HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) References Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Bodin, P. Articles by Gomberg, J. Search for Related Content GeoRef GeoRef Citation

Triggered seismicity and deformation between the Landers, California, and Little Skull Mountain, Nevada, earthquakes

Center for Earthquake Research and Information Memphis State University, Memphis, TN 38112
U.S. Geological Survey Denver Federal Center, Denver, Colorado 80225

Abstract

This article presents evidence for the channeling of strain energy released by the M_s = 7.4 Landers, California, earthquake within the eastern California shear zone (ECSZ). We document an increase in seismicity levels during the 22-hr period starting with the Landers earthquake and culminating 22 hr later with the M_s = 5.4 Little Skull Mountain (LSM), Nevada, earthquake. We evaluate the completeness of regional seismicity catalogs during this period and find that the continuity of post-Landers strain release within the ECSZ is even more pronounced than is evident from the catalog data. We hypothesize that regional-scale connectivity of faults within the ECSZ and LSM region is a critical ingredient in the unprecedented scale and distribution of remotely triggered earthquakes and geodetically manifest strain changes that followed the Landers earthquake. The viability of static strain changes as triggering agents is tested using numerical models. Modeling results illustrate that regional-scale fault connectivity can increase the static strain changes by approximately an order of magnitude at distances of at least 280 km, the distance between the Landers and LSM epicenters. This is possible for models that include both a network of connected faults that slip "sympathetically" and realistic levels of tectonic prestrain. Alternatively, if dynamic strains are a more significant triggering agent than static strains, ECSZ structure may still be important in determining the distribution of triggered seismic and aseismic deformation.

Footnotes

¹ Present address: CERI, Memphis State University, Memphis, Tennessee 38112.

This article has been cited by other articles:

				S. Husen, S. Wiemer, and R. B. Smith Remotely Triggered Seismicity in the Yellowstone National Park Region by the 2002 Mw 7.9 Denali Fault Earthquake, Alaska Bulletin of the Seismological Society of America, December 1, 2004; 94(6B): S317 - S331. [Abstract] [Full Text] [PDF]

				K. L. Pankow, W. J. Arabasz, J. C. Pechmann, and S. J. Nava Triggered Seismicity in Utah from the 3 November 2002 Denali Fault Earthquake Bulletin of the Seismological Society of America, December 1, 2004; 94(6B): S332 - S347. [Abstract] [Full Text] [PDF]

				Aftershocks and Triggered Events of the Great 1906 California Earthquake Bulletin of the Seismological Society of America, October 1, 2003; 93(5): 2160 - 2186.

				Intraplate Triggered Earthquakes: Observations and Interpretation Bulletin of the Seismological Society of America, October 1, 2003; 93(5): 2212 - 2221.

				Magnitude Estimates of Two Large Aftershocks of the 16 December 1811 New Madrid Earthquake Bulletin of the Seismological Society of America, December 1, 2002; 92(8): 3259 - 3268.

				Source Properties of Earthquakes near the Salton Sea Triggered by the 16 October 1999 M 7.1 Hector Mine, California, Earthquake Bulletin of the Seismological Society of America, May 1, 2002; 92(4): 1281 - 1289.

				The Athens, Greece, Earthquake (Ms 5.9) of 7 September 1999: An Event Triggered by the Izmit, Turkey, 17 August 1999 Earthquake? Bulletin of the Seismological Society of America, February 1, 2002; 92(1): 312 - 321.

				Triggered Earthquakes and the 1811-1812 New Madrid, Central United States, Earthquake Sequence Bulletin of the Seismological Society of America, December 1, 2001; 91(6): 1574 - 1581.

				The 1992 Little Skull Mountain Earthquake Sequence, Southern Nevada Test Site Bulletin of the Seismological Society of America, December 1, 2001; 91(6): 1595 - 1606.

				M. Wyss and S. Wiemer Change in the Probability for Earthquakes in Southern California Due to the Landers Magnitude 7.3 Earthquake Science, November 17, 2000; 290(5495): 1334 - 1338. [Abstract] [Full Text]

				J. Bhattacharyya, S. Gross, J. Lees, and M. Hastings Recent earthquake sequences at Coso: Evidence for conjugate faulting and stress loading near a geothermal field Bulletin of the Seismological Society of America, June 1, 1999; 89(3): 785 - 795. [Abstract] [PDF]

				K.-L. Wen, I. A. Beresnev, and S.-N. Cheng Moderate-magnitude seismicity remotely triggered in the Taiwan region by large earthquakes around the Philippine Sea plate Bulletin of the Seismological Society of America, June 1, 1996; 86(3): 843 - 847. [Abstract] [PDF]

				C. Lomnitz Search of a worldwide catalog for earthquakes triggered at intermediate distances Bulletin of the Seismological Society of America, April 1, 1996; 86(2): 293 - 298. [Abstract] [PDF]

				M. Meremonte, J. Gomberg, and E. Cranswick Constraints on the 29 June 1992 Little Skull Mountain, Nevada, earthquake sequence provided by robust hypocenter estimates Bulletin of the Seismological Society of America, August 1, 1995; 85(4): 1039 - 1049. [Abstract] [PDF]

				M. J. S. Johnston, D. P. Hill, A. T. Linde, J. Langbein, and R. Bilham Transient deformation during triggered seismicity from the 28 June 1992 Mw = 7.3 Landers earthquake at Long Valley volcanic caldera, California Bulletin of the Seismological Society of America, June 1, 1995; 85(3): 787 - 795. [Abstract] [PDF]

				C. Lomnitz On the distribution of distances between random points on a sphere Bulletin of the Seismological Society of America, June 1, 1995; 85(3): 951 - 953. [Abstract] [PDF]

				J. Gomberg and P. Bodin Triggering of the Ms = 5.4 Little Skull Mountain, Nevada, earthquake with dynamic strains Bulletin of the Seismological Society of America, June 1, 1994; 84(3): 844 - 853. [Abstract] [PDF]

				J. G. Anderson, J. N. Brune, J. N. Louie, Y. Zeng, M. Savage, G. Yu, Q. Chen, and D. dePolo Seismicity in the western Great Basin apparently triggered by the Landers, California, earthquake, 28 June 1992 Bulletin of the Seismological Society of America, June 1, 1994; 84(3): 863 - 891. [Abstract] [PDF]