Coastal Structures and Solutions to Coastal Disasters Joint Conference 2015
Hydro-Acoustic Wave Generation during the Tohoku-Oki 2011 Earthquake
Publication: Coastal Structures and Solutions to Coastal Disasters 2015: Tsunamis
ABSTRACT
We investigate the surface gravity and hydro-acoustic wave fields, generated by the 2011 Tohoku-Oki tsunamigenic event using a numerical model based on a computationally efficient depth-integrated equations for a compressible water column coupled to a dissipative sedimentary layers. Spectral analysis of bottom pressure time series obtained in deep water revealed the role of underlying layer on the formation of hydro-acoustic waves and carrying frequency range, damping and trapping behaviors. The presented methodology can enhance the promptness and the accuracy of tsunami early warning systems (TEWS).
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ACKNOWLEDGMENTS
The authors acknowledge the support of the National Tsunami Hazard Mitigation Program, NOAA, grants NA14NWS4670041 and NA15NWS4670029 and the NSF ENH program, grant CMMI-1537232.
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Published In
Coastal Structures and Solutions to Coastal Disasters 2015: Tsunamis
Pages: 24 - 34
Editors: Louise Wallendorf, U.S. Naval Academy and Daniel T. Cox, Ph.D., Oregon State University
ISBN (Online): 978-0-7844-8031-1
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© 2017 American Society of Civil Engineers.
History
Published online: Jul 11, 2017
Published in print: Jul 11, 2017
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