Dissertation/Thesis Abstract

Tidal Constituent Variations along United States Coastlines
by Guruvadoo, Shan, M.S.I.E.S., Bethune-Cookman University, 2019, 223; 13864630
Abstract (Summary)

Recent study of increase in sea level has attributed sea level rise to the thermal expansion of oceans, glacial melting, and added variability from ocean-atmosphere circulation dynamics. Changes in tide range can affect flooding that occurs with subsequent rise in Relative Sea Level. Frequencies of tidal energy are represented by harmonic constituents which have an amplitude and phase lag. Five of the most energetic constituents (M2, S2, O1, K1, and M4) were selected for study in 89 locations across the United States and its territories. Principal lunar semidiurnal constituent M2, principal solar semidiurnal constituent S2, and lunar diurnal constituents O1 and K1 are energetic constituents in a water-level signal. Shallow-water constituent M4 is an indicator of bathymetric variations influencing tidal processes. Constituents were resolved with harmonic analysis and correlated with tidal datums Mean Sea Level (MSL) and Mean Higher High Water (MHHW). Results suggest that constituent behavior differs by individual station with little correlation to MSL. Despite spatial patterns found in some water bodies, the results suggest that local hydrodynamics can affect temporal change in constituents. Further study on constituent behavior is suggested to include hydrodynamic models that compensate for the absence of in-situ data near tide gauges.

Indexing (document details)
Advisor: Tinus, Craig
Commitee: Reiter, Michael, Krejci, Sarah, Isokpehi, Raphael, Dusek, Gregory
School: Bethune-Cookman University
Department: School of Graduate and Professional Studies
School Location: United States -- Florida
Source: MAI 81/4(E), Masters Abstracts International
Subjects: Environmental science, Physical oceanography
Keywords: Channel deepening, Harmonic constituents, Sea level rise, Tidal range
Publication Number: 13864630
ISBN: 9781392821480
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