Accurate ocean tide modeling in southeast Alaska and large tidal dissipation around Glacier Bay

Daisuke Inazu, Tadahiro Sato, Satoshi Miura, Yusaku Ohta, Kazuyuki Nakamura, Hiromi Fujimoto, Christopher F. Larsen, Tomoyuki Higuchi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

An accurate prediction of ocean tides in southeast Alaska is developed using a regional, barotropic ocean model with a finite difference scheme. The model skill is verified by the observational tidal harmonics in southeast Alaska including Glacier Bay. The result is particularly improved in Glacier Bay compared to the previous model described by Foreman et al. (2000). The model bathymetry dominates the model skill. We re-estimate tidal energy dissipation in the Alaska Panhandle and suggest a value for tidal energy dissipation of 3.4 GW associated with the M2 constituent which is 1.5 times the estimation of Foreman et al. (2000). A large portion of the M2 energy budget entering through Chatham Strait is dissipated in the vicinity of Glacier Bay. Moreover, it is shown that the developed model has the potential to correct the ocean tide loading effect in geodetic data more efficiently than the model of Foreman et al. (2000), especially around Glacier Bay.

Original languageEnglish
Pages (from-to)335-347
Number of pages13
JournalJournal of Oceanography
Volume65
Issue number3
DOIs
Publication statusPublished - 12 May 2009

Keywords

  • Bathymetry
  • Bottom friction
  • Glacier Bay
  • Tidal energy dissipation

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