A DEPTH-INTEGRATED EQUATION FOR LARGE SCALE MODELING OF TSUNAMI IN WEAKLY COMPRESSIBLE FLUID
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Keywords

Hydro-acoustic waves
Weakly compressible
Tsunami
Precursor

How to Cite

Abdolali, A., Cecioni, C., Bellotti, G., & Sammarco, P. (2014). A DEPTH-INTEGRATED EQUATION FOR LARGE SCALE MODELING OF TSUNAMI IN WEAKLY COMPRESSIBLE FLUID. Coastal Engineering Proceedings, 1(34), currents.9. https://doi.org/10.9753/icce.v34.currents.9

Abstract

Pressure waves generated by fast seabed movement in weakly compressible sea water, namely hydro-acoustic waves travel at the sound celerity in water (about 1500 m/s). These waves are precursors of the counterpart long free-surface gravity waves and contain significant information on the tsunamigenic source. Measurement of hydro-acoustic waves can therefore anticipate the tsunami arrival and significantly enhance the promptness and accuracy of tsunami early warning systems. In this paper derivation of a novel depth-integrated numerical model for reproduction of hydroacoustic waves is presented and the application of this computationally ecient model on two devastating historical tsunamis of Mediterranean Sea in real bathymetry analyzed to reveal the eect of variable bathymetry. On the basis of the model results, some hints for deep sea observatory are given.
https://doi.org/10.9753/icce.v34.currents.9
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References

A. Abdolali, C. Cecioni, G. Bellotti, and J. Kirby. Hydro-acoustic and tsunami waves generated by the 2012 haida gwaii earthquake: modeling and in-situ measurements. Journal of Geophysical Research: Oceans, (C010385), 2014.

A. Bolshakova, S. Inoue, S. Kolesov, H. Matsumoto, M. Nosov, and T. Ohmachi. Hydroacoustic effects in the 2003 tokachi-oki tsunami source. Russ. J. Earth Sci, 12, 2011.

C. Cecioni and G. Bellotti. Inclusion of landslide tsunamis generation into a depth integrated wave model. Natural Hazards and Earth System Science, 10(11):2259-2268, 2010a.

C. Cecioni and G. Bellotti. Modeling tsunamis generated by submerged landslides using depth integrated equations. Applied Ocean Research, 32(3):343-350, 2010b.

C. Cecioni, A. Abdolali, G. Bellotti, and P. Sammarco. Large-scale numerical modeling of hydroacoustic waves generated by tsunamigenic earthquakes. Natural Hazards and Earth System Sciences Discussions, 2(7):4629-4658, 2014a. doi: 10.5194/nhessd-2-4629-2014. URL http://www.

nat-hazards-earth-syst-sci-discuss.net/2/4629/2014/.

C. Cecioni, G. Bellotti, A. Romano, A. Abdolali, and P. Sammarco. Tsunami early warning system based on real-time measurements of hydro-acoustic waves. Procedia Engineering, 70(C):311-320, 2014b.

F. Chierici, L. Pignagnoli, and D. Embriaco. Modeling of the hydroacoustic signal and tsunami wave generated by seafloor motion including a porous seabed. Journal of Geophysical Research: Oceans (1978-2012), 115(C3), 2010.

M. Ewing, I. Tolstoy, and F. Press. Proposed use of the t phase in tsunami warning systems. Bulletin of the Seismological Society of America, 40(1):53-58, 1950.

U. Kadri and M. Stiassnie. Acoustic-gravity waves interacting with the shelf break. Journal of Geophysical Research: Oceans (1978-2012), 117(C3), 2012.

M. Nosov and S. Kolesov. Elastic oscillations of water column in the 2003 tokachi-oki tsunami source: in-situ measurements and 3-d numerical modelling. Natural Hazards and Earth System Science, 7(2): 243-249, 2007.

M. Nosov, S. Kolesov, A. Denisova, A. Alekseev, and B. Levin. On the near-bottom pressure variations in the region of the 2003 tokachi-oki tsunami source. Oceanology, 47(1):26-32, 2007.

Y. Okada. Surface deformation due to shear and tensile faults in a half-space. Bulletin of the seismological society of America, 75(4):1135-1154, 1985.

P. Sammarco, C. Cecioni, G. Bellotti, and A. Abdolali. Depth-integrated equation for large-scale modelling of low-frequency hydroacoustic waves. Journal of Fluid Mechanics, 722:R6, 2013.

B. Shaw, N. Ambraseys, P. England, M. Floyd, G. Gorman, T. Higham, J. Jackson, J.-M. Nocquet, C. Pain, and M. Piggott. Eastern mediterranean tectonics and tsunami hazard inferred from the ad 365 earthquake. Nature Geoscience, 1(4):268-276, 2008.

S. Tinti, A. Maramai, and L. Graziani. The new catalogue of italian tsunamis. Natural Hazards, 33(3): 439-465, 2004.

R. Tonini, A. Armigliato, G. Pagnoni, F. Zaniboni, and S. Tinti. Tsunami hazard for the city of catania, eastern sicily, italy, assessed by means of worst-case credible tsunami scenario analysis (wctsa). Natural Hazards and Earth System Sciences, 11:1217-1232, 2011.

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