자료유형  

 학위논문

Control Number  

0016931396

International Standard Book Number  

9798379761974

Dewey Decimal Classification Number  

551.46

Main Entry-Personal Name  

Kachelein, Luke.

Publication, Distribution, etc. (Imprint  

[S.l.] : University of California, San Diego., 2023

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2023

Physical Description  

1 online resource(162 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-01, Section: B.

General Note  

Advisor: Gille, Sarah T.;Mazloff, Matthew R.

Dissertation Note  

Thesis (Ph.D.)--University of California, San Diego, 2023.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약The surface layer of the ocean is a critical component of the ocean-atmosphere system. The momentum and heat transfer that occur here, as well as tidal forcing, result in energetic currents across a wide range of length and time scales. Because the surface is observable from land and space, it is the subject of extensive study from land-based and satellite observation systems. Only recently, however, have spatial resolutions from satellite instruments approached the submesoscale, which evolves at time scales comparable to or faster than repeat orbit sampling rates. At the same time, land-based radar networks have matured such that more than a decade of surface current observations at kilometer scale resolution are available from many regions around the world, unconstrained by the timing of orbits that affect satellites but are limited to coastlines. This leads to the central motivating question that this dissertation seeks to address: what can coastal radar data reveal about short time scale processes that could be useful to the goals of recent and upcoming Earth observation satellite missions? This work is limited to examining the surface expression of internal tides and diurnal wind-driven currents, as both are energetic processes at known frequencies, lending themselves well to harmonic analysis.In Chapter 1, a novel tidal harmonic analysis method is presented, following from previous tidal analysis and incorporating Bayesian principles and prior statistics to inform the least squares fitting procedure. This method is applied in Chapter 2 to high-frequency radar data from the California Current System in order to characterize tidal currents in that region, finding a phase structure indicative of internal tidal propagation and a complicated spatial distribution of the fraction of tidal energy deemed to result from modulation by other processes in the ocean. Finally, Chapter 3 uses the same method on currents and winds in order to characterize the diurnal wind-driven current, finding the times of day that these quantities peak, their level of coherence, and the angle between them as a function of frequency. These chapters provide a detailed view of these processes in a well-studied coastal region, with implications for satellite oceanography.

Subject Added Entry-Topical Term  

Physical oceanography.

Subject Added Entry-Topical Term  

Geophysics.

Subject Added Entry-Topical Term  

Alternative energy.

Index Term-Uncontrolled  

Bayesian principles

Index Term-Uncontrolled  

Currents

Index Term-Uncontrolled  

Harmonic analysis

Index Term-Uncontrolled  

Oceanography

Index Term-Uncontrolled  

Tides

Index Term-Uncontrolled  

Wind-driven

Added Entry-Corporate Name  

University of California, San Diego Scripps Institution of Oceanography

Host Item Entry  

Dissertations Abstracts International. 85-01B.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:643373