Water level oscillations in Monterey Bay and Harbor-Reference-Cited by-同舟云学术

Water level oscillations in Monterey Bay and Harbor

Published:2014-11-20 Issue: Volume: Page:
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Author:

Park J.^ORCID,Sweet W.,Heitsenrether R.

Abstract

Abstract. Seiches are normal modes of water bodies responding to geophysical forcings with potential to significantly impact ecology and maritime operations. Analysis of high-frequency (1 Hz) water level data in Monterey California identifies Harbor modes between 10 and 120 s that are attributed with specific geographic features. It found that modal amplitude modulation arises from cross-modal interaction and that offshore wave energy is a primary driver of these modes. Synchronous coupling between modes is observed to significantly impact dynamic water levels. At lower frequencies between 15 and 60 min modes are independent of offshore wave energy, yet are continuously present. This is unexpected since seiches normally dissipate after cessation of the driving force, indicating an unknown forcing. Spectral and kinematic estimates of these low frequency oscillations supports the idea that a persistent anticyclonic mesoscale gyre adjacent to the Bay is a potential mode driver, while discounting other sources.

Publisher

Copernicus GmbH

Link

https://os.copernicus.org/preprints/11/2569/2014/osd-11-2569-2014.pdf

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