Seismic Hazard of Honduras

Diego Cáceres and Ota Kulhánek

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2000, vol. 22, issue 1, 49-69

Abstract: In this paper we have described the proceduresused, input data applied and results achieved in ourefforts to develop seismic hazard maps of Honduras.The probabilistic methodology of Cornell is employed.Numerical calculations were carried out by making useof the computer code SEISRISK III. To examine theimpact of uncertainties in seismic and structuralcharacteristics, the logic tree formalism has beenused. We compiled a de-clustered earthquake cataloguefor the region comprising 1919 earthquakes occurringduring the period from 1963 to 1997. Unified momentmagnitudes were introduced. Definition of aseismotectonic model of the whole region under review,based on geologic, tectonic and seismic information,led to the definition of seven seismogenetic zones forwhich seismic characteristics were determined. Fourdifferent attenuation models were considered. Resultsare expressed in a series of maps of expected PGA for60% and 90% probabilities of nonexceedence in a50-year interval which corresponds to return periodsof 100 and 475 years, respectively. The highest PGAvalues of about 0.4g (90% probability ofnon-exceedence) are expected along the borders withGuatemala and El Salvador. Copyright Kluwer Academic Publishers 2000

Keywords: Honduras; probabilistic seismic hazard; logic tree formalism; maximum magnitude; peak ground acceleration (search for similar items in EconPapers)
Date: 2000
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DOI: 10.1023/A:1008134030510

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