Structure of snow-ice dams of the outburst lakes in the Broknes Peninsula (Larsemann Hills, East Antarctica) based on groundpenetrating radar data
During the summer field season of the 65th Russian Antarctic Expedition a research aimed at studying the structure of the snow-ice dams of the Lakes Progress and Discussion (Larsemann Hills, East Antarctica), which are characterized with annual outburst floods, was carried out. Survey was performed u...
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2021
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Online Access: | https://doi.org/10.31857/S2076673421020089 https://doaj.org/article/f950fd750e6f4e2c9131575bc34b2adf |
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ftdoajarticles:oai:doaj.org/article:f950fd750e6f4e2c9131575bc34b2adf 2023-05-15T14:03:03+02:00 Structure of snow-ice dams of the outburst lakes in the Broknes Peninsula (Larsemann Hills, East Antarctica) based on groundpenetrating radar data S. D. Grigoreva E. R. Kiniabaeva M. R. Kuznetsova S. V. Popov M. P. Kashkevich 2021-05-01T00:00:00Z https://doi.org/10.31857/S2076673421020089 https://doaj.org/article/f950fd750e6f4e2c9131575bc34b2adf RU rus Nauka https://ice-snow.igras.ru/jour/article/view/896 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.31857/S2076673421020089 https://doaj.org/article/f950fd750e6f4e2c9131575bc34b2adf Лëд и снег, Vol 61, Iss 2, Pp 291-300 (2021) восточная антарктида георадарное профилирование полуостров брокнес прорывные паводки холмы ларсеманн Science Q article 2021 ftdoajarticles https://doi.org/10.31857/S2076673421020089 2023-03-19T01:40:11Z During the summer field season of the 65th Russian Antarctic Expedition a research aimed at studying the structure of the snow-ice dams of the Lakes Progress and Discussion (Larsemann Hills, East Antarctica), which are characterized with annual outburst floods, was carried out. Survey was performed using groundpenetrating radar sounding complemented with noncore drilling and analysis of the aerial photo data acquired with unmanned aerial vehicle during the last field seasons. The results show that location of the waterways, which occur during the outbursts of the both lakes, does not change significantly year in year out and fits a linear depression in basement topography under the dam and a following flexure of the ice layer. During the winter period, the opened channels are being filled with snow, and thereby a natural soſtened zone is being formed. Further outburst flood propagates mainly within this zone. Monitoring survey of the snowi-ce dam of the Progress Lake during the summer period showed that destruction of the dam does not happen rapidly when the outburst takes place, but begins a few weeks before it with gradual filtration within the snow layer. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Антарктида Directory of Open Access Journals: DOAJ Articles Antarctic East Antarctica Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Broknes ENVELOPE(76.346,76.346,-69.391,-69.391) Progress Lake ENVELOPE(76.389,76.389,-69.402,-69.402) Ice and Snow 61 2 291 300 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
восточная антарктида георадарное профилирование полуостров брокнес прорывные паводки холмы ларсеманн Science Q |
spellingShingle |
восточная антарктида георадарное профилирование полуостров брокнес прорывные паводки холмы ларсеманн Science Q S. D. Grigoreva E. R. Kiniabaeva M. R. Kuznetsova S. V. Popov M. P. Kashkevich Structure of snow-ice dams of the outburst lakes in the Broknes Peninsula (Larsemann Hills, East Antarctica) based on groundpenetrating radar data |
topic_facet |
восточная антарктида георадарное профилирование полуостров брокнес прорывные паводки холмы ларсеманн Science Q |
description |
During the summer field season of the 65th Russian Antarctic Expedition a research aimed at studying the structure of the snow-ice dams of the Lakes Progress and Discussion (Larsemann Hills, East Antarctica), which are characterized with annual outburst floods, was carried out. Survey was performed using groundpenetrating radar sounding complemented with noncore drilling and analysis of the aerial photo data acquired with unmanned aerial vehicle during the last field seasons. The results show that location of the waterways, which occur during the outbursts of the both lakes, does not change significantly year in year out and fits a linear depression in basement topography under the dam and a following flexure of the ice layer. During the winter period, the opened channels are being filled with snow, and thereby a natural soſtened zone is being formed. Further outburst flood propagates mainly within this zone. Monitoring survey of the snowi-ce dam of the Progress Lake during the summer period showed that destruction of the dam does not happen rapidly when the outburst takes place, but begins a few weeks before it with gradual filtration within the snow layer. |
format |
Article in Journal/Newspaper |
author |
S. D. Grigoreva E. R. Kiniabaeva M. R. Kuznetsova S. V. Popov M. P. Kashkevich |
author_facet |
S. D. Grigoreva E. R. Kiniabaeva M. R. Kuznetsova S. V. Popov M. P. Kashkevich |
author_sort |
S. D. Grigoreva |
title |
Structure of snow-ice dams of the outburst lakes in the Broknes Peninsula (Larsemann Hills, East Antarctica) based on groundpenetrating radar data |
title_short |
Structure of snow-ice dams of the outburst lakes in the Broknes Peninsula (Larsemann Hills, East Antarctica) based on groundpenetrating radar data |
title_full |
Structure of snow-ice dams of the outburst lakes in the Broknes Peninsula (Larsemann Hills, East Antarctica) based on groundpenetrating radar data |
title_fullStr |
Structure of snow-ice dams of the outburst lakes in the Broknes Peninsula (Larsemann Hills, East Antarctica) based on groundpenetrating radar data |
title_full_unstemmed |
Structure of snow-ice dams of the outburst lakes in the Broknes Peninsula (Larsemann Hills, East Antarctica) based on groundpenetrating radar data |
title_sort |
structure of snow-ice dams of the outburst lakes in the broknes peninsula (larsemann hills, east antarctica) based on groundpenetrating radar data |
publisher |
Nauka |
publishDate |
2021 |
url |
https://doi.org/10.31857/S2076673421020089 https://doaj.org/article/f950fd750e6f4e2c9131575bc34b2adf |
long_lat |
ENVELOPE(76.217,76.217,-69.400,-69.400) ENVELOPE(76.346,76.346,-69.391,-69.391) ENVELOPE(76.389,76.389,-69.402,-69.402) |
geographic |
Antarctic East Antarctica Larsemann Hills Broknes Progress Lake |
geographic_facet |
Antarctic East Antarctica Larsemann Hills Broknes Progress Lake |
genre |
Antarc* Antarctic Antarctica East Antarctica Антарктида |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Антарктида |
op_source |
Лëд и снег, Vol 61, Iss 2, Pp 291-300 (2021) |
op_relation |
https://ice-snow.igras.ru/jour/article/view/896 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.31857/S2076673421020089 https://doaj.org/article/f950fd750e6f4e2c9131575bc34b2adf |
op_doi |
https://doi.org/10.31857/S2076673421020089 |
container_title |
Ice and Snow |
container_volume |
61 |
container_issue |
2 |
container_start_page |
291 |
op_container_end_page |
300 |
_version_ |
1766273523419971584 |