Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3423617b&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 23, CiteID L23617
Physics
7
Oceanography: Physical: Tsunamis And Storm Surges, Oceanography: Physical: Nearshore Processes, Oceanography: Physical: Surface Waves And Tides (1222), Oceanography: Physical: Hydrodynamic Modeling
Scientific paper
During the 2006 Kuril Islands tsunami, edge waves propagating along Oahu's south shore were observed via depth-averaged ADCP velocity and pressure data acquired in real-time by a coastal observatory at 12 m depth and 400 m offshore. Time-varying rotary-component velocity spectra obtained via wavelet analysis agree with the phase lag observed between pressure and each Cartesian velocity component, in indicating the directions of rotation and travel of progressive edge waves. Furthermore, the theoretical ratios between power in the free surface elevation and in each velocity component of edge waves, agree with those observed, and a nonlinear shallow-water model shows edge waves of various modes propagating along the shore near our observation location. Importantly, the maximum surge in sea level occurred at a time when edge waves of all constituent frequencies were superposed.
Bricker Jeremy D.
Cheung Kwok Fai
Munger Sophie
Pawlak Geno
Pequignet Christine
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