Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/5215

Authors: Chierici, F.*
Pignagnoli, L.*
Embriaco, D.*
Title: Modelling of the hydro-acoustic signal and tsunami wave generated by sea floor motion including a porous seabed
Title of journal: Journal of Geophysical Research
Series/Report no.: / (2009)
Publisher: AGU
Issue Date: Oct-2009
DOI: 10.1029/2009JC005522
Keywords: tsunami generation
seafloor motion
fluidodynamics
Abstract: Within the framework of a 2-D compressible tsunami generation model with a flat porous seabed, acoustic waves are generated and travel outwards from the source area. The effects of the porous seabed during tsunami generation and propagation processes include wave amplitude attenuation and low pass filtering of both the hydro-acoustic signal and tsunami wave. The period of the acoustic wave generated by the seafloor motion depends on water depth over the source area and is given by four times the period of time required for sound to travel from the sea bed to the surface: these waves carry information about seafloor motion. The semi-analytical solution of the 2-D compressible water layer model overlying a porous seabed is presented and discussed. Furthermore, to include the effects generated by the coupling between compressible porous sedimentary and water layers, a simplified two layer model with the sediment modelled as a compressible viscous fluid is presented.
Appears in Collections:05.06.99. General or miscellaneous
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
2009JC005522-pip.pdfmain article1.56 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Share this record
Del.icio.us

Citeulike

Connotea

Facebook

Stumble it!

reddit


 

Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA