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JDR Vol.9 No.6 pp. 954-960
(2014)
doi: 10.20965/jdr.2014.p0954

Paper:

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Tsunami Waveform Inversion of the 2007 Peru (Mw8.1) Earthquake

Cesar Jimenez*1,*2, Nabilt Moggiano*2, Erick Mas*3,
Bruno Adriano*3, Yushiro Fujii*4, and Shunichi Koshimura*3

*1Universidad Nacional Mayor de San Marcos, FENLAB Av Venezuela s/n, Lima, Perú

*2Direccion de Hidrografia y Navegacion, DHN, Chucuito-Callao, Peru

*3International Research Institute of Disaster Science, Tohoku University, Sendai, Japan

*4International Institute of Seismology and Earthquake Engineering, Building Research Institute, Ibaraki, Japan

Received:
July 1, 2014
Accepted:
September 29, 2014
Published:
December 1, 2014
Creative Commons License
Keywords:
seismic source, inversion, numerical simulation
Abstract
An earthquake shook the central-southern coast of Peru on August 15, 2007, as a coseismic effect a tsunami was generated, which flooded some villages and beach resorts and killed 3 people. From the analysis and signal processing of 10 tidal records, we obtained the parameters of the seismic source and the initial coseismic deformation through an inversion modeling, in which the synthetic signals are compared with the observed signals by a non-negative least square method. The maximum slip located on the southern part of the rupture geometry is 7.0 m. The calculated scalar seismic moment is M0 = 1.99 × 1021 Nm, equivalent to a magnitude of Mw8.1. We used these parameters to obtain a heterogeneous seismic source model, which was used as initial condition to simulate the tsunami propagation and inundation. We used the field survey observations to validate our source model.
Cite this article as:
C. Jimenez, N. Moggiano, E. Mas, B. Adriano, Y. Fujii, and S. Koshimura, “Tsunami Waveform Inversion of the 2007 Peru (Mw8.1) Earthquake,” J. Disaster Res., Vol.9 No.6, pp. 954-960, 2014.
Data files:
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