(Table 3) Basal melting rates under the Amery Ice Shelf, East Antarctica
The basal melting and freezing rates under the Amery Ice Shelf, East Antarctica, are evaluated, and their spatial distributions mapped. Ice velocity, surface elevation and accumulation rate datasets are employed in the analysis, along with a column-averaged ice density model. Our analysis shows that...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.841714 2024-09-15T17:38:41+00:00 (Table 3) Basal melting rates under the Amery Ice Shelf, East Antarctica Wen, Jiahong Wang, Yafeng Wang, Weili Jezek, Kenneth C Liu, Hongxing Allison, Ian MEDIAN LATITUDE: -70.497287 * MEDIAN LONGITUDE: 70.264020 * SOUTH-BOUND LATITUDE: -73.194000 * WEST-BOUND LONGITUDE: 67.171300 * NORTH-BOUND LATITUDE: -68.694200 * EAST-BOUND LONGITUDE: 73.481600 2010 text/tab-separated-values, 152 data points https://doi.pangaea.de/10.1594/PANGAEA.841714 https://doi.org/10.1594/PANGAEA.841714 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.841714 https://doi.org/10.1594/PANGAEA.841714 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Wen, Jiahong; Wang, Yafeng; Wang, Weili; Jezek, Kenneth C; Liu, Hongxing; Allison, Ian (2010): Basal melting and freezing under the Amery Ice Shelf, East Antarctica. Journal of Glaciology, 56(195), 81-90, https://doi.org/10.3189/002214310791190820 AmeryIceShelf Calculated East Antarctica Identification International Polar Year (2007-2008) IPY LATITUDE LONGITUDE Melt rate MULT Multiple investigations dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.84171410.3189/002214310791190820 2024-07-24T02:31:33Z The basal melting and freezing rates under the Amery Ice Shelf, East Antarctica, are evaluated, and their spatial distributions mapped. Ice velocity, surface elevation and accumulation rate datasets are employed in the analysis, along with a column-averaged ice density model. Our analysis shows that the total area of basal melting is 34 700 km**2, with a total annual melt of 62.5 ± 9.3 Gt and an average melting rate of 1.8 ± 0.3 m/a. Basal freezing mainly occurs in the northwestern part of the ice shelf, over a total area of 26100 km**2 and with a maximum freezing rate of 2.4 ± 0.4 m/a. The total marine ice that accretes to the ice-shelf base is estimated to be 16.2 ± 2.4 Gt/a. Using a redefined grounding line and geometry of the Amery Ice Shelf, we estimate the net melt over the ice-shelf base is about 46.4 ± 6.9 Gt/a, which is higher than previous modeling and oceanographic estimates. Net basal melting accounts for about half of the total ice-shelf mass loss, with the rest being from iceberg discharge. Our basal melting and freezing distribution map provides a scientific basis for quantitative analysis of ice-ocean interaction at the ice-shelf-ocean interface. Dataset Amery Ice Shelf Antarc* Antarctica Antarctica Journal East Antarctica Ice Shelf International Polar Year IPY Journal of Glaciology PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(67.171300,73.481600,-68.694200,-73.194000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AmeryIceShelf Calculated East Antarctica Identification International Polar Year (2007-2008) IPY LATITUDE LONGITUDE Melt rate MULT Multiple investigations |
spellingShingle |
AmeryIceShelf Calculated East Antarctica Identification International Polar Year (2007-2008) IPY LATITUDE LONGITUDE Melt rate MULT Multiple investigations Wen, Jiahong Wang, Yafeng Wang, Weili Jezek, Kenneth C Liu, Hongxing Allison, Ian (Table 3) Basal melting rates under the Amery Ice Shelf, East Antarctica |
topic_facet |
AmeryIceShelf Calculated East Antarctica Identification International Polar Year (2007-2008) IPY LATITUDE LONGITUDE Melt rate MULT Multiple investigations |
description |
The basal melting and freezing rates under the Amery Ice Shelf, East Antarctica, are evaluated, and their spatial distributions mapped. Ice velocity, surface elevation and accumulation rate datasets are employed in the analysis, along with a column-averaged ice density model. Our analysis shows that the total area of basal melting is 34 700 km**2, with a total annual melt of 62.5 ± 9.3 Gt and an average melting rate of 1.8 ± 0.3 m/a. Basal freezing mainly occurs in the northwestern part of the ice shelf, over a total area of 26100 km**2 and with a maximum freezing rate of 2.4 ± 0.4 m/a. The total marine ice that accretes to the ice-shelf base is estimated to be 16.2 ± 2.4 Gt/a. Using a redefined grounding line and geometry of the Amery Ice Shelf, we estimate the net melt over the ice-shelf base is about 46.4 ± 6.9 Gt/a, which is higher than previous modeling and oceanographic estimates. Net basal melting accounts for about half of the total ice-shelf mass loss, with the rest being from iceberg discharge. Our basal melting and freezing distribution map provides a scientific basis for quantitative analysis of ice-ocean interaction at the ice-shelf-ocean interface. |
format |
Dataset |
author |
Wen, Jiahong Wang, Yafeng Wang, Weili Jezek, Kenneth C Liu, Hongxing Allison, Ian |
author_facet |
Wen, Jiahong Wang, Yafeng Wang, Weili Jezek, Kenneth C Liu, Hongxing Allison, Ian |
author_sort |
Wen, Jiahong |
title |
(Table 3) Basal melting rates under the Amery Ice Shelf, East Antarctica |
title_short |
(Table 3) Basal melting rates under the Amery Ice Shelf, East Antarctica |
title_full |
(Table 3) Basal melting rates under the Amery Ice Shelf, East Antarctica |
title_fullStr |
(Table 3) Basal melting rates under the Amery Ice Shelf, East Antarctica |
title_full_unstemmed |
(Table 3) Basal melting rates under the Amery Ice Shelf, East Antarctica |
title_sort |
(table 3) basal melting rates under the amery ice shelf, east antarctica |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.841714 https://doi.org/10.1594/PANGAEA.841714 |
op_coverage |
MEDIAN LATITUDE: -70.497287 * MEDIAN LONGITUDE: 70.264020 * SOUTH-BOUND LATITUDE: -73.194000 * WEST-BOUND LONGITUDE: 67.171300 * NORTH-BOUND LATITUDE: -68.694200 * EAST-BOUND LONGITUDE: 73.481600 |
long_lat |
ENVELOPE(67.171300,73.481600,-68.694200,-73.194000) |
genre |
Amery Ice Shelf Antarc* Antarctica Antarctica Journal East Antarctica Ice Shelf International Polar Year IPY Journal of Glaciology |
genre_facet |
Amery Ice Shelf Antarc* Antarctica Antarctica Journal East Antarctica Ice Shelf International Polar Year IPY Journal of Glaciology |
op_source |
Supplement to: Wen, Jiahong; Wang, Yafeng; Wang, Weili; Jezek, Kenneth C; Liu, Hongxing; Allison, Ian (2010): Basal melting and freezing under the Amery Ice Shelf, East Antarctica. Journal of Glaciology, 56(195), 81-90, https://doi.org/10.3189/002214310791190820 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.841714 https://doi.org/10.1594/PANGAEA.841714 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.84171410.3189/002214310791190820 |
_version_ |
1810474754594832384 |