An experiment in systematic study of global seismicity: centroid- moment tensor solutions for 201 moderate and large earthquakes in 1981.

Journal article

Data from the Global Digital Seismograph Network were used to obtain 'centroid-moment tensor' solutions using the method of Dziewonski et al (1981). Results were obtained for 201 earthquakes ranging in seismic moment from 7 X 1023-3 X 1027 dyne-cm. The wide dynamic range of the SRO/ASRO stations allows us to investigate, using the same algorithm, series of events among which the smallest and the largest may differ in moment by a factor as large as 1000. Among the events studied is a particularly interesting series, in January 1981, off the island of Honshu. The main shock was preceded by three foreshocks and followed by four aftershocks all falling within the range of our analysis. There is an indication that the source mechanism changes with the size of the event. -Authors

Authors: Dziewonski, A; Woodhouse, J

• Journal: Journal of Geophysical Research
• Volume: 88
• Issue: B4
• Pages: 3247-3271
• Publication date: 1983-01-01
• ISSN: 0148-0227
• Language: English