Open AccessNumerical modeling of the 2015 Illapel Tsunami source by the inversion of DART buoys data
Author(s) -
Т. А. Воронина,
А. В. Лоскутов
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/324/1/012015
Subject(s) - inversion (geology) , waveform , inverse problem , geology , numerical modeling , instability , tsunami wave , seismology , meteorology , geodesy , geophysics , computer science , physics , mechanics , mathematical analysis , mathematics , telecommunications , radar , tectonics
The problem of the tsunami source reconstruction from the remote measurements of an arriving waves in the deep-water tsunamimeters is considered as an inverse problem of mathematical physics in the class of the ill-posed problems. The latter determines the inevitable instability of the numerical solution. We propose a method providing more control on the numerical instability of the solution. The DART buoys data allows one to apply the linear shallow-water theory for the wave propagation and the r -solution method for the tsunami waveform inversion. The applied approach is independent from the earthquake source characteristics, because the only observed tsunami waveforms and a roughly estimated tsunami source area are used. A good coincidence of observed and computed tsunami waveforms was a criterion of the quality of the inversion. In this paper we study the 16 September 2015 Illapel (Chile) event and conduct a reconstruction of a tsunami source.