Recording of gravity waves formed in the ocean by surface seismic waves during the earthquake of March 11, 2011, off the coast of Japan

In the early 21st century, bottom pressure gauges began to be used extensively for recording of tsunami waves in the open ocean. The most well known net work of this kind is the DART one (Deep ocean Assessment and Reporting of Tsunamis). In the records obtained by using the DART stations or other si...

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Bibliographic Details
Published in:Doklady earth sciences 2015-04, Vol.461 (2), p.408-413
Main Authors: Nosov, M. A., Sementsov, K. A., Kolesov, S. V., Matsumoto, H., Levin, B. W.
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Earthquakes
Geophysics
Gravity
Gravity waves
Ocean floor
Pressure gauges
Seismic activity
Seismic waves
Seismology
Tsunamis
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Summary:In the early 21st century, bottom pressure gauges began to be used extensively for recording of tsunami waves in the open ocean. The most well known net work of this kind is the DART one (Deep ocean Assessment and Reporting of Tsunamis). In the records obtained by using the DART stations or other similar systems, tsunami arrival is always preceded by a high frequency noise like signal generated by seismic waves. Correct interpretation of this signal is usually complicated by both the sampling interval (15 s for the DART network) and the absence of data on seafloor motions at the point of bottom pressure gauge location.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X15040121