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Structure and variability of internal tides in Mamala Bay, O'ahu, Hawai'i

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Title:Structure and variability of internal tides in Mamala Bay, O'ahu, Hawai'i
Authors:Eich, Michelle Lori
Contributors:Merrifield, Mark A (advisor)
Oceanography (department)
Date Issued:May 2003
Publisher:University of Hawaii at Manoa
Abstract:This thesis demonstrates, from current and temperature observations, that approximately 60% of the observed semidiurnal internal tide variance in Mamala Bay, located off the southern shore of Oʻahu, Hawaiʻi, is phase-locked to the surface tide. It is further demonstrated, using a three-dimensional numerical model, that the observed internal tide is non-locally generated in contrast to the converging barotropic tidal flow hypothesis of Hamilton [1995]. The coherent semidiurnal internal tide is observed primarily at 240 m depth in the central regions of the Bay and is partially described by a standing wave. The observations and model results support the conclusion that coherent internal wave energy generated in the deep (500-1000 m) waters of the Kauaʻi and Kaiwi Channels, as well as offshore, gets focused and amplified at the head of Mamala Bay. A westward net flux of baroclinic energy suggests the primary internal tide energy source emanates from the east side of the Bay in the Kaiwi Channel.
Description:xvii, 227 leaves
Rights:All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Appears in Collections: M.S. - Oceanography

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