Physics
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.3533h&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 18, p. 3533-3536
Physics
8
Oceanography: Physical: Tsunamis And Storm Surges, Seismology: Earthquake Parameters, Seismology: Seismicity And Seismotectonics, Information Related To Geographic Region: Asia
Scientific paper
A micro tsunami from an interplate earthquake (Mw 6.1) was observed in 1998 on ocean bottom tsunami meters (OBTMs) deployed east off the northeastern Japan. The offshore tsunami data without complex distortions due to the coastal topography enable us to estimate reliable tsunami source parameters. The observed amplitude was about 1.5 cm at epicentral distance less than 100 km. We numerically computed the tsunami waveform by solving the linear Boussinesq equations. The observed tsunami wave-forms are well explained by synthetic waveforms assuming the fault width of 10-15 km. The depth of the fault is estimated as 5-10 km below the seafloor, which is in good agreement with the location of the plate boundary defined by previous seismic studies.
Hino Ryota
Kanazawa Takuya
Nishino Masamichi
Sakai Shoko
Suyehiro Kiyoshi
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