The Laptev Sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season
The main objective of this research paper is to estimate the new-ice production in the Laptev Sea flaw lead during the 1991/1992 winter season. A one-dimensional energy balance model was applied to calculate ocean-to-atmosphere heat flux and the resulting new-ice formation over open water. For a det...
Published in: | Cold Regions Science and Technology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
1998
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Online Access: | https://oceanrep.geomar.de/id/eprint/31405/ https://oceanrep.geomar.de/id/eprint/31405/1/1-s2.0-S0165232X98000056-main.pdf https://doi.org/10.1016/S0165-232X(98)00005-6 |
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ftoceanrep:oai:oceanrep.geomar.de:31405 2023-05-15T15:17:20+02:00 The Laptev Sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season Dethleff, Dirk Loewe, P. Kleine, E. 1998 text https://oceanrep.geomar.de/id/eprint/31405/ https://oceanrep.geomar.de/id/eprint/31405/1/1-s2.0-S0165232X98000056-main.pdf https://doi.org/10.1016/S0165-232X(98)00005-6 en eng Elsevier https://oceanrep.geomar.de/id/eprint/31405/1/1-s2.0-S0165232X98000056-main.pdf Dethleff, D., Loewe, P. and Kleine, E. (1998) The Laptev Sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season. Cold Regions Science and Technology, 27 (3). pp. 225-243. DOI 10.1016/S0165-232X(98)00005-6 <https://doi.org/10.1016/S0165-232X%2898%2900005-6>. doi:10.1016/S0165-232X(98)00005-6 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 1998 ftoceanrep https://doi.org/10.1016/S0165-232X(98)00005-6 2023-04-07T15:23:32Z The main objective of this research paper is to estimate the new-ice production in the Laptev Sea flaw lead during the 1991/1992 winter season. A one-dimensional energy balance model was applied to calculate ocean-to-atmosphere heat flux and the resulting new-ice formation over open water. For a detailed estimate of regional ice production, the flaw lead was divided into 14 sections based on the analysis of NOAA-satellite images and Russian ice charts. Opening and maintenance of the lead sections are controlled by offshore winds, whereas closing of open water is caused by onshore winds. Since the orientation of the lead varies from section to section, the same regional wind forcing can cause different local lead behavior. Model results reveal that the seasonally accumulated thickness of new ice formed in the different lead sections—under the assumption of instantaneous lateral new-ice removal from the water surface—varies from 1.3 m to 13 m over temporarily open water and may reach 20 m over permanently open water. The corresponding ice volume produced in the sections varies between 3.4 km3 and 59 km3 and amounts to 258 km3 for the entire lead. The significant regional variations in new-ice production are due to differences in (i) the number of days that a lead section is open (open-lead days), (ii) the oceanic heat loss during open-lead days, and (iii) the areal extent of the lead sections. As compared to other studies,—at least during 1991/1992 winter season—the Laptev Sea flaw lead produced between 28 and 617% more initial sea ice than the Kara, Barents, East Siberian and Chukchi leads. Despite its limited areal extent of roughly 36,000 km2, which represents only 8% of the entire Laptev Sea, the flaw lead produces about 32% of the annual shelf ice. The ice production in the flaw lead is 5.3 times higher than the remainder of the shelf (7.4 m vs. 1.4 m). Furthermore, the Laptev Sea flaw lead produces 2.6% of the ice annually formed the entire Arctic Mediterranean Sea and contributes about 9% to the volume of ... Article in Journal/Newspaper Arctic Chukchi laptev Laptev Sea Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Laptev Sea Cold Regions Science and Technology 27 3 225 243 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The main objective of this research paper is to estimate the new-ice production in the Laptev Sea flaw lead during the 1991/1992 winter season. A one-dimensional energy balance model was applied to calculate ocean-to-atmosphere heat flux and the resulting new-ice formation over open water. For a detailed estimate of regional ice production, the flaw lead was divided into 14 sections based on the analysis of NOAA-satellite images and Russian ice charts. Opening and maintenance of the lead sections are controlled by offshore winds, whereas closing of open water is caused by onshore winds. Since the orientation of the lead varies from section to section, the same regional wind forcing can cause different local lead behavior. Model results reveal that the seasonally accumulated thickness of new ice formed in the different lead sections—under the assumption of instantaneous lateral new-ice removal from the water surface—varies from 1.3 m to 13 m over temporarily open water and may reach 20 m over permanently open water. The corresponding ice volume produced in the sections varies between 3.4 km3 and 59 km3 and amounts to 258 km3 for the entire lead. The significant regional variations in new-ice production are due to differences in (i) the number of days that a lead section is open (open-lead days), (ii) the oceanic heat loss during open-lead days, and (iii) the areal extent of the lead sections. As compared to other studies,—at least during 1991/1992 winter season—the Laptev Sea flaw lead produced between 28 and 617% more initial sea ice than the Kara, Barents, East Siberian and Chukchi leads. Despite its limited areal extent of roughly 36,000 km2, which represents only 8% of the entire Laptev Sea, the flaw lead produces about 32% of the annual shelf ice. The ice production in the flaw lead is 5.3 times higher than the remainder of the shelf (7.4 m vs. 1.4 m). Furthermore, the Laptev Sea flaw lead produces 2.6% of the ice annually formed the entire Arctic Mediterranean Sea and contributes about 9% to the volume of ... |
format |
Article in Journal/Newspaper |
author |
Dethleff, Dirk Loewe, P. Kleine, E. |
spellingShingle |
Dethleff, Dirk Loewe, P. Kleine, E. The Laptev Sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season |
author_facet |
Dethleff, Dirk Loewe, P. Kleine, E. |
author_sort |
Dethleff, Dirk |
title |
The Laptev Sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season |
title_short |
The Laptev Sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season |
title_full |
The Laptev Sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season |
title_fullStr |
The Laptev Sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season |
title_full_unstemmed |
The Laptev Sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season |
title_sort |
laptev sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season |
publisher |
Elsevier |
publishDate |
1998 |
url |
https://oceanrep.geomar.de/id/eprint/31405/ https://oceanrep.geomar.de/id/eprint/31405/1/1-s2.0-S0165232X98000056-main.pdf https://doi.org/10.1016/S0165-232X(98)00005-6 |
geographic |
Arctic Laptev Sea |
geographic_facet |
Arctic Laptev Sea |
genre |
Arctic Chukchi laptev Laptev Sea Sea ice |
genre_facet |
Arctic Chukchi laptev Laptev Sea Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/31405/1/1-s2.0-S0165232X98000056-main.pdf Dethleff, D., Loewe, P. and Kleine, E. (1998) The Laptev Sea flaw lead - detailed investigation on ice formation and export during 1991/1992 winter season. Cold Regions Science and Technology, 27 (3). pp. 225-243. DOI 10.1016/S0165-232X(98)00005-6 <https://doi.org/10.1016/S0165-232X%2898%2900005-6>. doi:10.1016/S0165-232X(98)00005-6 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/S0165-232X(98)00005-6 |
container_title |
Cold Regions Science and Technology |
container_volume |
27 |
container_issue |
3 |
container_start_page |
225 |
op_container_end_page |
243 |
_version_ |
1766347582984945664 |