Research output: Contribution to journal › Article › peer-review
Inversion method for initial tsunami waveform reconstruction. / Voronin, V. V.; Voronina, T. A.; Tcheverda, V. A.
In: Natural Hazards and Earth System Sciences, Vol. 15, No. 6, 16.06.2015, p. 1251-1263.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Inversion method for initial tsunami waveform reconstruction
AU - Voronin, V. V.
AU - Voronina, T. A.
AU - Tcheverda, V. A.
PY - 2015/6/16
Y1 - 2015/6/16
N2 - This paper deals with the application of the r-solution method to recover the initial tsunami waveform in a tsunami source area by remote water-level measurements. Wave propagation is considered within the scope of a linear shallow-water theory. An ill-posed inverse problem is regularized by means of least square inversion using a truncated SVD (singular value decomposition) approach. The method presented allows one to control instability of the numerical solution and to obtain an acceptable result in spite of ill-posedness of the problem. It is shown that the accuracy of tsunami source reconstruction strongly depends on the signal-to-noise ratio, the azimuthal coverage of recording stations with respect to the source area and bathymetric features along the wave path. The numerical experiments were carried out with synthetic data and various computational domains including a real bathymetry.
AB - This paper deals with the application of the r-solution method to recover the initial tsunami waveform in a tsunami source area by remote water-level measurements. Wave propagation is considered within the scope of a linear shallow-water theory. An ill-posed inverse problem is regularized by means of least square inversion using a truncated SVD (singular value decomposition) approach. The method presented allows one to control instability of the numerical solution and to obtain an acceptable result in spite of ill-posedness of the problem. It is shown that the accuracy of tsunami source reconstruction strongly depends on the signal-to-noise ratio, the azimuthal coverage of recording stations with respect to the source area and bathymetric features along the wave path. The numerical experiments were carried out with synthetic data and various computational domains including a real bathymetry.
UR - http://www.scopus.com/inward/record.url?scp=84935016093&partnerID=8YFLogxK
U2 - 10.5194/nhess-15-1251-2015
DO - 10.5194/nhess-15-1251-2015
M3 - Article
AN - SCOPUS:84935016093
VL - 15
SP - 1251
EP - 1263
JO - Natural Hazards and Earth System Sciences
JF - Natural Hazards and Earth System Sciences
SN - 1561-8633
IS - 6
ER -
ID: 25778691