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Northwest Swell Variability at the Hawaiian Islands.

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Title:Northwest Swell Variability at the Hawaiian Islands.
Authors:Agustin, Alyssa E.
Contributors:Oceanography (department)
Date Issued:Aug 2017
Publisher:University of Hawaiʻi at Mānoa
Abstract:The influence of Pacific climate variability on the wind wave field at Hawai‘i
is examined by identifying the regional winds that are most influential in driving
waves in the winter. We demonstrate how the ESTELA (a method for Evaluating
the Source and Travel-time of the wave Energy reaching a Local Area) model can be
used to identify source regions using wave buoys around the islands for initialization
and validation. We examine changes in the source wind field that drive the dominant
northwest swell energy that arrives during winter months, and compare these
variations with the prominent climate modes and storm tracks of the north Pacific.
A case study of the impact of variations in the energy flux is conducted at Baldwin
Beach on the north shore of Maui Island. We find that northwest winter swells are
closely related to the North Pacific Index, sea level pressure at 42.5 N, 150 W, an
increase in the number of extratropical storms, more southerly storm tracks, and an
intensified east asian jet stream.
Description:M.S. Thesis. University of Hawaiʻi at Mānoa 2017.
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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