A rupture model for the 28 June 1992 Landers, California, earthquake

Details A rupture model for the 28 June 1992 Landers, California, earthquake A rupture model for the 28 June 1992 Landers, California, earthquake

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20..647c&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 8, p. 647-650.

Mathematics

Logic

12

Earth Movements, Earthquakes, Mathematical Models, Rupturing, Accelerometers, Displacement Measurement, Geological Faults, Seismograms, Surface Waves

Scientific paper

We have modeled displacement time histories to infer the large-scale rupture process of the June 28, 1992 7.4-magnitude quake at Landers, California. We have used integrated accelerograms from four TERRAscope stations at distances between 70 and 150 km. The earthquake process consists of unilateral rupture propagation, 3 km/s, on two distinct segments with different strikes: N 10 deg W and N 40 deg W. The two segments are 20 and 30 km long, with constant slip of 3.5 m and 5.2 m, respectively. The excitation of surface waves, resulting from a low-velocity surficial layer, plays a critical role in matching the synthetic waveforms to the observed displacements. The displacements, due to both body waves and surface waves, are strongly affected by directivity. Matching the synthetics to the data requires a one second delay between the end of rupture on the first segment and the initiation of rupture on the second segment. The seismic moment of the subevents are 2.8 x 10 exp 19 N-m and 8.4 x 10 exp 19 N-m, leading to a total moment of 1.12 x 10 exp 20 N-m (magnitude of 7.4).

Affiliated with

Also associated with

No associations

Rating

A rupture model for the 28 June 1992 Landers, California, earthquake does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A rupture model for the 28 June 1992 Landers, California, earthquake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A rupture model for the 28 June 1992 Landers, California, earthquake will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1371227