| Abstract: | We address the following two questions. Can a microearthquake‘s ground motions be modeled by incident P and S waves that excite a site transfer-function that is a smooth function of incidence angle? Given recorded ground motions from a set of earthquakes having known locations and mechanisms, can we derive such a site transfer-function and use it to obtain the ground motions that would result from an earthquake source occurring somewhere in the same volume but having a location and mechanism that are different from the recorded events? We express the site transfer-function as a sum of several terms having simple dependences upon incidence angle and azimuth. Each term is an independent function of time. Given a set of seismograms observed at the site, we solve a linear system of equations for the time dependences of each term. These time series may be used to calculate the seismograms that would have resulted from an earthquake having arbitrary mechanism and location. This step is an interpolation. We have applied this technique to seismograms after aftershocks of the 1986 North Palm Springs earthquake. -from Authors |
| Genre: | Article |
| ProdID: | 70015927 |
| Citation Author: | Spudich, P.; Miller, D. P. |
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| Citation End Page: | 1532 |
| Citation Issue: | 6 A |
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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: | Seismic site effects and the spatial interpolation of earthquake seismograms: results using aftershocks of the 1986 North Palm Springs, California, earthquake; 1990; Article; Journal; Bulletin - Seismological Society of America; Spudich, P.; Miller, D. P. |
| Citation Start Page: | 1504 |
| Citation Volume: | 80 |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Seismic site effects and the spatial interpolation of earthquake seismograms: results using aftershocks of the 1986 North Palm Springs, California, earthquake; 1990; Article; Journal; Bulletin - Seismological Society of America; Spudich, P.; Miller, D. P. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1990 00:00 -0600 |
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