Variability of the Marginal Ice Zone and Eddy Generation in Fram Strait and near Svalbard in Summer Based on Satellite Radar Observations
Purpose. The aim of the study is to investigate the spatial and temporal variability of drifting ice field edge and the features of eddy generation in the marginal ice zone (MIZ) in Fram Strait and near Svalbard during the warm period in 2007. Methods and Results. Satellite radar images of Envisat A...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS»
2023
|
Subjects: | |
Online Access: | https://doaj.org/article/3675610e7b2c449483c386d65a30d19e |
id |
ftdoajarticles:oai:doaj.org/article:3675610e7b2c449483c386d65a30d19e |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:3675610e7b2c449483c386d65a30d19e 2024-01-21T10:04:13+01:00 Variability of the Marginal Ice Zone and Eddy Generation in Fram Strait and near Svalbard in Summer Based on Satellite Radar Observations L.A. Petrenko I.E. Kozlov 2023-10-01T00:00:00Z https://doaj.org/article/3675610e7b2c449483c386d65a30d19e EN eng Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS» http://physical-oceanography.ru/repository/issues/2023/05/05/20230505.pdf https://doaj.org/toc/1573-160X 1573-160X https://doaj.org/article/3675610e7b2c449483c386d65a30d19e Physical Oceanography, Vol 39, Iss 5, Pp 594-611 (2023) marginal ice zone ice edge eddies svalbard fram strait satellite radar images arctic ocean Oceanography GC1-1581 article 2023 ftdoajarticles 2023-12-24T01:46:48Z Purpose. The aim of the study is to investigate the spatial and temporal variability of drifting ice field edge and the features of eddy generation in the marginal ice zone (MIZ) in Fram Strait and near Svalbard during the warm period in 2007. Methods and Results. Satellite radar images of Envisat ASAR for June – September 2007 were used to fix the position of drifting ice field boundary and to reveal the surface manifestations of eddy generations in the MIZ. It is established that during the upper mentioned period, the ice – water boundary experienced unequal displacements along its entire length, and that a total range of the ice edge movements was 30–220 km. At different wind conditions, the ice edge motion was accompanied by the formation of ice filaments and eddies, the maximum number of which was recorded in June. The data analysis allowed us to identify more than 2000 pronounced MIZ eddies in which the structures with a cyclonic type of rotation were evidently predominant (78%). The larger eddies (10–20 km in diameter) were observed over the deep-water areas of Fram Strait and over the Greenland Sea shelf, whereas the smaller ones (~ 5 km in diameter) – in the coastal areas of Svalbard. The cases when the ice fragments were detached from the ice field and subsequently involved in the vortex motion were recorded. The ice drift and orbital motion velocities in the eddies were assessed. Conclusions. The ice edge displacements and the process of eddy generation in the MIZ are significantly affected by the wind conditions. When the wind direction changes abruptly, the ice field fragments can be detached. The identified MIZ eddies are mainly of cyclonic rotation direction. Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait Greenland Greenland Sea Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Asar ENVELOPE(134.033,134.033,68.667,68.667) Greenland Svalbard |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
marginal ice zone ice edge eddies svalbard fram strait satellite radar images arctic ocean Oceanography GC1-1581 |
spellingShingle |
marginal ice zone ice edge eddies svalbard fram strait satellite radar images arctic ocean Oceanography GC1-1581 L.A. Petrenko I.E. Kozlov Variability of the Marginal Ice Zone and Eddy Generation in Fram Strait and near Svalbard in Summer Based on Satellite Radar Observations |
topic_facet |
marginal ice zone ice edge eddies svalbard fram strait satellite radar images arctic ocean Oceanography GC1-1581 |
description |
Purpose. The aim of the study is to investigate the spatial and temporal variability of drifting ice field edge and the features of eddy generation in the marginal ice zone (MIZ) in Fram Strait and near Svalbard during the warm period in 2007. Methods and Results. Satellite radar images of Envisat ASAR for June – September 2007 were used to fix the position of drifting ice field boundary and to reveal the surface manifestations of eddy generations in the MIZ. It is established that during the upper mentioned period, the ice – water boundary experienced unequal displacements along its entire length, and that a total range of the ice edge movements was 30–220 km. At different wind conditions, the ice edge motion was accompanied by the formation of ice filaments and eddies, the maximum number of which was recorded in June. The data analysis allowed us to identify more than 2000 pronounced MIZ eddies in which the structures with a cyclonic type of rotation were evidently predominant (78%). The larger eddies (10–20 km in diameter) were observed over the deep-water areas of Fram Strait and over the Greenland Sea shelf, whereas the smaller ones (~ 5 km in diameter) – in the coastal areas of Svalbard. The cases when the ice fragments were detached from the ice field and subsequently involved in the vortex motion were recorded. The ice drift and orbital motion velocities in the eddies were assessed. Conclusions. The ice edge displacements and the process of eddy generation in the MIZ are significantly affected by the wind conditions. When the wind direction changes abruptly, the ice field fragments can be detached. The identified MIZ eddies are mainly of cyclonic rotation direction. |
format |
Article in Journal/Newspaper |
author |
L.A. Petrenko I.E. Kozlov |
author_facet |
L.A. Petrenko I.E. Kozlov |
author_sort |
L.A. Petrenko |
title |
Variability of the Marginal Ice Zone and Eddy Generation in Fram Strait and near Svalbard in Summer Based on Satellite Radar Observations |
title_short |
Variability of the Marginal Ice Zone and Eddy Generation in Fram Strait and near Svalbard in Summer Based on Satellite Radar Observations |
title_full |
Variability of the Marginal Ice Zone and Eddy Generation in Fram Strait and near Svalbard in Summer Based on Satellite Radar Observations |
title_fullStr |
Variability of the Marginal Ice Zone and Eddy Generation in Fram Strait and near Svalbard in Summer Based on Satellite Radar Observations |
title_full_unstemmed |
Variability of the Marginal Ice Zone and Eddy Generation in Fram Strait and near Svalbard in Summer Based on Satellite Radar Observations |
title_sort |
variability of the marginal ice zone and eddy generation in fram strait and near svalbard in summer based on satellite radar observations |
publisher |
Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS» |
publishDate |
2023 |
url |
https://doaj.org/article/3675610e7b2c449483c386d65a30d19e |
long_lat |
ENVELOPE(134.033,134.033,68.667,68.667) |
geographic |
Arctic Arctic Ocean Asar Greenland Svalbard |
geographic_facet |
Arctic Arctic Ocean Asar Greenland Svalbard |
genre |
Arctic Arctic Ocean Fram Strait Greenland Greenland Sea Svalbard |
genre_facet |
Arctic Arctic Ocean Fram Strait Greenland Greenland Sea Svalbard |
op_source |
Physical Oceanography, Vol 39, Iss 5, Pp 594-611 (2023) |
op_relation |
http://physical-oceanography.ru/repository/issues/2023/05/05/20230505.pdf https://doaj.org/toc/1573-160X 1573-160X https://doaj.org/article/3675610e7b2c449483c386d65a30d19e |
_version_ |
1788694636371378176 |