| Abstract: | We analyzed spectra of local microearthquakes recorded at the Anza, California, seismic network to isolate the effects of site response and to investigate the scaling of source parametrs for small earthquakes. Spectra of microearthquakes (M<2; Mo<1019 dyne-cm) at Anza have shapes characteristic of the receiver sites and are generally independent of the source region. Thus, the site response is a major conditioner of the observed spectral shape. To remove the effects of site response from the spectra of a M ~3 event and isolate its source spectrum, we divided by the spectra of an adjacent aftershock used as an empirical Green‘s function event. The spectral ratios display remarkable agreement between sites which showed vast differences in their original spectra, indicating that the spectral division effectively removed the site response. -from Authors |
| Genre: | Article |
| ProdID: | 70015749 |
| Citation Author: | Frankel, A.; Wennerberg, L. |
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| Citation End Page: | 609 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Bulletin - Seismological Society of America |
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| Citation Number Of Pages: | 29 |
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| Citation Search Results Text: | Microearthquake spectra from the Anza, California, seismic network: site response and source scaling; 1989; Article; Journal; Bulletin - Seismological Society of America; Frankel, A.; Wennerberg, L. |
| Citation Start Page: | 581 |
| Citation Volume: | 79 |
| Citation Year: | 1989 |
| Type: | citation/reference |
| Text: | Microearthquake spectra from the Anza, California, seismic network: site response and source scaling; 1989; Article; Journal; Bulletin - Seismological Society of America; Frankel, A.; Wennerberg, L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sun, 1 Jan 1989 00:00 -0600 |
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