Responses of sub-ice platelet layer thickening rate and frazil-ice concentration to variations in ice-shelf water supercooling in McMurdo Sound, Antarctica
Persistent outflow of supercooled ice-shelf water (ISW) from beneath McMurdo Ice Shelf creates a rapidly growing sub-ice platelet layer (SIPL) with a unique crystallographic structure under the sea ice in McMurdo Sound, Antarctica. A vertically modified frazil-ice-laden ISW plume model that encapsul...
Published in: | The Cryosphere |
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Online Access: | https://doi.org/10.5194/tc-13-265-2019 https://tc.copernicus.org/articles/13/265/2019/ |
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ftcopernicus:oai:publications.copernicus.org:tc70109 2023-05-15T13:55:28+02:00 Responses of sub-ice platelet layer thickening rate and frazil-ice concentration to variations in ice-shelf water supercooling in McMurdo Sound, Antarctica Cheng, Chen Jenkins, Adrian Holland, Paul R. Wang, Zhaomin Liu, Chengyan Xia, Ruibin 2019-01-29 application/pdf https://doi.org/10.5194/tc-13-265-2019 https://tc.copernicus.org/articles/13/265/2019/ eng eng doi:10.5194/tc-13-265-2019 https://tc.copernicus.org/articles/13/265/2019/ eISSN: 1994-0424 Text 2019 ftcopernicus https://doi.org/10.5194/tc-13-265-2019 2020-07-20T16:22:57Z Persistent outflow of supercooled ice-shelf water (ISW) from beneath McMurdo Ice Shelf creates a rapidly growing sub-ice platelet layer (SIPL) with a unique crystallographic structure under the sea ice in McMurdo Sound, Antarctica. A vertically modified frazil-ice-laden ISW plume model that encapsulates the combined non-linear effects of the vertical distributions of supercooling and frazil concentration on frazil-ice growth is applied to McMurdo Sound and is shown to reproduce the observed ISW supercooling and SIPL distributions. Using this model, the dependence of the SIPL thickening rate and depth-averaged frazil-ice concentration on ISW supercooling in McMurdo Sound is investigated and found to be predominantly controlled by the vertical distribution of frazil concentration. The complex dependence on frazil concentration highlights the need to improve frazil-ice observations within the sea-ice–ocean boundary layer in McMurdo Sound. Text Antarc* Antarctica Ice Shelf McMurdo Ice Shelf McMurdo Sound Sea ice Copernicus Publications: E-Journals McMurdo Ice Shelf ENVELOPE(166.500,166.500,-78.000,-78.000) McMurdo Sound The Cryosphere 13 1 265 280 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Persistent outflow of supercooled ice-shelf water (ISW) from beneath McMurdo Ice Shelf creates a rapidly growing sub-ice platelet layer (SIPL) with a unique crystallographic structure under the sea ice in McMurdo Sound, Antarctica. A vertically modified frazil-ice-laden ISW plume model that encapsulates the combined non-linear effects of the vertical distributions of supercooling and frazil concentration on frazil-ice growth is applied to McMurdo Sound and is shown to reproduce the observed ISW supercooling and SIPL distributions. Using this model, the dependence of the SIPL thickening rate and depth-averaged frazil-ice concentration on ISW supercooling in McMurdo Sound is investigated and found to be predominantly controlled by the vertical distribution of frazil concentration. The complex dependence on frazil concentration highlights the need to improve frazil-ice observations within the sea-ice–ocean boundary layer in McMurdo Sound. |
format |
Text |
author |
Cheng, Chen Jenkins, Adrian Holland, Paul R. Wang, Zhaomin Liu, Chengyan Xia, Ruibin |
spellingShingle |
Cheng, Chen Jenkins, Adrian Holland, Paul R. Wang, Zhaomin Liu, Chengyan Xia, Ruibin Responses of sub-ice platelet layer thickening rate and frazil-ice concentration to variations in ice-shelf water supercooling in McMurdo Sound, Antarctica |
author_facet |
Cheng, Chen Jenkins, Adrian Holland, Paul R. Wang, Zhaomin Liu, Chengyan Xia, Ruibin |
author_sort |
Cheng, Chen |
title |
Responses of sub-ice platelet layer thickening rate and frazil-ice concentration to variations in ice-shelf water supercooling in McMurdo Sound, Antarctica |
title_short |
Responses of sub-ice platelet layer thickening rate and frazil-ice concentration to variations in ice-shelf water supercooling in McMurdo Sound, Antarctica |
title_full |
Responses of sub-ice platelet layer thickening rate and frazil-ice concentration to variations in ice-shelf water supercooling in McMurdo Sound, Antarctica |
title_fullStr |
Responses of sub-ice platelet layer thickening rate and frazil-ice concentration to variations in ice-shelf water supercooling in McMurdo Sound, Antarctica |
title_full_unstemmed |
Responses of sub-ice platelet layer thickening rate and frazil-ice concentration to variations in ice-shelf water supercooling in McMurdo Sound, Antarctica |
title_sort |
responses of sub-ice platelet layer thickening rate and frazil-ice concentration to variations in ice-shelf water supercooling in mcmurdo sound, antarctica |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-13-265-2019 https://tc.copernicus.org/articles/13/265/2019/ |
long_lat |
ENVELOPE(166.500,166.500,-78.000,-78.000) |
geographic |
McMurdo Ice Shelf McMurdo Sound |
geographic_facet |
McMurdo Ice Shelf McMurdo Sound |
genre |
Antarc* Antarctica Ice Shelf McMurdo Ice Shelf McMurdo Sound Sea ice |
genre_facet |
Antarc* Antarctica Ice Shelf McMurdo Ice Shelf McMurdo Sound Sea ice |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-13-265-2019 https://tc.copernicus.org/articles/13/265/2019/ |
op_doi |
https://doi.org/10.5194/tc-13-265-2019 |
container_title |
The Cryosphere |
container_volume |
13 |
container_issue |
1 |
container_start_page |
265 |
op_container_end_page |
280 |
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1766262118607224832 |