Mesoscale eddies in the Gulf of Alaska: Observations and implications
Mesoscale eddies in the Gulf of Alaska are thought to contribute to the shelf-slope exchange of nutrients and plankton, enhancing biological production. We report on a study of two anticyclonic mesoscale eddies in this region observed through in situ sampling during August and September 2007. Both e...
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University of California, Santa Cruz
2012
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ftproquest:oai:pqdtoai.proquest.com:1532621 2023-05-15T17:04:39+02:00 Mesoscale eddies in the Gulf of Alaska: Observations and implications Rovegno, Peter 2012-01-01 00:00:01.0 http://pqdtopen.proquest.com/#viewpdf?dispub=1532621 ENG eng University of California, Santa Cruz http://pqdtopen.proquest.com/#viewpdf?dispub=1532621 Physical oceanography|Remote sensing thesis 2012 ftproquest 2021-03-13T17:36:11Z Mesoscale eddies in the Gulf of Alaska are thought to contribute to the shelf-slope exchange of nutrients and plankton, enhancing biological production. We report on a study of two anticyclonic mesoscale eddies in this region observed through in situ sampling during August and September 2007. Both eddies exhibited in their cores theta-S profiles with warmer, fresher water relative to the properties of the ambient basin water between 150 and 300 m depth. Hydrographic properties and satellite altimetry data were analyzed to identify likely formation regions for each feature. One eddy, sampled near Yakutat, Alaska, originated in the Sitka formation region (221–223° E); the second eddy, sampled south of Kodiak Island, originated near the Kenai Peninsula, southeast of the Kennedy and Stevenson entrances to Cook Inlet—an area not previously studied as a formation region. Subsequent analysis of 16 years of satellite altimeter data (from 1992 to 2008) with an algorithm designed to identify and track eddies revealed approximately 6 Kenai eddies that have formed in this region. Although this number constitutes only 3.2% of the 188 eddies identified by the algorithm during this period, it represents 15.4% of the 39 eddies that formed in or propagated westward into the Alaskan Stream. Thesis Kodiak Yakutat Alaska PQDT Open: Open Access Dissertations and Theses (ProQuest) Gulf of Alaska |
institution |
Open Polar |
collection |
PQDT Open: Open Access Dissertations and Theses (ProQuest) |
op_collection_id |
ftproquest |
language |
English |
topic |
Physical oceanography|Remote sensing |
spellingShingle |
Physical oceanography|Remote sensing Rovegno, Peter Mesoscale eddies in the Gulf of Alaska: Observations and implications |
topic_facet |
Physical oceanography|Remote sensing |
description |
Mesoscale eddies in the Gulf of Alaska are thought to contribute to the shelf-slope exchange of nutrients and plankton, enhancing biological production. We report on a study of two anticyclonic mesoscale eddies in this region observed through in situ sampling during August and September 2007. Both eddies exhibited in their cores theta-S profiles with warmer, fresher water relative to the properties of the ambient basin water between 150 and 300 m depth. Hydrographic properties and satellite altimetry data were analyzed to identify likely formation regions for each feature. One eddy, sampled near Yakutat, Alaska, originated in the Sitka formation region (221–223° E); the second eddy, sampled south of Kodiak Island, originated near the Kenai Peninsula, southeast of the Kennedy and Stevenson entrances to Cook Inlet—an area not previously studied as a formation region. Subsequent analysis of 16 years of satellite altimeter data (from 1992 to 2008) with an algorithm designed to identify and track eddies revealed approximately 6 Kenai eddies that have formed in this region. Although this number constitutes only 3.2% of the 188 eddies identified by the algorithm during this period, it represents 15.4% of the 39 eddies that formed in or propagated westward into the Alaskan Stream. |
format |
Thesis |
author |
Rovegno, Peter |
author_facet |
Rovegno, Peter |
author_sort |
Rovegno, Peter |
title |
Mesoscale eddies in the Gulf of Alaska: Observations and implications |
title_short |
Mesoscale eddies in the Gulf of Alaska: Observations and implications |
title_full |
Mesoscale eddies in the Gulf of Alaska: Observations and implications |
title_fullStr |
Mesoscale eddies in the Gulf of Alaska: Observations and implications |
title_full_unstemmed |
Mesoscale eddies in the Gulf of Alaska: Observations and implications |
title_sort |
mesoscale eddies in the gulf of alaska: observations and implications |
publisher |
University of California, Santa Cruz |
publishDate |
2012 |
url |
http://pqdtopen.proquest.com/#viewpdf?dispub=1532621 |
geographic |
Gulf of Alaska |
geographic_facet |
Gulf of Alaska |
genre |
Kodiak Yakutat Alaska |
genre_facet |
Kodiak Yakutat Alaska |
op_relation |
http://pqdtopen.proquest.com/#viewpdf?dispub=1532621 |
_version_ |
1766058970020052992 |