Seismicity remotely triggered by the magnitude 7. 3 Landers, California, earthquake

Journal Article · Fri Jun 11 00:00:00 EDT 1993 · Science (Washington, D.C.); (United States)

DOI:https://doi.org/10.1126/science.260.5114.1617· OSTI ID:6306796

Hill, D P; Reasenberg, P A; Michael, A; Ellsworth, W L; Johnston, M J.S.; Simpson, R W; Walter, S ^[1]; Arabaz, W J; Nava, S; Pechmann, J C; Smith, R B ^[2]; Beroza, G ^[3]; Brumbaugh, D ^[4]; Brune, J N; dePolo, D ^[5]; Castro, R; Munguia, L; Vidal, A; Wong, V ^[6]; Davis, S ^[7] ; Gomberg, J; Harmsen, S ^[8]; House, L ^[9]; Jackson, S M ^[10]; Jones, L ^[11]; Keller, R ^[12]; Malone, S ^[13]; Sanford, A ^[14]

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1. Geological Survey, Menlo Park, CA (United States)
2. Univ. of Utah, Salt Lake City (United States)
3. Stanford Univ., CA (United States)
4. Northern Arizona Univ., Flagstaff (United States)
5. Univ. of Nevada, Reno (United States)
6. CICESE, Ensenada (Mexico)
7. Univ. of Texas, Austin (United States)
8. Geological Survey, Golden, CO (United States)
9. Los Alamos National Labs., NM (United States)
10. Idaho National Engineering Lab., Idaho Falls (United States)
11. Geological Survey, Pasadena, CA (United States)
12. Univ. of Texas, El Paso (United States)
13. Univ. of Washington, Seattle (United States)
14. New Mexico Inst. of Mini

The magnitude 7.3 Landers earthquake of 28 June 1992 triggered a remarkably sudden and widespread increase in earthquake activity across much of the western United States. The triggered earthquakes, which occurred at distances up to 1,250 kilometers (17 source dimensions) from the Landers mainshock, were confined to areas of persistent seismicity and strike-slip to normal faulting. Many of the triggered areas also are sites of geothermal and recent volcanic activity. Static stress changes calculated for elastic models of the earthquake appear to be too small to have caused the triggering. The most promising explanations involve nonlinear interactions between large dynamic strains accompanying seismic waves from the mainshock and crustal fluids (perhaps including crustal magma). 26 refs., 7 figs., 1 tab.

• OSTI ID: 6306796
• Journal Information: Science (Washington, D.C.); (United States), Vol. 260:5114; ISSN 0036-8075
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
EARTH CRUST
DYNAMICS
EARTHQUAKES
INDUCTION
SEISMIC WAVES
STRAINS
GEOTHERMAL FIELDS
MAGMA
NONLINEAR PROBLEMS
USA
VOLCANIC REGIONS
DEVELOPED COUNTRIES
MECHANICS
NORTH AMERICA
SEISMIC EVENTS
580000* - Geosciences