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 GIVEN, J. W. Articles by KANAMORI, H. Search for Related Content GeoRef GeoRef Citation

Teleseismic analysis of the 1980 Mammoth Lakes earthquake sequence

SEISMOLOGICAL LABORATORY DIVISION OF GEOLOGICAL AND PLANETARY SCIENCES CALIFORNIA INSTITUTE OF TECHNOLOGY, PASADENA, CALIFORNIA 91125

Abstract

The source mechanisms of the three largest events of the 1980 Mammoth Lakes earthquake sequence have been determined using surface waves recorded on the global digital seismograph network and the long-period body waves recorded on the WWSSN network. Although the fault-plane solutions from local data (Cramer and Toppozada, 1980; Ryall and Ryall, 1981) suggest nearly pure left-lateral strike-slip on north-south planes, the teleseismic waveforms require a mechanism with oblique slip. The first event (25 May 1980, 16^h 33^m 44^s) has a mechanism with a strike of N12°E, dip of 50°E, and a rake of –35°. The second event (27 May 19^h 44^m 51^s) has a mechanism with a strike of N15°E, dip of 50°, and a slip of –11°. The third event (27 May, 14^h 50^m 57^s) has a mechanism with a strike of N22°E, dip of 50°, and a rake of –28°. The first event is the largest and has a moment of 2.9 x 10²⁵ dyne-cm. The second and third events have moments of 1.3 and 1.1 x 10²⁵ dyne-cm, respectively. The body- and surface-wave moments for the first and third events agree closely while for the second event the body-wave moment (approximately 0.6 x 10²⁵ dyne-cm) is almost a factor of 3 smaller than the surface-wave moment. The principal axes of extension of all three events is in the approximate direction of N65°E which agrees with the structural trends apparent along the eastern front of the Sierra Nevada.

This article has been cited by other articles:

				D. S. Dreger, H. Tkal, and M. Johnston Dilational Processes Accompanying Earthquakes in the Long Valley Caldera Science, April 7, 2000; 288(5463): 122 - 125. [Abstract] [Full Text]

				C. Frohlich and C. Frohlich Earthquakes with Non--Double-Couple Mechanisms Science, May 6, 1994; 264(5160): 804 - 809. [Abstract] [PDF]

				D. I. DOSER and R. B. SMITH An assessment of source parameters of earthquakes in the cordillera of the western United States Bulletin of the Seismological Society of America, October 1, 1989; 79(5): 1383 - 1409. [Abstract] [PDF]

				J. S. BARKER and T. C. WALLACE A note on the teleseismic body waves from the 23 November 1984 round valley, California, earthquake Bulletin of the Seismological Society of America, June 1, 1986; 76(3): 883 - 888. [PDF]

				D. E. CHAVEZ and K. F. PRIESTLEY ML observations in the Great Basin and M0 versus ML relationships for the 1980 Mammoth Lakes, California, earthquake sequence Bulletin of the Seismological Society of America, December 1, 1985; 75(6): 1583 - 1598. [Abstract] [PDF]

				G. A. MCMECHAN, J. H. LUETGERT, and W. D. MOONEY Imaging of earthquake sources in Long Valley Caldera, California, 1983 Bulletin of the Seismological Society of America, August 1, 1985; 75(4): 1005 - 1020. [Abstract] [PDF]

				J. S. BARKER and C. A. LANGSTON A teleseismic body-wave analysis of the May 1980 Mammoth Lakes, California, earthquakes Bulletin of the Seismological Society of America, April 1, 1983; 73(2): 419 - 434. [Abstract] [PDF]

				S. HARTZELL Simulation of ground accelerations for the May 1980 Mammoth Lakes, California, earthquakes Bulletin of the Seismological Society of America, December 1, 1982; 72(6A): 2381 - 2387. [Abstract] [PDF]