Eddy formation in the bays of Kamchatka and fluxes to the open ocean
The Eastern Kamchatka Current (EKC) is the western boundary current of the North Pacific subpolar gyre. Southeast of the Kamchatka Peninsula lies a large anticyclonic eddy, the Kamchatka Eddy (KE). This eddy is quasi-stationary. More generally, the oceanic region east of the EKC contains many eddies...
Published in: | Ocean Dynamics |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Heidelberg
2021
|
Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/00816/92795/99457.pdf https://doi.org/10.1007/s10236-021-01449-w https://archimer.ifremer.fr/doc/00816/92795/ |
id |
ftarchimer:oai:archimer.ifremer.fr:92795 |
---|---|
record_format |
openpolar |
spelling |
ftarchimer:oai:archimer.ifremer.fr:92795 2023-05-15T16:58:11+02:00 Eddy formation in the bays of Kamchatka and fluxes to the open ocean L'Her, Alexandre Reinert, Markus Prants, Sergey Carton, Xavier Morvan, Mathieu 2021-05 application/pdf https://archimer.ifremer.fr/doc/00816/92795/99457.pdf https://doi.org/10.1007/s10236-021-01449-w https://archimer.ifremer.fr/doc/00816/92795/ eng eng Springer Heidelberg https://archimer.ifremer.fr/doc/00816/92795/99457.pdf doi:10.1007/s10236-021-01449-w https://archimer.ifremer.fr/doc/00816/92795/ info:eu-repo/semantics/openAccess restricted use Ocean Dynamics (1616-7341) (Springer Heidelberg), 2021-05 , Vol. 71 , N. 5 , P. 601-612 Kamchatka current Kamchatka eddy Sea surface height data 2D numerical model Flow instability Vortex formation Lagrangian analysis text Publication info:eu-repo/semantics/article 2021 ftarchimer https://doi.org/10.1007/s10236-021-01449-w 2023-01-31T23:50:41Z The Eastern Kamchatka Current (EKC) is the western boundary current of the North Pacific subpolar gyre. Southeast of the Kamchatka Peninsula lies a large anticyclonic eddy, the Kamchatka Eddy (KE). This eddy is quasi-stationary. More generally, the oceanic region east of the EKC contains many eddies, several of them large and long lasting. Using surface currents derived from altimetry, particle tracking and a simple two-dimensional numerical model of fluid flow, we investigate the variability of this eddy field, the generation of eddies in the bays of Kamchatka by the EKC and fluxes of water to and from these bays. Firstly, we recover in our analysis of long-lasting eddies, the main eddies of the region. Among strong eddies, the parity bias favors anticyclones. Our numerical simulations give a possible explanation for the process of eddy creation in the bays of the peninsula and show that the northernmost bay produces most anticyclones. Then, we track forward the water particles from these bays and we determine their fate in the open ocean; southeastward and southwestward trajectories are the most frequent. We also track water particles backward from the KE site; they often drift near the Kamchatka coast, but others drift south of this site and remain there, a priori trapped in other eddies. This study confirms the complexity of mesoscale motions and water exchanges in this region. Article in Journal/Newspaper Kamchatka Kamchatka Peninsula Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Kamchatka Peninsula ENVELOPE(160.000,160.000,56.000,56.000) Pacific Ocean Dynamics 71 5 601 612 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Kamchatka current Kamchatka eddy Sea surface height data 2D numerical model Flow instability Vortex formation Lagrangian analysis |
spellingShingle |
Kamchatka current Kamchatka eddy Sea surface height data 2D numerical model Flow instability Vortex formation Lagrangian analysis L'Her, Alexandre Reinert, Markus Prants, Sergey Carton, Xavier Morvan, Mathieu Eddy formation in the bays of Kamchatka and fluxes to the open ocean |
topic_facet |
Kamchatka current Kamchatka eddy Sea surface height data 2D numerical model Flow instability Vortex formation Lagrangian analysis |
description |
The Eastern Kamchatka Current (EKC) is the western boundary current of the North Pacific subpolar gyre. Southeast of the Kamchatka Peninsula lies a large anticyclonic eddy, the Kamchatka Eddy (KE). This eddy is quasi-stationary. More generally, the oceanic region east of the EKC contains many eddies, several of them large and long lasting. Using surface currents derived from altimetry, particle tracking and a simple two-dimensional numerical model of fluid flow, we investigate the variability of this eddy field, the generation of eddies in the bays of Kamchatka by the EKC and fluxes of water to and from these bays. Firstly, we recover in our analysis of long-lasting eddies, the main eddies of the region. Among strong eddies, the parity bias favors anticyclones. Our numerical simulations give a possible explanation for the process of eddy creation in the bays of the peninsula and show that the northernmost bay produces most anticyclones. Then, we track forward the water particles from these bays and we determine their fate in the open ocean; southeastward and southwestward trajectories are the most frequent. We also track water particles backward from the KE site; they often drift near the Kamchatka coast, but others drift south of this site and remain there, a priori trapped in other eddies. This study confirms the complexity of mesoscale motions and water exchanges in this region. |
format |
Article in Journal/Newspaper |
author |
L'Her, Alexandre Reinert, Markus Prants, Sergey Carton, Xavier Morvan, Mathieu |
author_facet |
L'Her, Alexandre Reinert, Markus Prants, Sergey Carton, Xavier Morvan, Mathieu |
author_sort |
L'Her, Alexandre |
title |
Eddy formation in the bays of Kamchatka and fluxes to the open ocean |
title_short |
Eddy formation in the bays of Kamchatka and fluxes to the open ocean |
title_full |
Eddy formation in the bays of Kamchatka and fluxes to the open ocean |
title_fullStr |
Eddy formation in the bays of Kamchatka and fluxes to the open ocean |
title_full_unstemmed |
Eddy formation in the bays of Kamchatka and fluxes to the open ocean |
title_sort |
eddy formation in the bays of kamchatka and fluxes to the open ocean |
publisher |
Springer Heidelberg |
publishDate |
2021 |
url |
https://archimer.ifremer.fr/doc/00816/92795/99457.pdf https://doi.org/10.1007/s10236-021-01449-w https://archimer.ifremer.fr/doc/00816/92795/ |
long_lat |
ENVELOPE(160.000,160.000,56.000,56.000) |
geographic |
Kamchatka Peninsula Pacific |
geographic_facet |
Kamchatka Peninsula Pacific |
genre |
Kamchatka Kamchatka Peninsula |
genre_facet |
Kamchatka Kamchatka Peninsula |
op_source |
Ocean Dynamics (1616-7341) (Springer Heidelberg), 2021-05 , Vol. 71 , N. 5 , P. 601-612 |
op_relation |
https://archimer.ifremer.fr/doc/00816/92795/99457.pdf doi:10.1007/s10236-021-01449-w https://archimer.ifremer.fr/doc/00816/92795/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1007/s10236-021-01449-w |
container_title |
Ocean Dynamics |
container_volume |
71 |
container_issue |
5 |
container_start_page |
601 |
op_container_end_page |
612 |
_version_ |
1766049998109147136 |