calving front. If focused thinning continues at present rates, the channel will melt through, and the ice shelf collapse, within 40–50 years, almost two centuries before collapse is projected from the average thinning rate. Our findings provide evidence of basal melt-driven sub-ice shelf channel formation and its potential for accelerating the weakening of ice shelves. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dotson Ice Shelf Ice Shelf Ice Shelves West Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic West Antarctica Dotson Ice Shelf ENVELOPE(-112.367,-112.367,-74.400,-74.400) Long Channel ENVELOPE(-103.834,-103.834,59.750,59.750) Geophysical Research Letters 44 19 9796 9804 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Ice shelves play a vital role in regulating loss of grounded ice and in supplying freshwater to coastal seas. However, melt variability within ice shelves is poorly constrained and may be instrumental in driving ice shelf imbalance and collapse. High-resolution altimetry measurements from 2010 to 2016 show that Dotson Ice Shelf (DIS), West Antarctica, thins in response to basal melting focused along a single 5 km-wide and 60 km-long channel extending from the ice shelf's grounding zone to its calving front. If focused thinning continues at present rates, the channel will melt through, and the ice shelf collapse, within 40–50 years, almost two centuries before collapse is projected from the average thinning rate. Our findings provide evidence of basal melt-driven sub-ice shelf channel formation and its potential for accelerating the weakening of ice shelves. |
format |
Article in Journal/Newspaper |
author |
Gourmelen, Noel Goldberg, Dan N. Snow, Kate Henley, Sian F. Bingham, Robert G. Kimura, Satoshi Hogg, Anna E. Shepherd, Andrew Mouginot, Jeremie Lenaerts, Jan T. M. Ligtenberg, Stefan R. M. van de Berg, Willem Jan |
spellingShingle |
Gourmelen, Noel Goldberg, Dan N. Snow, Kate Henley, Sian F. Bingham, Robert G. Kimura, Satoshi Hogg, Anna E. Shepherd, Andrew Mouginot, Jeremie Lenaerts, Jan T. M. Ligtenberg, Stefan R. M. van de Berg, Willem Jan Channelized melting drives thinning under a rapidly melting Antarctic ice shelf |
author_facet |
Gourmelen, Noel Goldberg, Dan N. Snow, Kate Henley, Sian F. Bingham, Robert G. Kimura, Satoshi Hogg, Anna E. Shepherd, Andrew Mouginot, Jeremie Lenaerts, Jan T. M. Ligtenberg, Stefan R. M. van de Berg, Willem Jan |
author_sort |
Gourmelen, Noel |
title |
Channelized melting drives thinning under a rapidly melting Antarctic ice shelf |
title_short |
Channelized melting drives thinning under a rapidly melting Antarctic ice shelf |
title_full |
Channelized melting drives thinning under a rapidly melting Antarctic ice shelf |
title_fullStr |
Channelized melting drives thinning under a rapidly melting Antarctic ice shelf |
title_full_unstemmed |
Channelized melting drives thinning under a rapidly melting Antarctic ice shelf |
title_sort |
channelized melting drives thinning under a rapidly melting antarctic ice shelf |
publisher |
Wiley |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/518096/ https://nora.nerc.ac.uk/id/eprint/518096/1/Gourmelen_et_al-2017-Geophysical_Research_Letters.pdf https://doi.org/10.1002/2017GL074929 |
long_lat |
ENVELOPE(-112.367,-112.367,-74.400,-74.400) ENVELOPE(-103.834,-103.834,59.750,59.750) |
geographic |
Antarctic West Antarctica Dotson Ice Shelf Long Channel |
geographic_facet |
Antarctic West Antarctica Dotson Ice Shelf Long Channel |
genre |
Antarc* Antarctic Antarctica Dotson Ice Shelf Ice Shelf Ice Shelves West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Dotson Ice Shelf Ice Shelf Ice Shelves West Antarctica |
op_relation |
https://nora.nerc.ac.uk/id/eprint/518096/1/Gourmelen_et_al-2017-Geophysical_Research_Letters.pdf Gourmelen, Noel; Goldberg, Dan N.; Snow, Kate; Henley, Sian F.; Bingham, Robert G.; Kimura, Satoshi orcid:0000-0003-1689-1605 Hogg, Anna E.; Shepherd, Andrew; Mouginot, Jeremie; Lenaerts, Jan T. M.; Ligtenberg, Stefan R. M.; van de Berg, Willem Jan. 2017 Channelized melting drives thinning under a rapidly melting Antarctic ice shelf. Geophysical Research Letters, 44 (19). 9796-9804. https://doi.org/10.1002/2017GL074929 <https://doi.org/10.1002/2017GL074929> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/2017GL074929 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
19 |
container_start_page |
9796 |
op_container_end_page |
9804 |
_version_ |
1766251706911293440 |