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A coral skeleton geochemical record of surface water properties in the Oman upwelling region

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TypeOfResource
Text
TitleInfo (ID = T-1)
Title
A coral skeleton geochemical record of surface water properties in the Oman upwelling region
Identifier
ETD_2826
Identifier (type = hdl)
http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000056629
Language
LanguageTerm (authority = ISO639-2); (type = code)
eng
Genre (authority = marcgt)
theses
Subject (ID = SBJ-1); (authority = RUETD)
Topic
Oceanography
Subject (ID = SBJ-2); (authority = ETD-LCSH)
Topic
Upwelling (Oceanography)--Oman, Gulf of
Subject (ID = SBJ-3); (authority = ETD-LCSH)
Topic
Upwelling (Oceanography)--Arabian Sea
Subject (ID = SBJ-4); (authority = ETD-LCSH)
Topic
Water chemistry--Oman, Gulf of
Subject (ID = SBJ-5); (authority = ETD-LCSH)
Topic
Coral reef plants)--Oman, Gulf of
Abstract (type = abstract)
Geochemical records from scleractinian corals have the potential to reconstruct surface water temperature and salinity, expanding temporal and spatial coverage beyond that available from in situ and remotely sensed data and clarifying the ocean's role in climate change. Here, I present [Greek letter delta]18O and Sr/Ca records from a Porites coral near the shelf-break off southern Oman to evaluate the potential for reconstructing monsoon upwelling histories. This sample represents growth (19 mm y⁻¹) during August 1989 to April 1996. Both [Greek letter delta]18Ocoral (-3.7 to -5.0 0/00 [subscript PDB]) and Sr/Ca (9.0 to 9.6 mmol mol[superscript-1]) records anticorrelate strongly with weekly instrumental sea-surface temperature (SST) records from several sources (IGOSS, Pathfinder 5 (Pv5) AVHRR, and COADS). A systematic comparison shows that the Pv5 AVHRR quality 3 SST dataset is the most appropriate choice for calibrating the Sr/Ca proxy, largely because of its maximal temporal coverage of demonstrably accurate data. Using the optimal calculated SST-Sr/Ca calibration of -15.525 ([plus or equal to symbol] 1.83) °C mol mmol[superscript-1] and the assumed SST-[delta]¹⁸O calibration of -4.76 ([plus or equal to symbol]0.69) °C 0/00[subscript PDB⁻¹ [Ren et al., 2002] to reconstruct the isotopic composition of the ambient seawater ([delta]¹⁸O[subscript sw]), the mean annual [delta]¹⁸O[subscript sw] variation ranges were determined to be 0.5-0.9 0/00 [subscriptPDB]. The timing and relative magnitude of these variations were consistent with known hydrography (isotopically lighter during SW monsoon, scaling with SST minima) but were greater than anticipated from observed annual salinity changes of ~1.0 and the estimated [delta]¹⁸O[subscript sw]-salinity relationship for regional surface waters. Simulations of reconstructed [delta]¹⁸O[subscript sw] using minimum SST-Sr/Ca and maximum SST-[delta]¹⁸O calibration slopes from the literature showed that the resultant mean annual range of [delta]¹⁸O[subscript sw] (0.4 0/00 [subscriptPDB]) was closer to the expected magnitude. I conclude that: (1) Sr/Ca measurements provide a very good record of SST variations, particularly the interannual variation in the SW monsoon minimum, and (2) derived [delta]¹⁸O[subscript sw] records indicate salinity variations that may be accurate in timing and relative magnitude but are unrealistically large in absolute magnitude. This coral holds strong promise for reconstructing multi-decade absolute SST and relative salinity records associated with climate-related variations in the Arabian Sea upwelling system.
PhysicalDescription
Form (authority = gmd)
electronic resource
Extent
x, 86 p. : ill.
InternetMediaType
application/pdf
InternetMediaType
text/xml
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Livia Marie Montone
Name (ID = NAME-1); (type = personal)
NamePart (type = family)
Montone
NamePart (type = given)
Livia Marie
NamePart (type = date)
1985-
Role
RoleTerm (authority = RULIB)
author
DisplayForm
Livia Montone
Name (ID = NAME-2); (type = personal)
NamePart (type = family)
Sherrell
NamePart (type = given)
Robert M
Role
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chair
Affiliation
Advisory Committee
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Robert M Sherrell
Name (ID = NAME-3); (type = personal)
NamePart (type = family)
Rosenthal
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Yair
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internal member
Affiliation
Advisory Committee
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Yair Rosenthal
Name (ID = NAME-4); (type = personal)
NamePart (type = family)
Wright
NamePart (type = given)
James D
Role
RoleTerm (authority = RULIB)
internal member
Affiliation
Advisory Committee
DisplayForm
James D Wright
Name (ID = NAME-1); (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (ID = NAME-2); (type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm (authority = RULIB)
school
OriginInfo
DateCreated (qualifier = exact)
2010
DateOther (qualifier = exact); (type = degree)
2010-10
Place
PlaceTerm (type = code)
xx
Location
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NjNbRU
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Identifier (type = doi)
doi:10.7282/T3KP81XT
Genre (authority = ExL-Esploro)
ETD graduate
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Rights

RightsDeclaration (AUTHORITY = GS); (ID = rulibRdec0006)
The author owns the copyright to this work.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
RightsHolder (ID = PRH-1); (type = personal)
Name
FamilyName
Montone
GivenName
Livia
Role
Copyright Holder
RightsEvent (ID = RE-1); (AUTHORITY = rulib)
Type
Permission or license
DateTime
2010-08-26 00:08:31
AssociatedEntity (ID = AE-1); (AUTHORITY = rulib)
Role
Copyright holder
Name
Livia Montone
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject (ID = AO-1); (AUTHORITY = rulib)
Type
License
Name
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.
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ETD
MimeType (TYPE = file)
application/pdf
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application/x-tar
FileSize (UNIT = bytes)
18657280
Checksum (METHOD = SHA1)
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