The spatio-temporal variation of seismicity before the 1971 San Fernando Earthquake, California
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چکیده
منابع مشابه
The Foreshock Activity of the 1971 San Fernando Earthquake, California by Mizuho Ishida and Hiroo Kanamori
All of the earthquakes which occurred in the epicentral area of the 1971 San Fernando earthquake during the period from 1960 to 1970 were relocated by using the master-event method. Five events from 1969 to 1970 are located within a small area around the main shock epicenter. This cluster of activity is clearly separated spatially from the activity in the surrounding area, so these five events ...
متن کاملThe Foreshock Activity of the 1971 San Fernando Earthquake, California by Mizuho Ishida and Hiroo Kanamori
All of the earthquakes which occurred in the epicentral area of the 1971 San Fernando earthquake during the period from 1960 to 1970 were relocated by using the master-event method. Five events from 1969 to 1970 are located within a small area around the main shock epicenter. This cluster of activity is clearly separated spatially from the activity in the surrounding area, so these five events ...
متن کاملGeneralized Ray Models of the San Fernando Earthquake
The exact Cagniard-de Hoop solut ions for a point dislocation in half-space are used to construct models of the strong ground motion observed during the February 9, 1971 San Fernando earthquake (PC, = 6.4). By summing point dislocations distr ibuted over the fault plane, three-dimensional models of a f inite fault located in a half-space are constructed to study the ground motions observed at J...
متن کاملA Three-dimensional Dislocation Model for the San Fernando, California, Earthquake
The data from five strong-motion accelerograph stations centered above and surrounding the fault are used to develop an approximate three-dimensiunal dislocation model for the San Fernando earthquake. In the resulting model, the dislocation originates near the instrumentally determined epicenter at a depth of 9.2 km and then propagates southward and upward with a velocity of 2 kin/see. Calculat...
متن کاملA new method to identify earthquake swarms applied to seismicity near the San Jacinto Fault, California
S U M M A R Y Understanding earthquake clustering in space and time is important but also challenging because of complexities in earthquake patterns and the large and diverse nature of earthquake catalogues. Swarms are of particular interest because they likely result from physical changes in the crust, such as slow slip or fluid flow. Both swarms and clusters resulting from aftershock sequence...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 1977
ISSN: 0094-8276
DOI: 10.1029/gl004i008p00345