Registration of the Simushir and Nevelsk tsunamis in the port of Kholmsk |
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Authors: | P D Kovalev G V Shevchenko D P Kovalev A G Chernov D Ye Zolotukhin |
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Institution: | (1) Russian Academy of Sciences, Institute of Marine Geology and Geophysics (IMGG), Nauki str. 1b, Yuzhno-Sakhalinsk, Russia |
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Abstract: | The November 16, 2006, Simushir and August 2, 2007, Nevelsk tsunami records obtained by bottom pressure gauges in Kholmsk
Bay are analyzed. The dominant role of the zero mode of eigen oscillations in the bay during the the wave field formation
is shown: in the initial record interval (for the remote tsunami source) and 1.5 h after the first wave (for the nearly tsunami).
Numerical modeling showed that the longer waves propagated toward Kholmsk in the case of the Nevelsk earthquake and they did
not generate eigen oscillations of the bay. These oscillations were generated 1.5 h later when the shorter waves reflected
from the Primorye coast arrived. |
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