Source scaling telationships of microearthquakes at Parkfield, CA, determined using the SAFOD pilot hole seismic array
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Abstract
Weestimate thesourceparametersof34microearthquakes at Parkfield,CA,ranginginsizefromM-0.2 toM2.1, byanalyzingseismogramsrecorded bythe32-level, 3-componentseismic arrayinstalled in theSAFODPilotHole. Wesucceeded in obtainingstablespectral ratios by stacking theratioscalculatedfromthemovingwindowstakenalongtherecordfollowingthedirectwaves.Thesespectral ratios were modeledtodetermine seismicmoments andcornerfrequenciesassuming an omega-squared model. Static stress dropsand apparent stresses ofmicroearthquakes at Parkfielddisplay moment-independent scaling in agreementwith scaling lawsreported for moderate and large earthquakes. It is likely that thedynamics of microearthquakes at Parkfieldis macroscopicallysimilar to that oflarger tectonic earthquakes.
Study Area
| Publication type | Book chapter |
|---|---|
| Publication Subtype | Book Chapter |
| Title | Source scaling telationships of microearthquakes at Parkfield, CA, determined using the SAFOD pilot hole seismic array |
| DOI | 10.1029/170GM10 |
| Year Published | 2006 |
| Language | English |
| Publisher | American Geophysical Union |
| Contributing office(s) | Earthquake Science Center |
| Description | 10 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Monograph |
| Larger Work Title | Earthquakes: Radiated energy and the physics of faulting |
| First page | 81 |
| Last page | 90 |
| Country | United States |
| State | California |
| City | Parkland |
| Google Analytic Metrics | Metrics page |