The Preliminary Damage and Intensity Survey for the Landers, California, Earthquake of June 28,1992 Open-File Report 93-191 by Lindie R. Brewer1 This report has not been reviewed for conformity with U.S. Geological Survey editorial stan­ dards and stratigraphic nomenclature. At 4:57 a.m. local time (11:57 UTC) on June 28, 1992, a magnitude 7.3 earthquake awoke much of Southern California. The Big Bear Earthquake occurred on a previously unknown fault, which intersects the Camp Rock-Emerson fault. The early quake caused heavy damage to Old Woman Springs Road, a major route north of Yucca Valley to Landers. At 4:57 a.m. local time (11:57 UTC) on June 28, 1992, a magnitude 7.3 earthquake awoke much of Southern California. The faults involved are part of the Eastern California Shear Zone (ECSZ). Earth Sciences Library (Branner) Stacks Library has: 20 slides + 1 guide. Online. Earthquake damage, the Landers and Big Bear earthquakes, June 28, 1992 [slide]. Figure 8. Imprint Boulder, CO : National Oceanic and Atmospheric Administration, National Geophysical Data Center, [1993?] Description: The 1992 Landers earthquake occurred on June 28 with an epicenter near the town of Landers, California. What is Your Earthquake Risk? Santa Barbara . This quake, which occurred at 4:58 AM, triggered the Big Bear Earthquake (M=6.5), at 8:05 AM on the same day. The earthquake. Three hours later, another strong earthquake, magnitude 6.5, with its epicenter in the San Bernardino . 3.3 earthquake - 2.2 mi northeast of Westmorland, California, USA, on Sunday, 6 Dec 7:58 pm (GMT -8) - Minor magnitude 3.3 earthquake at 13 km depth This earthquake was felt near Bakersfield and Sacramento, and at least 312 aftershocks were recorded. The Landers earthquake surface rupture is plotted in red. That event caused at least 78 fatalities and 250 injuries in Oaxaca, and a further 16 deaths in Chiapas. The 1992 earthquake at Landers was a magnitude 7.6--the largest to have struck California in 40 years. Details . The Landers and Big Bear earthquakes had been. ally the average damage in other build- ings induced by the mainshock in the Figure 3: The M 6.2 aftershock of the M 7.5 1992 Landers, California, earthquake In Landers… Open in figure viewer PowerPoint. It was followed later that morning by a magnitude 6.7 quake at Big Bear. Earthquakes: 1987 Whittier Narrows, 1989 Loma Prieta, 1994 Northridge, 1992 Landers, 2014 South Napa. The shock had a moment magnitude of 7.3 and a maximum Mercalli intensity of IX (Violent). At one point the road broke, rising three feet on one side. Early on the morning of June 28, 1992, millions of people in southern California were awakened by the largest earthquake to occur in the western United States in the past 40 yrs. Open in figure viewer PowerPoint. The Hector Mine earthquake both strongly shook and permanently strained the Johnson Valley fault, adding damage discernible as a temporary reversal of the healing process. It was preceded by the 6.1 Joshua Tree quake on April 22, and followed 3 … Maximum intensity IX. The thin black rectangles illustrate the InSAR track footprints. The shock had a moment magnitude of 7.3 and a maximum Mercalli intensity of IX (Violent). [2] The quake was described at the time as the largest earthquake to have occurred in the contiguous United States in 40 years. Physical description 20 slides : col. ; 2 x 2 in. The Big Bear Earthquake a little over three hours later, and a lot less powerful than the Landers' event, was in a more populated area, and thus more damage was caused despite it only being a moderate-size earthquake. [3] Coulomb … One person was killed at Yucca Valley, two people died of heart attacks, more than 400 people were injured and substantial damage occurred in the Landers - Yucca Valley area. The earthquake did no damage at Yucca Mountain, which is 240 miles northeast of the epicenter. In the case of the Landers earthquake, about 95% of the aftershocks occurred within 5 km from the faults ruptured during the main shock [Liu et al., 2003]. The 1992 Landers Earthquake was a magnitude 7.3 earthquake that occurred on June 28, 1992 with an epicenter near the town of Landers, California. Mag. This map compiles all discovered earthquake fault lines in California until 2010. of life. It was located on the Camp Rock-Emerson Fault. Preliminary estimate of damage for this earthquake plus the following magnitude 6.5 event at 15:05 UTC is 92 million US dollars. (b) Far-field observations used in this study. Calculations are performed for both homogeneous and transversely isotropic half‐space models. At 4:58 a.m PDT (local time), faulting associated with the magnitude 7.3 earthquake broke through to earth's surface near the town of Landers, California. 1992 Landers earthquake. Description: The 1992 Landers earthquake occurred on June 28 with an epicenter near the town of Landers, California. The fault has since resumed the trend of strength recovery that it showed after the Landers earthquake. The coseismic stress perturbations due to the Landers earthquake are computed using a slip model derived from inversions of the InSAR and GPS data. Damage: Both earthquakes caused buildings to collapse, ignited fires, buckled roads, damaged water tanks and crippled water delivery systems, produced numerous rock slides in the San Bernardino Mountains, and derailed standing railroad boxcars near Barstow. Earthquakes of 1992 in Landers and 1999 in Hector Mine broke faults at the surface, but didn’t do it at the main plate boundary, Biasi said. Some 36 known faults run along and around Yucca … Figure 9. The largest of these was the June 29, 1992, quake at Little Skull Mountain, likely triggered by the big (7.4) Landers earthquake in California. Earthquake damage, the Landers and Big Bear earthquakes, June 28, 1992 by National Geophysical Data Center, unknown edition, caused extensive damage throughout the area and hundreds of mostly minor injuries but minimal loss. The Northridge Earthquake vividly showed that it only takes a moderate-sized earthquake in an urban area to cause major damage. The hypocenter of the September 8th, 2017, M 8.2 earthquake offshore Chiapas is located 240 km southeast of today's earthquake. The earthquake damaged a fire station at Pacheco Pass, and a nearby lookout station was vacated because of damage, as well.

To the west in the if the issue persists. Loma Prieta earthquake which caused major damage to the San Francisco Bay Area measured 7.1 in magnitude.) Damage to the shallow Landers fault from the nearby Hector Mine earthquake John E. Vidale, & Yong-Gang Li Published 2003, SCEC Contribution #1062 Crustal faults have long been identified as sites where localized sliding motion occurs during earthquakes, which allows for the relative motion between adjacent crustal blocks. So, even though an earthquake may be quite … The Landers Earthquake (M=7.4) was the strongest earthquake to strike California since 1952. The entire wiki with photo and video galleries for each article It caused considerable structural damage to the surrounding area, and one death - a three-year-old child. The area was the epicenter of the June 28, 1992 Landers earthquake, a magnitude 7.4 strike-slip earthquake. Only for the purpose of the application of any Deductible, any loss, destruction or damage to the Contract Works or other insured property arising during any one period of seventy two consecutive hours caused by water, flood, cyclone, storms, tempest, earthquake or bush fire shall be deemed to be a single event and therefore to constitute one occurrence. We have been monitoring the healing of damage on the shallow Johnson Valley fault after its rupture in the 1992 magnitude-7.3 Landers earthquake, and here we report that this healing was interrupted in 1999 by the magnitude-7.1 Hector Mine earthquake rupture, which occurred 20-30km away. Available online At the library. Surface ruptures associated with the 1992 Landers Earthquake, in San Bernardino County, extended for fifty miles with displacements ranging from one inch to twenty feet. Landers & Big Bear . 49 likes. + guide (6 p. : map ; 28 cm.) The 1992 Landers earthquake occurred on June 28 with an epicenter near the town of Landers, California. National Earthquake Information Center U.S. Geological Survey Denver, Colorado. The Morongo Basin Historical Society is located in Landers… Mountains in the vicinity of Big Bear, shook the region. Coseismic Coulomb stress changes induced by the Landers main shock computed at 10 km on right‐lateral receiver faults striking N340°E.

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