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A Numerical Investigation of Boumerdes-Zemmouri (Algeria) Earthquake and Tsunami

Xiaoming Wang1, Philip L.-F. Liu1
School of Civil and Environmental Engineering, Cornell University, Ithaca, New York 14853

Computer Modeling in Engineering & Sciences 2005, 10(2), 171-184. https://doi.org/10.3970/cmes.2005.010.171

Abstract

On May 21, 2003 Boumerdes-Zemmouri (Algeria) earthquake generated a small tsunami, which was recorded at several locations around the coast of Balearic Islands, Spain. Recent field studies (Meghraoui, et al., 2004) and teleseismic wave analysis (Yiga, 2003) indicated that the earthquake magnitude is stronger than that suggested by the Harvard CMT solution. Moreover, the seafloor displacement is also not uniform along the rupture line. In this paper, we perform a numerical investigation to evaluate the accuracy of various suggested fault plane mechanisms. The numerical model is based on the shallow-water equations and numerical results are compared with the measured wave heights at San Antonio and Ibiza, Spain. The sensitivity of fault plane parameters is also examined. Our simulations show that the fault plane mechanism proposed by Meghraoui, et al. gives much better tsunami wave height predictions than that of Harvard CMT solution, although some discrepancies still exist. Using an inversion method with the tide gage measurements at San Antonio, we further improve the fault plane model, which is further validated with the data taken at Ibiza. Our new fault plane model suggests a stronger earthquake with larger seafloor uplifts.

Cite This Article

Wang, X., Liu, P. L. (2005). A Numerical Investigation of Boumerdes-Zemmouri (Algeria) Earthquake and Tsunami. CMES-Computer Modeling in Engineering & Sciences, 10(2), 171–184.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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