Deep-Ocean Measurements of Tsunami Waves

Deep-ocean tsunami measurements play a major role in understanding the physics of tsunami wave generation and propagation, and in improving the effectiveness of tsunami warning systems. This paper provides an overview of the history of tsunami recording in the open ocean from the earliest days, appr...

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Bibliographic Details
Published in:Pure and applied geophysics 2015-12, Vol.172 (12), p.3281-3312
Main Authors: Rabinovich, Alexander B., Eblé, Marie C.
Format: Article
Language:English
Subjects:
Coastal areas
Coastal zone
Earth and Environmental Science
Earth Sciences
Geophysics
Geophysics/Geodesy
Marine
Monitoring
Noise
Ocean floor
Oceans
Recording
Sea level
Tsunami waves
Tsunamis
Warning systems
Wave propagation
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Summary:Deep-ocean tsunami measurements play a major role in understanding the physics of tsunami wave generation and propagation, and in improving the effectiveness of tsunami warning systems. This paper provides an overview of the history of tsunami recording in the open ocean from the earliest days, approximately 50 years ago, to the present day. Modern tsunami monitoring systems such as the self-contained Deep-ocean Assessment and Reporting of Tsunamis and innovative cabled sensing networks, including, but not limited to, the Japanese bottom cable projects and the NEPTUNE-Canada geophysical bottom observatory, are highlighted. The specific peculiarities of seafloor longwave observations in the deep ocean are discussed and compared with observations recorded in coastal regions. Tsunami detection in bottom pressure observations is exemplified through analysis of distant (22,000 km from the source) records of the 2004 Sumatra tsunami in the northeastern Pacific.
ISSN:0033-4553
1420-9136
DOI:10.1007/s00024-015-1058-1