Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow
The article provides phenomenological and experimental arguments that ice sheet surface fluctuation in Antarctica is mediated by ice velocity and subglacial water flow. To understand this link we use temporal coherence to refer to the comparison between vertical profile and a shifted profile along t...
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ftdoajarticles:oai:doaj.org/article:9806ea9b7f61415c823082dd1fdd679f 2023-05-15T14:13:29+02:00 Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow V. M. Kotlyakov L. N. Vasiliev A. B. Kachalin M. Yu. Moskalevsky A. S. Tyuflin 2015-04-01T00:00:00Z https://doi.org/10.15356/2076-6734-2013-4-5-12 https://doaj.org/article/9806ea9b7f61415c823082dd1fdd679f RU rus Nauka https://ice-snow.igras.ru/jour/article/view/126 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2013-4-5-12 https://doaj.org/article/9806ea9b7f61415c823082dd1fdd679f Лëд и снег, Vol 53, Iss 4, Pp 5-12 (2015) антарктида деформация когерентность подледниковые потоки воды скорость движения льда Science Q article 2015 ftdoajarticles https://doi.org/10.15356/2076-6734-2013-4-5-12 2023-03-19T01:40:13Z The article provides phenomenological and experimental arguments that ice sheet surface fluctuation in Antarctica is mediated by ice velocity and subglacial water flow. To understand this link we use temporal coherence to refer to the comparison between vertical profile and a shifted profile along the repeat ICESat track. A profile shift due to ice velocity is determined from cross-correlation between initial and shifted profiles. Ice velocity induced fluctuation in surface elevation and deformation of the vertical profile. The degree of coherence indicates a decrease in similarity of moving vertical profiles and their deformation. The water flow beneath the ice sheet and over the subglacial lakes generates irregular rise and fall of the surface. Observations in area of Dome A and its slope have revealed such behavior of surface, where the surface is placid and ice velocity is measly 2–5 m/y. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Антарктида Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Ice and Snow 124 4 5 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
антарктида деформация когерентность подледниковые потоки воды скорость движения льда Science Q |
spellingShingle |
антарктида деформация когерентность подледниковые потоки воды скорость движения льда Science Q V. M. Kotlyakov L. N. Vasiliev A. B. Kachalin M. Yu. Moskalevsky A. S. Tyuflin Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
topic_facet |
антарктида деформация когерентность подледниковые потоки воды скорость движения льда Science Q |
description |
The article provides phenomenological and experimental arguments that ice sheet surface fluctuation in Antarctica is mediated by ice velocity and subglacial water flow. To understand this link we use temporal coherence to refer to the comparison between vertical profile and a shifted profile along the repeat ICESat track. A profile shift due to ice velocity is determined from cross-correlation between initial and shifted profiles. Ice velocity induced fluctuation in surface elevation and deformation of the vertical profile. The degree of coherence indicates a decrease in similarity of moving vertical profiles and their deformation. The water flow beneath the ice sheet and over the subglacial lakes generates irregular rise and fall of the surface. Observations in area of Dome A and its slope have revealed such behavior of surface, where the surface is placid and ice velocity is measly 2–5 m/y. |
format |
Article in Journal/Newspaper |
author |
V. M. Kotlyakov L. N. Vasiliev A. B. Kachalin M. Yu. Moskalevsky A. S. Tyuflin |
author_facet |
V. M. Kotlyakov L. N. Vasiliev A. B. Kachalin M. Yu. Moskalevsky A. S. Tyuflin |
author_sort |
V. M. Kotlyakov |
title |
Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
title_short |
Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
title_full |
Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
title_fullStr |
Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
title_full_unstemmed |
Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
title_sort |
relationship of surface elevation changes of the antarctic ice sheet with ice movement and subglacial water flow |
publisher |
Nauka |
publishDate |
2015 |
url |
https://doi.org/10.15356/2076-6734-2013-4-5-12 https://doaj.org/article/9806ea9b7f61415c823082dd1fdd679f |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet Антарктида |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Антарктида |
op_source |
Лëд и снег, Vol 53, Iss 4, Pp 5-12 (2015) |
op_relation |
https://ice-snow.igras.ru/jour/article/view/126 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2013-4-5-12 https://doaj.org/article/9806ea9b7f61415c823082dd1fdd679f |
op_doi |
https://doi.org/10.15356/2076-6734-2013-4-5-12 |
container_title |
Ice and Snow |
container_volume |
124 |
container_issue |
4 |
container_start_page |
5 |
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1766285941611167744 |