In October of 1979, the four-unit power plant at El Centro, California, experienced an earthquake of Magnitude 6.6 on the Richter scale. Spectral ratios of array averages were developed as one way of estimating the spatial averaging of ground motion. Find articles, news, videos, pictures, links and facts about El Centro. The 1940 El Centro earthquake (or 1940 Imperial Valley earthquake) occurred at 21:35 Pacific Standard Time on May 18 (05:35 UTC on May 19) in the Imperial Valley in southeastern Southern California near the international border of the United States and Mexico.It had a moment magnitude of 6.9 and a maximum perceived intensity of X (Intense) on the Mercalli intensity scale. The Jrperial Valley 1rrigation Dist,r'.ct permitted the array to be placed in near El Centro … E 1 Centro di ferential ari ay Such an array, un,";ed jointly by the Federal Hip':»ay ACministration and the U.S. Geolngical Sv1vey, »'as I ecently installed at El Centro, Calif. in time to record the carthqua) e of October 15, 1979. Differential spectra for the 1979 El Centro and the 1984 Morgan Hill, California earthquakes. 11.2 x 1025 dyne-em (Burdick and Mellman, 1976), and the 1971 San Fernando earthquake, Mo = 8.6 X 1025 dyne-em (Langston, 1978). October 1, 1915 Earthquake felt by many at 7:26 a.m. centered near Redwood City on … An event on the Imperial Fault Zone in the Imperial Valley. In 1979, a magnitude-6.5 earthquake sent violent shaking into El Centro, injuring 91 and causing so much damage to the concrete Imperial County Services Building that it had to be demolished. The El Centro array is numbered 1 through 13. The origin time of the 1979 Imperial Valley earthquake is 23hr16min54.5sec with an epicenter of 32.63°N, 115.33°W, or approximately 5 km south of the international border (Brady et al., 1980). BUILDING VIBRATION DURING THE OCTOBER 1979 EARTHQUAKE However, it is a very Abstract. El Centro earthquake latest breaking news and updates, information, look at maps, watch videos and view photos and more. Centered at the border near Mexicali in northeast Baja California (Mexico); and El Centro, in Imperial County, Southern California (U.S.). The earthquake occurred 21 miles from Imperial, 25 miles from El Centro, 33 miles from Calexico and 43 miles from Coachella. * The information on this page is based on the global volcano database, the U.S. earthquake database of 1638-1985, and the U.S. Tornado and Weather Extremes database of 1950-2010. Services>Building in El Centro, California caused by the earthquake on October 15, 1979..... 46 20 Damage to a wall of the McMahn's Furniture Store in Calexico, Calif. 47 21 Damage to the cornice of the Deluxe Cleaners building in El Centro, For the US Nuclear Regulatory Commission (NRC), Lawrence Livermore National Laboratory (LLNL) performed a dynamic seismic analysis of Unit 4 of the El Centro Steam Plant in El Centro, Calif. Analysis of the El Centro differential array for the 1979 Imperial Valley earthquake Bulletin of the Seismological Society of America Peak horizontal acceleration and velocity from strong-motion records including records from the 1979 imperial valley, California, earthquake English: The 1979 Imperial Valley earthquake. 958 El Centro Sta 8 32.81 N Alluvium , more Inst shltr Ground level 95 E Cruickshank Rd 115.53 w than 300m 117 * El Centro Sta 9 32.79 N Alluvium, more 2-story bldg Ground level 302 Commercial Av 11 5.55 w than 300m 412 El Centro Sta 10 32.78 N Alluvium , more 1-story bldg Ground 1 evel Built in 1968, Unit 4 is an oil- or gas-fired, steam-driven turbine-generator that was designed to resist a static lateral force equivalent to 20% of the dead and live load. This will create an … Get this from a library! EL CENTRO, Calif. — A series of five small to moderate earthquakes shook the Imperial County town of El Centro Monday evening. An earthquake with an abrupt rocking motion at 9:51 a.m. June 22, 1915 Earthquake in the Imperial Valley wrecked the towns of Calexico and El Centro. Jones said two of the bigger quakes in historic time closest to Monday’s swarm, a magnitude 6.9 earthquake in 1940 and a magnitude 6.4 quake in Imperial Valley in 1979… The Imperial fault was the source of the 1940 El Centro earthquake and the 1979 Imperial Valley earthquake. EL CENTRO, Calif. (UPI) — Aftershocks rumbled across the Imperial Valley Tuesday as Imperial County officials estimated more than $10 million in losses from Monday's earthquake, the strongest to hit the U.S. mainland in more than eight years. Spatial coherence of digitally recorded acceleration time histories across five elements of the El Centro Differential Array recorded during the October 15, 1979 Imperial Valley, California, earthquake is studied. No historical earthquake events found in or near El Centro, CA. Earthquake Information for El Centro, California. The USGS database shows that there is a 99.30% chance of a major earthquake within 50km of El Centro, CA within the next 50 years. The item Differential spectra for the 1979 El Centro and the 1984 Morgan Hill, California earthquakes, by G.N. Six people killed in Mexicali, Mexico. The 1940 El Centro earthquake (or 1940 Imperial Valley earthquake) occurred at 21:35 Pacific Standard Time on May 18 (05:35 UTC on May 19) in the Imperial Valley in southeastern Southern California near the international border of the United States and Mexico.It had a moment magnitude of 6.9 and a maximum perceived intensity of X (Extreme) on the Mercalli intensity scale. TYPE OF FAULTING: right-lateral strike-slip TIME: October 15, 1979 / 4:54 pm PDT LOCATION: 32° 37' N, 115° 19' W about 29 km (18 miles) southeast of El Centro It affected Imperial Valley in Southern California and Mexicali Valley in northern Baja California. A magnitude 4.0 earthquake was reported Monday at 10:04 a.m. 12 miles from Brawley, Calif., according to the U.S. Geological Survey. The 1979 Imperial Valley earthquake occurred at 16:16 Pacific Daylight Time (23:16 UTC) on October 15 just south of the Mexico–United States border. 411 S. Koji& 4.-El Centro Imperial County flit*tl10 h 1X l 51 made using the model to ensure that equilibrium was satisfied in both directions. Dataset Citation . Cite as: NOAA National Geophysical Data Center (2012): Natural Hazard Images Database (Event: October 1979 El Centro, USA Images). xyz México was hit by 168 earthquakes with a magnitude of 4 and more in 1979. Epicenters and Locations of the Biggest Quakes Near El Centro, California, United States - Page 8. Earthquake Information Fault Name Index Imperial Fault Zone. El Centro, CA has a very high earthquake risk, with a total of 10,582 earthquakes since 1931. [G N Bycroft; P N Mork; Geological Survey (U.S.)] El Centro, CA - Array Sta 9; Imperial Valley Irrigation District - 302 Commercial: Hypocentral dist: 12.2 km El Centro Unit 2 was originally commissioned in 1952 as a natural gas and residual-oil-fired steam unit with a net rating of 32 MW. The biggest earthquake in México for 1979 had a magnitude of 7,5 (14/03/1979) Terremotos. Mork represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in Indiana State Library. The magnitude 6.9 earthquake caused $30 million property damage and injured 91 people. Earthquake Information Chronological Earthquake Index Imperial Valley Earthquake. No historical tornado events that had recorded magnitudes of 2 or above found in or near El Centro, CA. NOAA National Centers for Environmental Information. The first earthquake hit at 6:07 p.m., less than a mile east of El Centro and had a magnitude of 2.8 with a depth of 10.3 miles, according to initial information from the U.S Geological Survey. Earthquake losses exceed $10 million. ... 5.0 magnitude earthquake. A sand boil near El Centro provides graphic evidence of liquefaction. TYPE OF FAULT: right-lateral strike-slip LENGTH: 69 km NEAREST COMMUNITIES: Brawley, Imperial, El Centro, Calexico, Mexicali LAST SURFACE RUPTURE: October 15, 1979, Mw6.4; May 18, 1940, Mw6.9; several other small ruptures and instances of triggered slip SLIP RATE: between 15 and 20 mm/yr Bycroft and P.N. Twelve three-component strong-motion displacement records are modeled for the 1979 Imperial Valley earthquake to recover the distribution of slip on the Imperial fault p Join the discussion on Facebook or Twitter and find more about temblor, tremor or quakes that have occurred in El Centro quakes. North-south-trending crack in the sixth floor just east of the first interior row of columns (from the east face) of the Imperial County Services Building in El Centro. Such boils were found especially along the southern extent of the Imperial Fault. Abstract. Earthquake Data Location and/or name: El Centro, California (Imperial Valley earthquake) Date and time: 15 October 1979, 4:16:54.5 p.m. PDT Epicenter: 32.63°N, 115.33°W Magnitude: 6.6 MMI at site: Not established Literature: The Imperial Valley, California, Earthquake of October 15, 1979, USGS Professional Paper 1254, 2 volumes, 451 pp. Brawley faults and the locations of strong-motion instruments. A ground motion record was taken at the plant site, allowing accurate estimates of the seismic motion experienced by the plant structures and the equipment contained inside. Brawley Seismic Zone-Wikipedia. Earthquake of October 15, 1979, Imperial Valley, California. 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