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Large-scale numerical modeling of hydro-acoustic waves generated by tsunamigenic earthquakes
- Source :
- Natural Hazards and Earth System Sciences, Vol 15, Iss 3, Pp 627-636 (2015)
- Publication Year :
- 2015
-
Abstract
- Tsunamigenic fast movements of the seabed generate pressure waves in weakly compressible seawater, namely hydro-acoustic waves, which travel at the sound celerity in water (about 1500 m s−1). These waves travel much faster than the counterpart long free-surface gravity waves and contain significant information on the source. Measurement of hydro-acoustic waves can therefore anticipate the tsunami arrival and significantly improve the capability of tsunami early warning systems. In this paper a novel numerical model for reproduction of hydro-acoustic waves is applied to analyze the generation and propagation in real bathymetry of these pressure perturbations for two historical catastrophic earthquake scenarios in Mediterranean Sea. The model is based on the solution of a depth-integrated equation, and therefore results are computationally efficient in reconstructing the hydro-acoustic waves propagation scenarios.
- Subjects :
- Scale (ratio)
wave propagation
lcsh:TD1-1066
earthquake mechanism
Settore ICAR/01 - Idraulica
Physics::Geophysics
symbols.namesake
Mediterranean sea
Bathymetry
lcsh:Environmental technology. Sanitary engineering
Rayleigh wave
lcsh:Environmental sciences
Seabed
seawater
lcsh:GE1-350
acoustic wave
Gravitational wave
lcsh:QE1-996.5
lcsh:Geography. Anthropology. Recreation
Acoustic wave
lcsh:Geology
lcsh:G
wave generation
Compressibility
symbols
General Earth and Planetary Sciences
early warning system
numerical model
tsunami
Earth and Planetary Sciences (all)
Seismology
Geology
Subjects
Details
- Language :
- English
- ISSN :
- 16849981
- Database :
- OpenAIRE
- Journal :
- Natural Hazards and Earth System Sciences, Vol 15, Iss 3, Pp 627-636 (2015)
- Accession number :
- edsair.doi.dedup.....cba1b63d5cb022b8c63a9cb7cf7cca7c