Ice-Gouging Topography of the Exposed Aral Sea Bed

Ice gouging, or scouring, i.e., ice impact on the seabed, is a well-studied phenomenon in high-latitude seas. In the mid-latitudes, it remains one of the major geomorphic processes in freezing seas and large lakes. Research efforts concerning its patterns, drivers and intensity are scarce, and inclu...

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Published in:Remote Sensing
Main Authors: Stepan Maznev, Stanislav Ogorodov, Alisa Baranskaya, Aleksey Vergun, Vasiliy Arkhipov, Peter Bukharitsin
Format: Text
Language:English
Published: Multidisciplinary Digital Publishing Institute 2019
Subjects:
Online Access:https://doi.org/10.3390/rs11020113
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spelling ftmdpi:oai:mdpi.com:/2072-4292/11/2/113/ 2023-08-20T04:09:46+02:00 Ice-Gouging Topography of the Exposed Aral Sea Bed Stepan Maznev Stanislav Ogorodov Alisa Baranskaya Aleksey Vergun Vasiliy Arkhipov Peter Bukharitsin agris 2019-01-09 application/pdf https://doi.org/10.3390/rs11020113 EN eng Multidisciplinary Digital Publishing Institute Remote Sensing in Geology, Geomorphology and Hydrology https://dx.doi.org/10.3390/rs11020113 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 11; Issue 2; Pages: 113 Aral Sea ice gouging bottom topography ice scours remote sensing Text 2019 ftmdpi https://doi.org/10.3390/rs11020113 2023-07-31T21:57:32Z Ice gouging, or scouring, i.e., ice impact on the seabed, is a well-studied phenomenon in high-latitude seas. In the mid-latitudes, it remains one of the major geomorphic processes in freezing seas and large lakes. Research efforts concerning its patterns, drivers and intensity are scarce, and include aerial and geophysical studies of ice scours in the Northern Caspian Sea. This study aims to explain the origin of the recently discovered linear landforms on the exposed former Aral Sea bottom using remotely sensed data. We suggest that they are relict ice gouges, analogous to the modern ice scours of the Northern Caspian, Kara and other seas and lakes, previously studied by side scan sonar (SSS) surveys. Their average dimensions, from 3 to 90 m in width and from hundreds to thousands of meters in length, and spatial distribution were derived from satellite imagery interpretation and structure from motion-processing of UAV (unmanned aerial vehicle) images. Ice scouring features are virtually omnipresent at certain seabed sections, evidencing high ice gouging intensity in mid-latitude climates. Their greatest density is observed in the central part of the former East Aral Sea. The majority of contemporary ice gouges appeared during the rapid Aral Sea level fall between 1980 and the mid-1990s. Since then, the lake has almost completely drained, providing a unique opportunity for direct studies of exposed ice gouges using both in situ and remote-sensing techniques. These data could add to our current understanding of the scales and drivers of ice impact on the bottom of shallow seas and lakes. Text Sea ice MDPI Open Access Publishing Remote Sensing 11 2 113
institution Open Polar
collection MDPI Open Access Publishing
op_collection_id ftmdpi
language English
topic Aral Sea
ice gouging
bottom topography
ice scours
remote sensing
spellingShingle Aral Sea
ice gouging
bottom topography
ice scours
remote sensing
Stepan Maznev
Stanislav Ogorodov
Alisa Baranskaya
Aleksey Vergun
Vasiliy Arkhipov
Peter Bukharitsin
Ice-Gouging Topography of the Exposed Aral Sea Bed
topic_facet Aral Sea
ice gouging
bottom topography
ice scours
remote sensing
description Ice gouging, or scouring, i.e., ice impact on the seabed, is a well-studied phenomenon in high-latitude seas. In the mid-latitudes, it remains one of the major geomorphic processes in freezing seas and large lakes. Research efforts concerning its patterns, drivers and intensity are scarce, and include aerial and geophysical studies of ice scours in the Northern Caspian Sea. This study aims to explain the origin of the recently discovered linear landforms on the exposed former Aral Sea bottom using remotely sensed data. We suggest that they are relict ice gouges, analogous to the modern ice scours of the Northern Caspian, Kara and other seas and lakes, previously studied by side scan sonar (SSS) surveys. Their average dimensions, from 3 to 90 m in width and from hundreds to thousands of meters in length, and spatial distribution were derived from satellite imagery interpretation and structure from motion-processing of UAV (unmanned aerial vehicle) images. Ice scouring features are virtually omnipresent at certain seabed sections, evidencing high ice gouging intensity in mid-latitude climates. Their greatest density is observed in the central part of the former East Aral Sea. The majority of contemporary ice gouges appeared during the rapid Aral Sea level fall between 1980 and the mid-1990s. Since then, the lake has almost completely drained, providing a unique opportunity for direct studies of exposed ice gouges using both in situ and remote-sensing techniques. These data could add to our current understanding of the scales and drivers of ice impact on the bottom of shallow seas and lakes.
format Text
author Stepan Maznev
Stanislav Ogorodov
Alisa Baranskaya
Aleksey Vergun
Vasiliy Arkhipov
Peter Bukharitsin
author_facet Stepan Maznev
Stanislav Ogorodov
Alisa Baranskaya
Aleksey Vergun
Vasiliy Arkhipov
Peter Bukharitsin
author_sort Stepan Maznev
title Ice-Gouging Topography of the Exposed Aral Sea Bed
title_short Ice-Gouging Topography of the Exposed Aral Sea Bed
title_full Ice-Gouging Topography of the Exposed Aral Sea Bed
title_fullStr Ice-Gouging Topography of the Exposed Aral Sea Bed
title_full_unstemmed Ice-Gouging Topography of the Exposed Aral Sea Bed
title_sort ice-gouging topography of the exposed aral sea bed
publisher Multidisciplinary Digital Publishing Institute
publishDate 2019
url https://doi.org/10.3390/rs11020113
op_coverage agris
genre Sea ice
genre_facet Sea ice
op_source Remote Sensing; Volume 11; Issue 2; Pages: 113
op_relation Remote Sensing in Geology, Geomorphology and Hydrology
https://dx.doi.org/10.3390/rs11020113
op_rights https://creativecommons.org/licenses/by/4.0/
op_doi https://doi.org/10.3390/rs11020113
container_title Remote Sensing
container_volume 11
container_issue 2
container_start_page 113
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