NEHRP Clearinghouse
- Title
- Earthquake Rate Model 2.2 of the 2007 Working Group for California Earthquake Probabilities. Appendix D. Magnitude-Area Relationships.
- File
- PB2007112965.pdf
- Author(s)
- Stein, R. S.
- Source
- January 2007, 13 p.
- Identifying Number(s)
- USGS-OFR-2007-1162
- Abstract
- To estimate the down-dip coseismic fault dimension, W, the Executive Committee has chosen the Nazareth and Hauksson (2004) method, which uses the 99% depth of background seismicity to assign W. For the predicted earthquake magnitude-fault area scaling used to estimate the maximum magnitude of an earthquake rupture from a fault's length, L, and W, the Committee has assigned equal weight to the Ellsworth B (Working Group on California Earthquake Probabilities, 2003) and Hanks and Bakun (2002) (as updated in 2007) equations. The former uses a single relation; the latter uses a bilinear relation which changes slope at M=6.65 (A=537 km2).
- Keywords
- ; Probability; Geologic faults; Seismic events; California; Mathematical models; Magnitude; Ground motion; Estimation; Meetings; Earthquakes