Internal Solitary Waves in the White Sea: Hot-Spots, Structure, and Kinematics from Multi-Sensor Observations
A detailed picture of internal solitary waves (ISWs) in the White Sea is presented based on an analysis of historical spaceborne synthetic aperture radar (SAR) data and field measurements. The major hot-spot of ISW generation locates in the southwestern (SW) Gorlo Strait (GS), characterized by the p...
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ftmdpi:oai:mdpi.com:/2072-4292/14/19/4948/ 2023-08-20T04:04:44+02:00 Internal Solitary Waves in the White Sea: Hot-Spots, Structure, and Kinematics from Multi-Sensor Observations Igor E. Kozlov Oksana A. Atadzhanova Alexey V. Zimin agris 2022-10-03 application/pdf https://doi.org/10.3390/rs14194948 EN eng Multidisciplinary Digital Publishing Institute Environmental Remote Sensing https://dx.doi.org/10.3390/rs14194948 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 14; Issue 19; Pages: 4948 internal solitary waves hot-spots tidal dynamics frontal zones wave kinematics SAR imaging vertical mixing White Sea Arctic Ocean Text 2022 ftmdpi https://doi.org/10.3390/rs14194948 2023-08-01T06:44:41Z A detailed picture of internal solitary waves (ISWs) in the White Sea is presented based on an analysis of historical spaceborne synthetic aperture radar (SAR) data and field measurements. The major hot-spot of ISW generation locates in the southwestern (SW) Gorlo Strait (GS), characterized by the presence of strong tides, complex topography, and two distinct fronts. Here, pronounced high-frequency isopycnal depressions of 5–8 m were regularly observed during flood and flood/ebb slackening. Other regions of pronounced ISW activity are found near Solovetsky Islands and in the northwestern Onega Bay. The spatial and kinematic properties of the observed ISWs are linked to water depth, with larger wave trains and higher propagation speeds being observed over the deep regions. Direct estimates of ISW propagation speeds from sequential and single SAR images agree well, while theoretical ones obtained using a two-layer model overestimate the observed values by 2–3 times. This is explained by the effective modulation of ISW propagation speed during the tidal cycle by background currents that are not accounted for in the model. Enhanced values of diapycnic diffusion coefficient in the pycnocline layer were registered near the frontal zones, where intense 14–17 m high ISWs were regularly observed. Text Arctic Arctic Ocean Onega Bay Solovetsky Solovetsky Islands White Sea MDPI Open Access Publishing Arctic Arctic Ocean White Sea Onega ENVELOPE(38.100,38.100,63.900,63.900) Solovetsky ENVELOPE(35.710,35.710,65.025,65.025) Remote Sensing 14 19 4948 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
internal solitary waves hot-spots tidal dynamics frontal zones wave kinematics SAR imaging vertical mixing White Sea Arctic Ocean |
spellingShingle |
internal solitary waves hot-spots tidal dynamics frontal zones wave kinematics SAR imaging vertical mixing White Sea Arctic Ocean Igor E. Kozlov Oksana A. Atadzhanova Alexey V. Zimin Internal Solitary Waves in the White Sea: Hot-Spots, Structure, and Kinematics from Multi-Sensor Observations |
topic_facet |
internal solitary waves hot-spots tidal dynamics frontal zones wave kinematics SAR imaging vertical mixing White Sea Arctic Ocean |
description |
A detailed picture of internal solitary waves (ISWs) in the White Sea is presented based on an analysis of historical spaceborne synthetic aperture radar (SAR) data and field measurements. The major hot-spot of ISW generation locates in the southwestern (SW) Gorlo Strait (GS), characterized by the presence of strong tides, complex topography, and two distinct fronts. Here, pronounced high-frequency isopycnal depressions of 5–8 m were regularly observed during flood and flood/ebb slackening. Other regions of pronounced ISW activity are found near Solovetsky Islands and in the northwestern Onega Bay. The spatial and kinematic properties of the observed ISWs are linked to water depth, with larger wave trains and higher propagation speeds being observed over the deep regions. Direct estimates of ISW propagation speeds from sequential and single SAR images agree well, while theoretical ones obtained using a two-layer model overestimate the observed values by 2–3 times. This is explained by the effective modulation of ISW propagation speed during the tidal cycle by background currents that are not accounted for in the model. Enhanced values of diapycnic diffusion coefficient in the pycnocline layer were registered near the frontal zones, where intense 14–17 m high ISWs were regularly observed. |
format |
Text |
author |
Igor E. Kozlov Oksana A. Atadzhanova Alexey V. Zimin |
author_facet |
Igor E. Kozlov Oksana A. Atadzhanova Alexey V. Zimin |
author_sort |
Igor E. Kozlov |
title |
Internal Solitary Waves in the White Sea: Hot-Spots, Structure, and Kinematics from Multi-Sensor Observations |
title_short |
Internal Solitary Waves in the White Sea: Hot-Spots, Structure, and Kinematics from Multi-Sensor Observations |
title_full |
Internal Solitary Waves in the White Sea: Hot-Spots, Structure, and Kinematics from Multi-Sensor Observations |
title_fullStr |
Internal Solitary Waves in the White Sea: Hot-Spots, Structure, and Kinematics from Multi-Sensor Observations |
title_full_unstemmed |
Internal Solitary Waves in the White Sea: Hot-Spots, Structure, and Kinematics from Multi-Sensor Observations |
title_sort |
internal solitary waves in the white sea: hot-spots, structure, and kinematics from multi-sensor observations |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/rs14194948 |
op_coverage |
agris |
long_lat |
ENVELOPE(38.100,38.100,63.900,63.900) ENVELOPE(35.710,35.710,65.025,65.025) |
geographic |
Arctic Arctic Ocean White Sea Onega Solovetsky |
geographic_facet |
Arctic Arctic Ocean White Sea Onega Solovetsky |
genre |
Arctic Arctic Ocean Onega Bay Solovetsky Solovetsky Islands White Sea |
genre_facet |
Arctic Arctic Ocean Onega Bay Solovetsky Solovetsky Islands White Sea |
op_source |
Remote Sensing; Volume 14; Issue 19; Pages: 4948 |
op_relation |
Environmental Remote Sensing https://dx.doi.org/10.3390/rs14194948 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs14194948 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
19 |
container_start_page |
4948 |
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1774715118544748544 |