Table_2_Structure and Inter-Annual Variability of the Freshened Surface Layer in the Laptev and East-Siberian Seas During Ice-Free Periods.XLSX
This work is focused on the structure and inter-annual variability of the freshened surface layer (FSL) in the Laptev and East-Siberian seas during ice-free periods. This layer is formed mainly by deltaic rivers among which the Lena River contributes about two thirds of the inflowing freshwater volu...
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Online Access: | https://doi.org/10.3389/fmars.2021.735011.s002 |
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ftsmithonian:oai:figshare.com:article/17157335 2023-05-15T15:17:19+02:00 Table_2_Structure and Inter-Annual Variability of the Freshened Surface Layer in the Laptev and East-Siberian Seas During Ice-Free Periods.XLSX Alexander Osadchiev (11822438) Dmitry Frey (11822441) Eduard Spivak (11822444) Sergey Shchuka (11660488) Natalia Tilinina (11822447) Igor Semiletov (11822450) 2021-12-10T04:43:11Z https://doi.org/10.3389/fmars.2021.735011.s002 unknown https://figshare.com/articles/dataset/Table_2_Structure_and_Inter-Annual_Variability_of_the_Freshened_Surface_Layer_in_the_Laptev_and_East-Siberian_Seas_During_Ice-Free_Periods_XLSX/17157335 doi:10.3389/fmars.2021.735011.s002 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering river plume freshened surface layer stratification Lena River Laptev Sea East-Siberian Sea Arctic Ocean Dataset 2021 ftsmithonian https://doi.org/10.3389/fmars.2021.735011.s002 2021-12-19T19:44:29Z This work is focused on the structure and inter-annual variability of the freshened surface layer (FSL) in the Laptev and East-Siberian seas during ice-free periods. This layer is formed mainly by deltaic rivers among which the Lena River contributes about two thirds of the inflowing freshwater volume. Based on in situ measurements, we show that the area of this FSL during certain years is much greater than the area of FSL in the neighboring Kara Sea, while the total annual freshwater discharge to the Laptev and East-Siberian seas is 1.5 times less than to the Kara Sea (mainly from the estuaries of the Ob and Yenisei rivers). This feature is caused by differences in morphology of the estuaries and deltas. Shallow and narrow channels of the Lena Delta are limitedly affected by sea water. As a result, undiluted Lena discharge inflows to sea from multiple channels and forms relatively shallow plume, as compared to the Ob-Yenisei plume, which mixes with subjacent saline sea water in deep and wide estuaries. Due to small vertical extents of FSL in the Laptev and East-Siberian seas, wind conditions strongly affect its spreading and determine its significant inter-annual variability, as compared to relatively stable FSL in the Kara Sea. During years with prevailing western and northern winds, FSL is localized in the southern parts of the Laptev and East-Siberian seas due to southward Ekman transport, meridional extent (<250 km) and area (∼250,000 km 2 ) of FSL are relatively small. During years with strong eastern winds FSL spreads northward over large area (up to 500,000 km 2 ), its meridional extent increases up to 500–700 km. At the same time, area and position of FSL do not show any dependence on significant variability of the annual river discharge volume and ice coverage during warm season. Dataset Arctic Arctic Ocean East Siberian Sea Kara Sea laptev Laptev Sea lena delta lena river Unknown Arctic Arctic Ocean East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Kara Sea Laptev Sea |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering river plume freshened surface layer stratification Lena River Laptev Sea East-Siberian Sea Arctic Ocean |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering river plume freshened surface layer stratification Lena River Laptev Sea East-Siberian Sea Arctic Ocean Alexander Osadchiev (11822438) Dmitry Frey (11822441) Eduard Spivak (11822444) Sergey Shchuka (11660488) Natalia Tilinina (11822447) Igor Semiletov (11822450) Table_2_Structure and Inter-Annual Variability of the Freshened Surface Layer in the Laptev and East-Siberian Seas During Ice-Free Periods.XLSX |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering river plume freshened surface layer stratification Lena River Laptev Sea East-Siberian Sea Arctic Ocean |
description |
This work is focused on the structure and inter-annual variability of the freshened surface layer (FSL) in the Laptev and East-Siberian seas during ice-free periods. This layer is formed mainly by deltaic rivers among which the Lena River contributes about two thirds of the inflowing freshwater volume. Based on in situ measurements, we show that the area of this FSL during certain years is much greater than the area of FSL in the neighboring Kara Sea, while the total annual freshwater discharge to the Laptev and East-Siberian seas is 1.5 times less than to the Kara Sea (mainly from the estuaries of the Ob and Yenisei rivers). This feature is caused by differences in morphology of the estuaries and deltas. Shallow and narrow channels of the Lena Delta are limitedly affected by sea water. As a result, undiluted Lena discharge inflows to sea from multiple channels and forms relatively shallow plume, as compared to the Ob-Yenisei plume, which mixes with subjacent saline sea water in deep and wide estuaries. Due to small vertical extents of FSL in the Laptev and East-Siberian seas, wind conditions strongly affect its spreading and determine its significant inter-annual variability, as compared to relatively stable FSL in the Kara Sea. During years with prevailing western and northern winds, FSL is localized in the southern parts of the Laptev and East-Siberian seas due to southward Ekman transport, meridional extent (<250 km) and area (∼250,000 km 2 ) of FSL are relatively small. During years with strong eastern winds FSL spreads northward over large area (up to 500,000 km 2 ), its meridional extent increases up to 500–700 km. At the same time, area and position of FSL do not show any dependence on significant variability of the annual river discharge volume and ice coverage during warm season. |
format |
Dataset |
author |
Alexander Osadchiev (11822438) Dmitry Frey (11822441) Eduard Spivak (11822444) Sergey Shchuka (11660488) Natalia Tilinina (11822447) Igor Semiletov (11822450) |
author_facet |
Alexander Osadchiev (11822438) Dmitry Frey (11822441) Eduard Spivak (11822444) Sergey Shchuka (11660488) Natalia Tilinina (11822447) Igor Semiletov (11822450) |
author_sort |
Alexander Osadchiev (11822438) |
title |
Table_2_Structure and Inter-Annual Variability of the Freshened Surface Layer in the Laptev and East-Siberian Seas During Ice-Free Periods.XLSX |
title_short |
Table_2_Structure and Inter-Annual Variability of the Freshened Surface Layer in the Laptev and East-Siberian Seas During Ice-Free Periods.XLSX |
title_full |
Table_2_Structure and Inter-Annual Variability of the Freshened Surface Layer in the Laptev and East-Siberian Seas During Ice-Free Periods.XLSX |
title_fullStr |
Table_2_Structure and Inter-Annual Variability of the Freshened Surface Layer in the Laptev and East-Siberian Seas During Ice-Free Periods.XLSX |
title_full_unstemmed |
Table_2_Structure and Inter-Annual Variability of the Freshened Surface Layer in the Laptev and East-Siberian Seas During Ice-Free Periods.XLSX |
title_sort |
table_2_structure and inter-annual variability of the freshened surface layer in the laptev and east-siberian seas during ice-free periods.xlsx |
publishDate |
2021 |
url |
https://doi.org/10.3389/fmars.2021.735011.s002 |
long_lat |
ENVELOPE(166.000,166.000,74.000,74.000) |
geographic |
Arctic Arctic Ocean East Siberian Sea Kara Sea Laptev Sea |
geographic_facet |
Arctic Arctic Ocean East Siberian Sea Kara Sea Laptev Sea |
genre |
Arctic Arctic Ocean East Siberian Sea Kara Sea laptev Laptev Sea lena delta lena river |
genre_facet |
Arctic Arctic Ocean East Siberian Sea Kara Sea laptev Laptev Sea lena delta lena river |
op_relation |
https://figshare.com/articles/dataset/Table_2_Structure_and_Inter-Annual_Variability_of_the_Freshened_Surface_Layer_in_the_Laptev_and_East-Siberian_Seas_During_Ice-Free_Periods_XLSX/17157335 doi:10.3389/fmars.2021.735011.s002 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2021.735011.s002 |
_version_ |
1766347564792152064 |