Related Content
Search Google Scholar for:
|
|
Science 17 August 1990:
Vol. 249. no. 4970, pp. 763 - 766
DOI: 10.1126/science.249.4970.763
|
|
Articles
Seismic Trapped Modes in the Oroville and San Andreas Fault Zones
Yong-Gang Li 1,
Peter Leary 1,
Keiiti Aki 1, and
Peter Malin 2
1 Department of Geological Sciences, University of Southern California, Los Angeles, CA 90089
2 Department of Geological Sciences, University of California, Santa Barbara, CA 93106
Three-component borehole seismic profiling of the recently active Oroville, California, normal fault and microearthquake event recording with a near-fault three-component borehole seismometer on the San Andreas fault at Parkfield, California, have shown numerous instances of pronounced dispersive wave trains following the shear wave arrivals. These wave trains are interpreted as fault zone-trapped seismic modes. Parkfield earthquakes exciting trapped modes have been located as deep as 10 kilometers, as shallow as 4 kilometers, and extend 12 kilometers along the fault on either side of the recording station. Selected Oroville and Parkfield wave forms are modeled as the fundamental and first higher trapped SH modes of a narrow low-velocity layer at the fault. Modeling results suggest that the Oroville fault zone is 18 meters wide at depth and has a shear wave velocity of 1 kilometer per second, whereas at Parkfield, the fault gouge is 100 to 150 meters wide and has a shear wave velocity of 1.1 to 1.8 kilometers per second. These low-velocity layers are probably the rupture planes on which earthquakes occur.
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
- Mapping stress and structurally controlled crustal shear velocity anisotropy in California.
- N. L. Boness and M. D. Zoback (2006)
Geology
34, 825-828
| Abstract »
| Full Text »
| PDF »
- Kinematic Inversion of the 2004 M 6.0 Parkfield Earthquake Including an Approximation to Site Effects.
- P. Liu, S. Custodio, and R. J. Archuleta (2006)
Bulletin of the Seismological Society of America
96, S143-S158
| Abstract »
| Full Text »
| PDF »
- Seismic Evidence for Rock Damage and Healing on the San Andreas Fault Associated with the 2004 M 6.0 Parkfield Earthquake.
- Y.-G. Li, P. Chen, E. S. Cochran, J. E. Vidale, and T. Burdette (2006)
Bulletin of the Seismological Society of America
96, S349-S363
| Abstract »
| Full Text »
| PDF »
- Asperity Model of an Earthquake: Dynamic Problem.
- L. R. Johnson and R. M. Nadeau (2005)
Bulletin of the Seismological Society of America
95, 75-108
| Abstract »
| Full Text »
| PDF »
- Seismic Velocity Models for the Denali Fault Zone along the Richardson Highway, Alaska.
- T. M. Brocher, G. S. Fuis, W. J. Lutter, N. I. Christensen, and N. A. Ratchkovski (2004)
Bulletin of the Seismological Society of America
94, S85-S106
| Abstract »
| Full Text »
| PDF »
- Seismological Studies at Parkfield IX: Fault-Zone Imaging Using Guided Wave Attenuation.
- (2003)
Bulletin of the Seismological Society of America
93, 1415-1426
- Can Seismic Waves Be Trapped inside an Inactive Fault Zone? The Case Study of Nocera Umbra, Central Italy.
- (2002)
Bulletin of the Seismological Society of America
92, 2217-2232
- Study of the 1999 M 7.1 Hector Mine, California, Earthquake Fault Plane by Trapped Waves.
- (2002)
Bulletin of the Seismological Society of America
92, 1318-1332
- Displaced Rocks, Strong Motion, and the Mechanics of Shallow Faulting Associated with the 1999 Hector Mine, California, Earthquake.
- (2002)
Bulletin of the Seismological Society of America
92, 1561-1569
- Geodetic Evidence for a Near-Fault Compliant Zone along the San Andreas Fault in the San Francisco Bay Area.
- (2002)
Bulletin of the Seismological Society of America
92, 656-671
- Shallow Seismic Profiling of the Exhumed Punchbowl Fault Zone, Southern California.
- (2001)
Bulletin of the Seismological Society of America
91, 1820-1830
- Steep-Dip Seismic Imaging of the Shallow San Andreas Fault Near Parkfield.
- J. A. Hole, R. D. Catchings, K. C. St. Clair, M. J. Rymer, D. A. Okaya, and B. J. Carney (2001)
Science
294, 1513-1515
| Abstract »
| Full Text »
| PDF »
- Damage and Ground Shaking in the Town of Nocera Umbra during Umbria-Marche, Central Italy, Earthquakes: The Special Effect of a Fault Zone.
- (2001)
Bulletin of the Seismological Society of America
91, 511-519
- Effects of a low-velocity zone on a dynamic rupture.
- R. A. Harris and S. M. Day (1997)
Bulletin of the Seismological Society of America
87, 1267-1280
| Abstract »
| PDF »
- Laboratory studies of seismic wave propagation in inhomogeneous media using a laser doppler vibrometer.
- O. Nishizawa, T. Satoh, X. Lei, and Y. Kuwahara (1997)
Bulletin of the Seismological Society of America
87, 809-823
| Abstract »
| PDF »
- Fault-zone guided waves from explosions in the San Andreas fault at Parkfield and Cienega Valley, California.
- Y.-G. Li, W. L. Ellsworth, C. H. Thurber, P. E. Malin, and K. Aki (1997)
Bulletin of the Seismological Society of America
87, 210-221
| Abstract »
| PDF »
- Low-velocity fault-zone guided waves: Numerical investigations of trapping efficiency.
- Y.-G. Li and J. E. Vidale (1996)
Bulletin of the Seismological Society of America
86, 371-378
| Abstract »
| PDF »
- Numerical modeling of fault-zone trapped waves: Acoustic case.
- B.-S. Huang, T.-l. Teng, and Y. T. Yeh (1995)
Bulletin of the Seismological Society of America
85, 1711-1717
| Abstract »
| PDF »
- Microearthquake S-wave observations from 0 to 1 km in the Varian well at Parkfield, California.
- D. Jongmans and P. E. Malin (1995)
Bulletin of the Seismological Society of America
85, 1805-1820
| Abstract »
| PDF »
- Fine Structure of the Landers Fault Zone: Segmentation and the Rupture Process.
- Y.-G. Li, Y.-G. Li, K. Aki, J. E. Vidale, W. H. K. Lee, and C. J. Marone (1994)
Science
265, 367-370
| Abstract »
| PDF »
|
|
