| Abstract: | The time history of energy release during earthquakes illuminates the process of failure, which remains enigmatic for events deeper than about 100 kilometers. Stacks of teleseismic records from regional arrays for 122 intermediate (depths of 100 to 350 kilometers) and deep (depths of 350 to 700 kilometers) earthquakes show that the temporal pattern of short-period seismic radiation has a systematic variation with depth. On average, for intermediate depth events more radiation is released toward the beginning of the rupture than near the end, whereas for deep events radiation is released symmetrically over the duration of the event, with an abrupt beginning and end of rupture. These findings suggest a variation in the style of rupture related to decreasing fault heterogeneity with depth.The time history of energy release during earthquakes illuminates the process of failure, which remains enigmatic for events deeper than about 100 kilometers. Stacks of teleseismic records from regional arrays for 122 intermediate (depths of 100 to 350 kilometers) and deep (depths of 350 to 700 kilometers) earthquakes show that the temporal pattern of short-period seismic radiation has a systematic variation with depth. On average, for intermediate depth events more radiation is released toward the beginning of the rupture than near the end, whereas for deep events radiation is released symmetrically over the duration of the event, with an abrupt beginning and end of rupture. These findings suggest a variation in the style of rupture related to decreasing fault heterogeneity with depth. |
| Genre: | Article |
| ProdID: | 70017559 |
| Citation Author: | Houston, H.; Vidale, J. E. |
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| Citation End Page: | 774 |
| Citation Issue: | 5173 |
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| Citation Language: | English |
| Citation Larger Work Title: | Science |
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| Citation Number Of Pages: | 4 |
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| Citation Publisher: | American Assoc for the Advancement of Science |
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| Citation Search Results Text: | The temporal distribution of seismic radiation during deep earthquake rupture; 1994; Article; Journal; Science; Houston, H.; Vidale, J. E. |
| Citation Start Page: | 771 |
| Citation Volume: | 265 |
| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | The temporal distribution of seismic radiation during deep earthquake rupture; 1994; Article; Journal; Science; Houston, H.; Vidale, J. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | American Assoc for the Advancement of Science |
