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Circulation and heat transport on the West Antarctic Peninsula continental shelf

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TitleInfo
Title
Circulation and heat transport on the West Antarctic Peninsula continental shelf
Name (type = personal)
NamePart (type = family)
Couto
NamePart (type = given)
Nicole
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Nicole Couto
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author
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NamePart (type = family)
Schofield
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Oscar
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Oscar Schofield
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Advisory Committee
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chair
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NamePart (type = family)
Kohut
NamePart (type = given)
Josh
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Josh Kohut
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Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Chant
NamePart (type = given)
Bob
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Bob Chant
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Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Martinson
NamePart (type = given)
Doug
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Doug Martinson
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
outside member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (type = corporate)
NamePart
School of Graduate Studies
Role
RoleTerm (authority = RULIB)
school
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Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (qualifier = exact)
2017
DateOther (qualifier = exact); (type = degree)
2017-10
CopyrightDate (encoding = w3cdtf); (qualifier = exact)
2017
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
The West Antarctic Peninsula (WAP) has experienced rapid warming over the past several decades, which has resulted in the melting of glaciers and sea ice and created serious consequences for many ice-dependent species. Upper Circumpolar Deep Water (UCDW) is a warm, nutrient-rich water mass found in deep waters off the WAP continental shelf. It is the major source of oceanic heat and nutrients to the shelf waters. This dissertation focuses on the transport of this water mass onto the shelf and its transformation as it moves toward coastal canyons. Data from glider transects along the WAP shelf showed that a significant portion of heat advected onto the shelf is carried in mesoscale eddies. Most of these eddies move across the shelf along the northeastern walls of shelf-incising troughs that open at the shelf break. These mesoscale features steadily lose heat with increasing distance along their paths and may be responsible for as much as 50% of the heat flux onto the shelf. Once on the shelf, UCDW follows complicated pathways toward the coast. Virtual drifters released at several depths near the shelf break in a high-resolution numerical model of the WAP showed that UCDW moves northward along the shelf slope until it is pulled into the shelf interior at one of several troughs. Drifters were often caught in trough-contained cyclonic gyres, moving shoreward along their northern walls and seaward along their southern walls. They entered Palmer Deep, an ecologically important coastal canyon in the northern part of the WAP, primarily from the northeast. Those that traveled the farthest north before entering the canyon cooled most significantly. Results from the model, along with data from a subsurface mooring deployed at the head of a coastal canyon, were used to describe the nearshore circulation at the end of the UCDW transit. Transport was dominated by a southeastward-flowing current during winter and shifted toward the southwest during summer after sea ice had retreated and when northerly wind intensity was strong. More UCDW entered the canyon during winter than summer, which may be the result of a more barotropic flow during winter that more readily follows bathymetric contours. As wind intensity on the WAP increases and sea ice decreases, the amount of ocean heat reaching ice-dependent coastal ecosystems is likely to increase. The results presented here reveal the complexity of circulation on the WAP and the importance of mesoscale observations in understanding these changes.
Subject (authority = RUETD)
Topic
Oceanography
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_8282
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (xii, 96 p. : ill.)
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Subject (authority = ETD-LCSH)
Topic
Ocean circulation--Antarctica--Antarctic Peninsula
Note (type = statement of responsibility)
by NicoleCouto
RelatedItem (type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Location
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NjNbRU
Identifier (type = doi)
doi:10.7282/T3N87DW1
Genre (authority = ExL-Esploro)
ETD doctoral
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Rights

RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Couto
GivenName
Nicole
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2017-08-08 20:34:18
AssociatedEntity
Name
Nicole Couto
Role
Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
AssociatedObject
Type
License
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Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
RightsEvent
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2017-10-31
DateTime (encoding = w3cdtf); (qualifier = exact); (point = end)
2019-10-31
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after October 31st, 2019.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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2017-08-09T18:49:04
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2017-08-09T18:49:04
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