Body and surface wave study of source parameters of the March 15, 1964 Spanish earthquake
1970; Elsevier BV; Volume: 9; Issue: 4 Linguagem: Inglês
10.1016/0040-1951(70)90034-x
ISSN1879-3266
AutoresAgustín Udías, A. López Arroyo,
Tópico(s)Geophysics and Sensor Technology
ResumoThe mechanism of the Spanish earthquake of March 15, 1964 has been investigated by means of body and surface waves. The double-couple source orientation obtained from the body-wave analysis agrees with the Rayleigh waves radiation pattern which selects the plane of faulting as that striking N 65°E and dipping 80° NE. This direction agrees with the strike of the Guadalquivir fault and with that of the faults transverse to the Mid-Atlantic Ridge. The dimension of the fault obtained from the directivity function points to a fault length of 95 km and rupture velocity of 1.4 km/sec. Other parameters of the fault such as the total moment and the stress drop have also been determined.
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