Late Pleistocene glaciation and retreat of ice sheet on the shelf of the South Orkney Plateau, West Antarctica
The research aims to provide insight into reconstruction of the Late Pleistocene glaciations and ice retreat that followed the Last Glacial Maximum. The study is based on multi-channel seismic profiling and multibeam survey conducted on the shelf during the 63-rd Russian Antarctic Expedition (2018)...
Published in: | Ice and Snow |
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Main Authors: | , , , |
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Format: | Article in Journal/Newspaper |
Language: | Russian |
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IGRAS
2021
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Online Access: | https://ice-snow.igras.ru/jour/article/view/935 https://doi.org/10.31857/S2076673421040109 |
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Ice and Snow (E-Journal) |
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Russian |
topic |
Antarctic South-Orkney Plateau shelf multibeam survey seismic profiling bathymetry subglacial land forms glaciation ice retreat Антарктика Южно-Оркнейское плато шельф многолучевое эхолотирование сейсморазведка батиметрия морена плейстоцен оледенение дегляциация |
spellingShingle |
Antarctic South-Orkney Plateau shelf multibeam survey seismic profiling bathymetry subglacial land forms glaciation ice retreat Антарктика Южно-Оркнейское плато шельф многолучевое эхолотирование сейсморазведка батиметрия морена плейстоцен оледенение дегляциация G. Leitchenkov L. E. Bazhenova A. Г. Лейченков Л. Е. Баженова А. Late Pleistocene glaciation and retreat of ice sheet on the shelf of the South Orkney Plateau, West Antarctica |
topic_facet |
Antarctic South-Orkney Plateau shelf multibeam survey seismic profiling bathymetry subglacial land forms glaciation ice retreat Антарктика Южно-Оркнейское плато шельф многолучевое эхолотирование сейсморазведка батиметрия морена плейстоцен оледенение дегляциация |
description |
The research aims to provide insight into reconstruction of the Late Pleistocene glaciations and ice retreat that followed the Last Glacial Maximum. The study is based on multi-channel seismic profiling and multibeam survey conducted on the shelf during the 63-rd Russian Antarctic Expedition (2018) on RV «Akademik Alexander Karpinsky». The 560-channel, 7000-m-long streamer and the Atlas Hydrosweep MD-3/30 multibeam echo-sounder were used for seismic and multibeam survey, respectively. In addition, previously collected seismic data available from the Antarctic Seismic Data Library System and bathymetry data from the «International Bathymetry Chart of the Southern Ocean» (IBCSO) Project were involved for interpretation. The multibeam survey was carried out within the Signy Trough and its flanks with depths ranging from 180 to 400 m, and covered the area of about 1500 km2. The data were collected along 43 profiles spaced at 750 m to ensure enough overlap between swaths. Variety of submarine glacial landforms formed by grounded ice was identified on shelf of the South Orkney Plateau with use of seismic and multibeam data. The most prominent of these features is the large terminal moraine at the middle shelf (previously described as the mid-shelf break) marking the greatest ice extent at the LGM. Oceanward of the large terminal moraine, the plateau-like feature (delineated by 350 and 425 m isobaths) with relatively steep outer slope is recognized from seismic data and interpreted as the distal terminal moraine formed during the pre-LGM Pleistocene glaciation. Within the Signy Trough, submarine glacial landforms mapped by multibeam survey, reflect ice retreat after the LGM; these landforms include: subglacial lineation at the western flank of the northern Signy Trough indicating fast flowing grounded ice, transverse recessional moraine ridges, lateral shear moraine on the western flank and lateral marginal moraine on the eastern flank of the Trough, two grounding zone wedges, streamlined features (drumlins) and an ... |
author2 |
Field survey on the South Orkney Plateau was carried out within the Federal Project of the Agency Federal Agency for Mineral Resources № 049-00018-19-00. Scientific interpretation and preparation of paper were performed with the support of the Russian Foundation for Basic Research, Project № 19-05-00858 «Late Cenozoic Environmental Changes in the north-western Weddell Sea (Antarctica)». Полевые работы на шельфе Южно-Оркнейского плато проводились в рамках Государственного задания Федерального агентства по недропользованию № 049-00018-19-00 от 11 января 2019 г. на 2019 г. и плановый период 2020 и 2021 гг. Интерпретация полученных данных и подготовка публикации выполнена при поддержке гранта РФФИ № 19-05-00858 «Изменение природной среды северо-западной части моря Уэдделла (Антарктика) в позднем кайнозое» |
format |
Article in Journal/Newspaper |
author |
G. Leitchenkov L. E. Bazhenova A. Г. Лейченков Л. Е. Баженова А. |
author_facet |
G. Leitchenkov L. E. Bazhenova A. Г. Лейченков Л. Е. Баженова А. |
author_sort |
G. Leitchenkov L. |
title |
Late Pleistocene glaciation and retreat of ice sheet on the shelf of the South Orkney Plateau, West Antarctica |
title_short |
Late Pleistocene glaciation and retreat of ice sheet on the shelf of the South Orkney Plateau, West Antarctica |
title_full |
Late Pleistocene glaciation and retreat of ice sheet on the shelf of the South Orkney Plateau, West Antarctica |
title_fullStr |
Late Pleistocene glaciation and retreat of ice sheet on the shelf of the South Orkney Plateau, West Antarctica |
title_full_unstemmed |
Late Pleistocene glaciation and retreat of ice sheet on the shelf of the South Orkney Plateau, West Antarctica |
title_sort |
late pleistocene glaciation and retreat of ice sheet on the shelf of the south orkney plateau, west antarctica |
publisher |
IGRAS |
publishDate |
2021 |
url |
https://ice-snow.igras.ru/jour/article/view/935 https://doi.org/10.31857/S2076673421040109 |
long_lat |
ENVELOPE(-44.157,-44.157,-60.690,-60.690) |
geographic |
Antarctic Southern Ocean The Antarctic West Antarctica South Orkney Plateau |
geographic_facet |
Antarctic Southern Ocean The Antarctic West Antarctica South Orkney Plateau |
genre |
Antarc* Antarctic Antarctica Ice Sheet Southern Ocean West Antarctica Антарктика |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Southern Ocean West Antarctica Антарктика |
op_source |
Ice and Snow; Том 61, № 4 (2021); 571-586 Лёд и Снег; Том 61, № 4 (2021); 571-586 2412-3765 2076-6734 |
op_relation |
https://ice-snow.igras.ru/jour/article/view/935/590 https://ice-snow.igras.ru/jour/article/view/935 doi:10.31857/S2076673421040109 |
op_rights |
Authors who publish with this journal agree to the following terms:Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). Авторы, публикующие статьи в данном журнале, соглашаются на следующее:Авторы сохраняют за собой авторские права и предоставляют журналу право первой публикации работы, которая по истечении 6 месяцев после публикации автоматически лицензируется на условиях Creative Commons Attribution License , что позволяет другим распространять данную работу с обязательным сохранением ссылок на авторов оригинальной работы и оригинальную публикацию в этом журнале.Редакция журнала будет размещать принятую для публикации статью на сайте журнала до выхода её в свет (после утверждения к печати редколлегией журнала). Авторы также имеют право размещать их работу в сети Интернет (например в институтском хранилище или персональном сайте) до и во время процесса рассмотрения ее данным журналом, так как это может привести к продуктивному обсуждению и большему количеству ссылок на данную работу (См. The Effect of Open Access). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.31857/S2076673421040109 |
container_title |
Ice and Snow |
container_volume |
61 |
container_issue |
4 |
container_start_page |
571 |
op_container_end_page |
586 |
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1766199351330209792 |
spelling |
ftjias:oai:oai.ice.elpub.ru:article/935 2023-05-15T13:44:15+02:00 Late Pleistocene glaciation and retreat of ice sheet on the shelf of the South Orkney Plateau, West Antarctica Позднеплейстоценовое оледенение и отступание ледникового покрова на шельфе Южно-Оркнейского плато, Западная Антарктика G. Leitchenkov L. E. Bazhenova A. Г. Лейченков Л. Е. Баженова А. Field survey on the South Orkney Plateau was carried out within the Federal Project of the Agency Federal Agency for Mineral Resources № 049-00018-19-00. Scientific interpretation and preparation of paper were performed with the support of the Russian Foundation for Basic Research, Project № 19-05-00858 «Late Cenozoic Environmental Changes in the north-western Weddell Sea (Antarctica)». Полевые работы на шельфе Южно-Оркнейского плато проводились в рамках Государственного задания Федерального агентства по недропользованию № 049-00018-19-00 от 11 января 2019 г. на 2019 г. и плановый период 2020 и 2021 гг. Интерпретация полученных данных и подготовка публикации выполнена при поддержке гранта РФФИ № 19-05-00858 «Изменение природной среды северо-западной части моря Уэдделла (Антарктика) в позднем кайнозое» 2021-12-10 application/pdf https://ice-snow.igras.ru/jour/article/view/935 https://doi.org/10.31857/S2076673421040109 rus rus IGRAS https://ice-snow.igras.ru/jour/article/view/935/590 https://ice-snow.igras.ru/jour/article/view/935 doi:10.31857/S2076673421040109 Authors who publish with this journal agree to the following terms:Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). Авторы, публикующие статьи в данном журнале, соглашаются на следующее:Авторы сохраняют за собой авторские права и предоставляют журналу право первой публикации работы, которая по истечении 6 месяцев после публикации автоматически лицензируется на условиях Creative Commons Attribution License , что позволяет другим распространять данную работу с обязательным сохранением ссылок на авторов оригинальной работы и оригинальную публикацию в этом журнале.Редакция журнала будет размещать принятую для публикации статью на сайте журнала до выхода её в свет (после утверждения к печати редколлегией журнала). Авторы также имеют право размещать их работу в сети Интернет (например в институтском хранилище или персональном сайте) до и во время процесса рассмотрения ее данным журналом, так как это может привести к продуктивному обсуждению и большему количеству ссылок на данную работу (См. The Effect of Open Access). CC-BY Ice and Snow; Том 61, № 4 (2021); 571-586 Лёд и Снег; Том 61, № 4 (2021); 571-586 2412-3765 2076-6734 Antarctic South-Orkney Plateau shelf multibeam survey seismic profiling bathymetry subglacial land forms glaciation ice retreat Антарктика Южно-Оркнейское плато шельф многолучевое эхолотирование сейсморазведка батиметрия морена плейстоцен оледенение дегляциация info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftjias https://doi.org/10.31857/S2076673421040109 2022-12-20T13:30:01Z The research aims to provide insight into reconstruction of the Late Pleistocene glaciations and ice retreat that followed the Last Glacial Maximum. The study is based on multi-channel seismic profiling and multibeam survey conducted on the shelf during the 63-rd Russian Antarctic Expedition (2018) on RV «Akademik Alexander Karpinsky». The 560-channel, 7000-m-long streamer and the Atlas Hydrosweep MD-3/30 multibeam echo-sounder were used for seismic and multibeam survey, respectively. In addition, previously collected seismic data available from the Antarctic Seismic Data Library System and bathymetry data from the «International Bathymetry Chart of the Southern Ocean» (IBCSO) Project were involved for interpretation. The multibeam survey was carried out within the Signy Trough and its flanks with depths ranging from 180 to 400 m, and covered the area of about 1500 km2. The data were collected along 43 profiles spaced at 750 m to ensure enough overlap between swaths. Variety of submarine glacial landforms formed by grounded ice was identified on shelf of the South Orkney Plateau with use of seismic and multibeam data. The most prominent of these features is the large terminal moraine at the middle shelf (previously described as the mid-shelf break) marking the greatest ice extent at the LGM. Oceanward of the large terminal moraine, the plateau-like feature (delineated by 350 and 425 m isobaths) with relatively steep outer slope is recognized from seismic data and interpreted as the distal terminal moraine formed during the pre-LGM Pleistocene glaciation. Within the Signy Trough, submarine glacial landforms mapped by multibeam survey, reflect ice retreat after the LGM; these landforms include: subglacial lineation at the western flank of the northern Signy Trough indicating fast flowing grounded ice, transverse recessional moraine ridges, lateral shear moraine on the western flank and lateral marginal moraine on the eastern flank of the Trough, two grounding zone wedges, streamlined features (drumlins) and an ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Southern Ocean West Antarctica Антарктика Ice and Snow (E-Journal) Antarctic Southern Ocean The Antarctic West Antarctica South Orkney Plateau ENVELOPE(-44.157,-44.157,-60.690,-60.690) Ice and Snow 61 4 571 586 |