Two total field proton magnetometers were in operation at distances of 17.1 and 24.2 km from the earthquake and have recorded synchronously sampled local magnetic fields every … The slip that occurs in such an earthquake would be expected to induce large changes in the static stress on neighbouring faults; these changes in stress should in turn affect the likelihood of future earthquakes. Frequency-magnitude relationships for two 10-year periods before and two 5-year periods around the Landers event are compared. An important set of observations of SM effects were made during the 28 July 1992 Landers earthquake (Johnston et al., 1994). 1992 Nov 20;258(5086):1328-32. doi: 10.1126/science.258.5086.1328. Only events with magnitude, M greater than or equal to 4.0 are included; aftershocks are removed. This earthquake had a moment of 1.1 × 10 27 dyne cm and a magnitude of 7.3. Introduction. The slip that occurs in such an earthquake would be expected to induce large changes in the static stress on neighbouring faults; these changes in stress should in turn affect the likelihood of future earthquakes. We systematically considered circular regions and equal-area annuli centered on the epicenter of the Landers earthquake. The 1992 Landers, California, earthquake (magnitude 7.3) was modeled as the propagation of a spontaneous rupture controlled by a realistic prestress distribution with the use of a three-dimensional finite-difference method. Landers is a small town in the Mojave Desert about 43 km north of Palm Springs and 80 km east of San Bernardino. THE magnitude 7.5 Landers earthquake of 28 June 1992 was the largest earthquake to strike California in 40 years. The magnitude 7.5 M s earthquake that occurred near Landers, California on June 28, 1992 is the largest event to occur in California since 1952 and the largest event with an extensive set of strong motion recordings. The triggered earthquakes, which occurred at distances up to 1250 kilometers (17 source dimensions) from the Landers mainshock, were confined to areas of persistent seismicity and strike-slip to normal faulting. Major magnitude 7.3 earthquake - 5.9 mi north of Yucca Valley, San Bernardino Comitatus County, California, USA, on Sunday, 28 June 1992 at 11:57 (GMT) USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards Jump to Navigation The 1992 Magnitude 7.3 Landers Earthquake 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. 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