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Evolving Ice-ocean Dynamics of the W...

Dewey, Sarah R.

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Evolving Ice-ocean Dynamics of the Western Arctic.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Evolving Ice-ocean Dynamics of the Western Arctic./
作者:	Dewey, Sarah R.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	122 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-05, Section: B.
Contained By:	Dissertations Abstracts International81-05B.
標題:	Physical oceanography. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=22620154
ISBN:	9781687954701

Evolving Ice-ocean Dynamics of the Western Arctic.
Dewey, Sarah R.

Evolving Ice-ocean Dynamics of the Western Arctic. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 122 p.

Source: Dissertations Abstracts International, Volume: 81-05, Section: B.

Thesis (Ph.D.)--University of Washington, 2019.

This item is not available from ProQuest Dissertations & Theses.

This dissertation examines the western Arctic Ocean and how its freshwater content and dynamics have evolved, particularly in the Beaufort Gyre circulation system north of Alaska. The recent growth of the Beaufort Sea Seasonal Ice Zone and its large freshwater content relative to the rest of the Arctic Ocean make it an ideal laboratory to understand the transformation of the air-ice-ocean physical system under a changing climate. We consider this system in part through the lens of its freshwater, bringing together in-situ and satellite observations and models to describe changes in mixed-layer salinity, ocean velocity, and surface stress. The first part of this manuscript looks at the effect of large-scale sea ice retreat on local ocean mixed-layer freshwater content, and the second part examines changes in ocean and ice circulation speeds-and with them, resulting surface stresses-over time. These changes affect ocean freshwater content and gyre equilibration, both of which are observed to have stabilized in the last decade after a period of spin-up. The third part of this dissertation examines how ice-ocean stress coefficients behave at daily to monthly timescales, and how they too may have changed in recent decades. Together, this work provides a three-dimensional, updated description of how the Beaufort Sea surface physical system operates and transports freshwater, especially under recently diminished ice cover.

ISBN: 9781687954701Subjects--Topical Terms:

3168433
Physical oceanography.

Evolving Ice-ocean Dynamics of the Western Arctic.
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520 $a This dissertation examines the western Arctic Ocean and how its freshwater content and dynamics have evolved, particularly in the Beaufort Gyre circulation system north of Alaska. The recent growth of the Beaufort Sea Seasonal Ice Zone and its large freshwater content relative to the rest of the Arctic Ocean make it an ideal laboratory to understand the transformation of the air-ice-ocean physical system under a changing climate. We consider this system in part through the lens of its freshwater, bringing together in-situ and satellite observations and models to describe changes in mixed-layer salinity, ocean velocity, and surface stress. The first part of this manuscript looks at the effect of large-scale sea ice retreat on local ocean mixed-layer freshwater content, and the second part examines changes in ocean and ice circulation speeds-and with them, resulting surface stresses-over time. These changes affect ocean freshwater content and gyre equilibration, both of which are observed to have stabilized in the last decade after a period of spin-up. The third part of this dissertation examines how ice-ocean stress coefficients behave at daily to monthly timescales, and how they too may have changed in recent decades. Together, this work provides a three-dimensional, updated description of how the Beaufort Sea surface physical system operates and transports freshwater, especially under recently diminished ice cover.
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