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A probabilistic calculation of seismic hazard of southern Spain

✍ Scribed by D. Mun˜oz; D. Mayer-Rosa; E. Banda; A. Udias

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
831 KB
Volume
20
Category
Article
ISSN
0013-7952

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✦ Synopsis

A probabilistic study of seismic hazard in southern Spain has been carried out on the basis of existing earthquake catalogues. The method uses quadratic frequency-intensity distributions determined for each of the eight seismogenetic sources and azimuth dependent intensity attenuation derived from isoseismal maps. The seismic hazard was calculated for each site of a 15 × 15 km grid assuming a Poisson distribution for strong events. The important new results in this investigation are that the highest hazard is found in the area of Alicante--Murcia followed by the area of Granada, with MSK-intensities of IX--X and IX for a 0.001 probability of occurrence per year, resp. The area of Alicante--Murcia is characterized tectonically by the conjunction of two major fault zones and the area of Granada by a number of en echelon extensional features.

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