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Generation of Cold Core Filaments and Eddies Through Baroclinic Instability on a Continental Shelf

Title: Generation of Cold Core Filaments and Eddies Through Baroclinic Instability on a Continental Shelf.
Name(s): Kvaleberg, Erik, author
O’Brien, James J., professor directing dissertation
Blumsack, Steven L., outside committee member
Nof, Doron, committee member
Clarke, Allan J., committee member
Landing, William, committee member
Morey, Steven L., committee member
Department of Earth, Ocean and Atmospheric Sciences, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: text
Issuance: monographic
Date Issued: 2004
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
Physical Form: online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: The formation of cold core filaments on an idealized continental shelf is investigated using a numerical model to simulate the ocean's response to surface cooling. A horizontal density gradient forms because of uneven buoyancy loss due to the sloping bottom, and this gradient induces an alongshelf current in thermal wind balance, that in time becomes unstable. As the instabilities grow, filaments, and later eddies, are generated so that dense water near the coast is mixed offshore. Scaling arguments of the filament wavelength indicate that the current is baroclinically unstable, and an analytical model of the frontal expansion with time is in very good agreement with the simulations. This study was inspired by satellite observations of sea surface temperature on the West Florida Shelf during the winter months, in which it is clearly seen that cold core filaments extend from a thermal front. Numerical experiments are therefore designed to allow for reliable comparisons with conditions in this region.
Identifier: FSU_migr_etd-3022 (IID)
Submitted Note: A Dissertation submitted to the Department of Oceanography in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
Degree Awarded: Spring Semester, 2004.
Date of Defense: December 5, 2003.
Keywords: Eddies, Baroclinic Instability, Filaments, Numerical Modeling, Shelf
Bibliography Note: Includes bibliographical references.
Advisory Committee: James J. O’Brien, Professor Directing Dissertation; Steven L. Blumsack, Outside Committee Member; Doron Nof, Committee Member; Allan J. Clarke, Committee Member; William Landing, Committee Member; Steven L. Morey, Committee Member.
Subject(s): Oceanography
Atmospheric sciences
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Owner Institution: FSU