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Internal and forced variability of the Equatorial Pacific on millenial and centennial time scales
Descriptive
TitleInfo
Title
Internal and forced variability of the Equatorial Pacific on millenial and centennial time scales
Name
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Kalansky
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Julie
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1981-
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Julie Kalansky
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author
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Rosenthal
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Yair
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Yair Rosenthal
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Advisory Committee
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chair
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Sherrell
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Robert
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Robert Sherrell
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Advisory Committee
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internal member
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(type = family)
Broccoli
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(type = given)
Anthony
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Anthony Broccoli
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Advisory Committee
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internal member
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(type = family)
Vecchi
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Gaberiel
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Gaberiel Vecchi
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Advisory Committee
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outside member
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Rutgers University
Role
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(authority = RULIB)
degree grantor
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Graduate School - New Brunswick
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school
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Text
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theses
OriginInfo
DateCreated
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2014
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2014-10
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2014
Place
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xx
Language
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eng
Abstract
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Although the equatorial Pacific (EP) is important to climate on interannual and decadal time scales relatively little is known about its variability and its role in the climate system on longer time scales. The main objectives of this thesis are to examine the centennial and millennial temperature variability of different regions in the EP, to determine the cause of this variability and to understand the impact of this variability on the climate system. The primary temperature proxy used is Mg/Ca from Neogloboquadrina dutertrei, a planktonic foraminifera that lives between 75-150 m. Other proxies include alkenone Uk’37 ratios to reconstruct sea surface temperature (SST) and Mg/Ca from benthic foraminifera to reconstruct bottom water temperature. Additionally, δ18O is used as a temperature and salinity proxy and δ13C is used as a water mass tracer. Reconstructions are from the eastern equatorial Pacific (EEP) in chapter 2 and 3, and the reconstruction in chapter 4 is from the Indonesian Throughflow (ITF). The second chapter focuses on the entire Holocene and the third and fourth chapters focus on the Common Era. The primary results from both locations and all timescales suggest the millennial and centennial dynamics are distinct from interannual and decadal dynamics. Prior to 8 ii kyr B.P. EEP thermostad temperatures are warm which is arguably caused by the Southern Westerly Winds being located farther South. After 8 kyr, thermostad temperatures show millennial and centennial variability, implying that in absence of a strong climate signal from the southern high latitudes, centennial variability in the EEP thermodstad is dominated by intrinsic variability. Intrinsic variability also affects SSTs in the EEP for the last 2,500 as SSTs are not responding solar variability or Northern Hemisphere temperatures. In the ITF, thermocline temperatures vary due to modulations in the regional monsoon. Neither data from the EEP nor ITF indicate that ENSO modulations are influencing centennial variability. The results from both regions caution against using ENSO to explain centennial variability and suggest the role of the EP in the climate system on centennial and longer time scales is more moderate than on interannual to decadal time scales.
Subject
(authority = RUETD)
Topic
Oceanography
Subject
(authority = ETD-LCSH)
Topic
Paleoceanography--Pacific Area
Subject
(authority = ETD-LCSH)
Topic
Climatic changes
Subject
(authority = ETD-LCSH)
Topic
Tropics--Climate
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Rutgers University Electronic Theses and Dissertations
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ETD_5825
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electronic resource
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application/pdf
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text/xml
Extent
1 online resource (xii, 139 p. : ill.)
Note
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Ph.D.
Note
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Includes bibliographical references
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by Julie Kalansky
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Title
Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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doi:10.7282/T3WW7G4C
Genre
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ETD doctoral
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Rights
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The author owns the copyright to this work.
RightsHolder
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Name
FamilyName
Kalansky
GivenName
Julie
Role
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RightsEvent
Type
Permission or license
DateTime
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2014-09-10 12:52:47
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Name
Julie Kalansky
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Affiliation
Rutgers University. Graduate School - New Brunswick
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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.
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2014-10-31
DateTime
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2015-10-31
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after October 31st, 2015.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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windows xp
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