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

Proceedings of the International Conference on Coastal Engineering

Giorgio Bellotti¹  Paolo Sammarco²  Ali Abdolali¹  Claudia Cecioni¹ 

[1] University of Rome TRE;University of Rome Tor Vergata

关键词: Hydro-acoustic waves;    Weakly compressible;    Tsunami;    Precursor;   

DOI  :  10.9753/icce.v34.currents.9

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

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.

【 授权许可】

Unknown