Satellite-Based Evaluation of Submarine Permafrost Erosion at Shallow Offshore Areas in the Laptev Sea
Large areas of the seafloor in the Laptev Sea consist of submarine permafrost, which has experienced intense degradation over the last decades and centuries. Thermal abrasion of the submarine permafrost results in upward advection of suspended matter, which could reach the surface layer in shallow a...
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2023
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ftdoajarticles:oai:doaj.org/article:53fb5f128bbd4c6bbbda5293d8c29178 2023-11-12T04:18:25+01:00 Satellite-Based Evaluation of Submarine Permafrost Erosion at Shallow Offshore Areas in the Laptev Sea Alexander Osadchiev Polina Adamovskaya Stanislav Myslenkov Oleg Dudarev Igor Semiletov 2023-10-01T00:00:00Z https://doi.org/10.3390/rs15205065 https://doaj.org/article/53fb5f128bbd4c6bbbda5293d8c29178 EN eng MDPI AG https://www.mdpi.com/2072-4292/15/20/5065 https://doaj.org/toc/2072-4292 doi:10.3390/rs15205065 2072-4292 https://doaj.org/article/53fb5f128bbd4c6bbbda5293d8c29178 Remote Sensing, Vol 15, Iss 5065, p 5065 (2023) bottom sediments coastal upwelling seafloor erosion submarine permafrost thermal abrasion suspended matter flux Science Q article 2023 ftdoajarticles https://doi.org/10.3390/rs15205065 2023-10-29T00:35:45Z Large areas of the seafloor in the Laptev Sea consist of submarine permafrost, which has experienced intense degradation over the last decades and centuries. Thermal abrasion of the submarine permafrost results in upward advection of suspended matter, which could reach the surface layer in shallow areas. This process is visually manifested through increased turbidity of the sea surface layer, which is regularly detected in optical satellite imagery of the study areas. In this study, satellite data, wind and wave reanalysis, as well as in situ measurements are analyzed in order to reveal the main mechanisms of seafloor erosion in shallow areas of the Laptev Sea. We describe the synoptic variability in erosion at the Vasilyevskaya and Semenovskaya shoals in response to wind and wave conditions. Finally, using reanalysis data, daily suspended matter flux from this area was evaluated during ice-free periods in 1979–2021, and its seasonal and inter-annual variabilities were described. The obtained results contribute to our understanding of subsea permafrost degradation, the sediment budget, and carbon and nutrient cycles in the Laptev Sea. Article in Journal/Newspaper Ice laptev Laptev Sea permafrost Directory of Open Access Journals: DOAJ Articles Remote Sensing 15 20 5065 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
bottom sediments coastal upwelling seafloor erosion submarine permafrost thermal abrasion suspended matter flux Science Q |
spellingShingle |
bottom sediments coastal upwelling seafloor erosion submarine permafrost thermal abrasion suspended matter flux Science Q Alexander Osadchiev Polina Adamovskaya Stanislav Myslenkov Oleg Dudarev Igor Semiletov Satellite-Based Evaluation of Submarine Permafrost Erosion at Shallow Offshore Areas in the Laptev Sea |
topic_facet |
bottom sediments coastal upwelling seafloor erosion submarine permafrost thermal abrasion suspended matter flux Science Q |
description |
Large areas of the seafloor in the Laptev Sea consist of submarine permafrost, which has experienced intense degradation over the last decades and centuries. Thermal abrasion of the submarine permafrost results in upward advection of suspended matter, which could reach the surface layer in shallow areas. This process is visually manifested through increased turbidity of the sea surface layer, which is regularly detected in optical satellite imagery of the study areas. In this study, satellite data, wind and wave reanalysis, as well as in situ measurements are analyzed in order to reveal the main mechanisms of seafloor erosion in shallow areas of the Laptev Sea. We describe the synoptic variability in erosion at the Vasilyevskaya and Semenovskaya shoals in response to wind and wave conditions. Finally, using reanalysis data, daily suspended matter flux from this area was evaluated during ice-free periods in 1979–2021, and its seasonal and inter-annual variabilities were described. The obtained results contribute to our understanding of subsea permafrost degradation, the sediment budget, and carbon and nutrient cycles in the Laptev Sea. |
format |
Article in Journal/Newspaper |
author |
Alexander Osadchiev Polina Adamovskaya Stanislav Myslenkov Oleg Dudarev Igor Semiletov |
author_facet |
Alexander Osadchiev Polina Adamovskaya Stanislav Myslenkov Oleg Dudarev Igor Semiletov |
author_sort |
Alexander Osadchiev |
title |
Satellite-Based Evaluation of Submarine Permafrost Erosion at Shallow Offshore Areas in the Laptev Sea |
title_short |
Satellite-Based Evaluation of Submarine Permafrost Erosion at Shallow Offshore Areas in the Laptev Sea |
title_full |
Satellite-Based Evaluation of Submarine Permafrost Erosion at Shallow Offshore Areas in the Laptev Sea |
title_fullStr |
Satellite-Based Evaluation of Submarine Permafrost Erosion at Shallow Offshore Areas in the Laptev Sea |
title_full_unstemmed |
Satellite-Based Evaluation of Submarine Permafrost Erosion at Shallow Offshore Areas in the Laptev Sea |
title_sort |
satellite-based evaluation of submarine permafrost erosion at shallow offshore areas in the laptev sea |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/rs15205065 https://doaj.org/article/53fb5f128bbd4c6bbbda5293d8c29178 |
genre |
Ice laptev Laptev Sea permafrost |
genre_facet |
Ice laptev Laptev Sea permafrost |
op_source |
Remote Sensing, Vol 15, Iss 5065, p 5065 (2023) |
op_relation |
https://www.mdpi.com/2072-4292/15/20/5065 https://doaj.org/toc/2072-4292 doi:10.3390/rs15205065 2072-4292 https://doaj.org/article/53fb5f128bbd4c6bbbda5293d8c29178 |
op_doi |
https://doi.org/10.3390/rs15205065 |
container_title |
Remote Sensing |
container_volume |
15 |
container_issue |
20 |
container_start_page |
5065 |
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1782335032103272448 |