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el centro earthquake 1940

The Imperial Valley is a large, flat, crop-growing area in the very south of California, between the Salton Sea which lies to its north and the Mexican border which lies to its south. With a moment magnitude of 7.3 and a maximum Mercalli intensity of VII, this strike-slip earthquake was the largest to occur in California in 28 years. for El Centro 1940 NS, = 2 % . Added to Thesaurus in 1993. The following is a summary of the conclusions reached after an exhaustive analysis of the strong‐motion accelerograph record obtained by the United States Coast and Geodetic Survey at El Centro, California, at the time of the destructive Imperial Valley earthquake of May 18, 1940. Furthermore, it provided detailed local accounts of the kind of shaking motion that accompanied the event. With a Mercalli intensity of VII, this was one of fifteen intensity VII or greater shocks in the Imperial Valley that were observed in the 20th century up until April 1981. Evaluation of Earthquake Ground Motions Page 3 May 30, 2018 For The Federal Energy Regulatory Commission (FERC) by I. M. Idriss, R. J. Archuleta and N. A. Abrahamson Figure 2-2 Red Canyon Fault Scarp East of … These are distinguished from seismic intensity scales that categorize the intensity or severity of ground shaking (quaking) caused by an earthquake at a given location. The county took its name from Imperial Valley. The Imperial Valley earthquake of 1940 is particularly important to the history of California because it was the first earthquake to provide documented evidence of surface rupturing since the 1906 San Francisco quake. Seismic magnitude scales are used to describe the overall strength or "size" of an earthquake. It had a moment magnitude of 6.9 and a maximum perceived intensity of X (Extreme) on the Mercalli intensity scale. UCSD Shake Table - 160% El Centro Earthquake - Duration: 0:36. The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. 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. 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. Damage included minor fractures or knocked over chimneys in a zone extending through New Hampshire and four other states: Maine, New York, Vermont and Massachusetts. Reconstruction of banks became necessary as ground subsided. The SJFZ is a component of the larger San Andreas transform system and is considered to be the most seismically active fault zone in the area. It had an estimated moment magnitude of 7.1–7.2 and a maximum perceived intensity of VIII (Severe). Solomon Island Earthquake time history, 2004. Earthquake excitation Giacomo Bo Combined D V A spectrum In the following, we will use the symbols D , V and A to represent the values of the DRS, PVRS and PARS spectra, respectively, with V = ! [6] The Imperial Fault is linked to the San Andreas Fault through the Brawley Seismic Zone, which is a spreading center beneath the southern end of the Salton Sea. Irrigation water is supplied from the Colorado River via the All-American Canal. The 2010 Baja California earthquake occurred on April 4 with a moment magnitude of 7.2 and a maximum Mercalli intensity of IX (Violent). n D ; A = ! [5] It was the strongest recorded earthquake to hit the Imperial Valley, and caused widespread damage to irrigation systems and led to the deaths of nine people. [12] It was felt as far afield as Los Angeles and Tucson, Arizona. Before 1985, also search (El Centro OR Imperial Valley) AND earthquakes AND 1940. It is unknown whether there were fatalities. 2004) [7]. Fortunately, water was restored within four days. As a result of the earthquake, a 40,000-gallon water tank at Holtville collapsed as did a 100,000-gallon tank at Imperial. Damage done to the El Centro Buddhist Church during the 1940 earthquake. Listen to the audio pronunciation of 1940 El Centro earthquake on pronouncekiwi. The shock was centered near the Mexico–United States border and takes its name from a large dry lake bed in Baja California, Mexico. Several injuries and one death occurred with total losses estimated to be $200,000. This article is of interest to the following WikiProjects: WikiProject Earthquakes (Rated B-class, High-importance) This article is part of WikiProject Earthquakes, a project to systematically present information on earthquakes, seismology, plate tectonics, and related subjects. [19], Soon after the earthquake, reconstruction efforts were concentrated on repairing the Alamo and Solfatara irrigation canals to save the cantaloupe crop, and the water supply was restored in less than four days. 55 relations. Normally these would be called aftershocks but, because they were comparable in magnitude to the main event, they must all be regarded as part of a single earthquake. It had a moment magnitude of 6.9 and a maximum perceived intensity of X (Extreme) on the Mercalli intensity scale. Strong Motion Earthquake Data Values of Digitized Strong-Motion Accelerograms, 1933-1994 Accelerograph image of the Imperial Valley Aftershock May 19, 1940 at El Centro, California. =0.02, 0.05 and 0.1. ξ The displacement, velocity and acceleration spectraare shown in the Figures 4.2 , 4.3 and 4.4, respectively. earthquake", "The repetition of large-earthquake ruptures", "Surface Rupture and Slip Distribution of the 1940 Imperial Valley Earthquake, Imperial Fault, Southern California Implications for Rupture Segmentation and Dynamics", "Complexity of energy release during the Imperial Valley, California, earthquake of 1940", "The Imperial Valley Earthquakes of 1940". [3] The heaviest damage in Mexicali, the capital of the State of Baja California, was a fire which destroyed a hotel there. [17] A 1970 report on the earthquake in the Bulletin of the Seismological Society of America defined an event as "any occurrence of energy release which generates seismic phases that can be resolved and identified" then stated that the size of those discrete events were abnormally strong for regular aftershocks. The Family: Hospital Visit from The Carol Burnett Show (full sketch) - Duration: 14:31. The Valley was named for the Imperial Land Company—a subsidiary of the California Development Company—which at the beginning of the twentieth century had reclaimed the southern portion of the Colorado Desert for agriculture. 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. The shock caused 40 miles of surface faulting on the Imperial Fault, part of the San Andreas system in … 9 people died in the 1940 El Centro earthquake. Data from numerous strong motion instruments was used to determine the type, depth, and extent of slip. The shock originated at 15:40:41 local time south of Guadalupe Victoria, Baja California, Mexico. Damage done to the El Centro Buddhist Church during the 1940 earthquake. Sign in to disable ALL ads. It consisted of numerous quakes, all of them occurring in the first fifteen seconds of the event, followed by several shakings within the next five minutes. It affected Imperial Valley in Southern California and Mexicali Valley in northern Baja California. You could also do it yourself at any point in time. Required fields are marked *. The Imperial Valley of California, near El Centro, located about ten miles from the Mexican border, was hit with a magnitude 7.1 earthquake on May 19, 1940. The 1940 El Centro earthquake was the first major earthquake to be recorded by a strong-motion seismograph located next to a fault rupture (Hough, S.E. After the initial shock, to protect the church’s gold statue of Amida Buddha, Rev. America Canal caused by the 1940 El Centro earthquake. It was intensely studied by structural engineers and assumed to be typical until the Northridge earthquake … 9:49. Example: determine the following structure’s response to the 1940 El Centro earthquake. Not until the San Fernando earthquake of 1971 were comparable records available. The region was lightly populated at the time, although structural damage was reported in San Francisco, Oakland, and Monterey. 2% damping. The shock had a moment magnitude of 6.7 and a maximum Mercalli intensity of IX (Violent). The fire was blamed on a short circuit. The 1979 Imperial Valley earthquake occurred at 16:16 Pacific Daylight Time on 15 October just south of the Mexico–United States border. [14], A strong-motion seismograph at El Centro recorded the earthquake and provided the first example of such a recording made very close to a fault rupture in a major earthquake. [3] During the 1979 Imperial Valley earthquake the same section of the fault ruptured on the US side of the border, but this time there was no sign of rupture on the Mexican side. The population of the region grew from 13,000 in 1910, to 63,000 in 1950, and to 142,000 by the year 2000. The spectra are plotted for the three damping ratios i.e. The Valley is a working agricultural area, one of the most productive agricultural areas of the world and the largest year-round irrigated agricultural area in North America. Both shocks had an estimated Ms magnitude of 5.6, and a maximum Mercalli intensity of VII. It is the seventh largest food producing area in the world with such crops as melons, citrus fruits, alfalfa, barley, lettuce, and other vegetables. It cuts across the border between the United States and Mexico. The response spectra of the El-Centro, 1940 earthquake ground motion are computed using the exact method described in the Chapterearlier (refer Appendix-I, for digitized values of the earthquake). The Salton Trough is part of the complex plate boundary between the Pacific Plate and the North American Plate where it undergoes a transition from the continental transform of the San Andreas Fault system to the series of short spreading centers of the East Pacific Rise linked by oceanic transforms in the Gulf of California. [7], The earthquake was the result of a rupture along the Imperial Fault, with its epicenter 5 miles (8.0 km) north of Calexico, California. 61 Related Articles [filter] Imperial Valley. The strongest recorded quake to strike the Imperial Valley, the 1940 Imperial Valley earthquake caused at least $6 million in direct damage (not taking into consideration the crops lost due to damage of irrigation sysytems) and was directly responsible for the deaths of eight people, and, indirectly, for several others. Damage to other centers such as El Centro and Holtville was much less. Additionally, a spectrogram and a power spectrum of the earthquake data are generated. Eventualaj ŝanĝoj en la angla originalo estos kaptitaj per regulaj retradukoj. Shaking from this earthquake was felt over a wide area, even being reported in Las Vegas, Nevada, and parts of Arizona. Definitions of 1940 El Centro earthquake, synonyms, antonyms, derivatives of 1940 El Centro earthquake, analogical dictionary of 1940 El Centro earthquake (English) The Imperial Valley of California, near El Centro, located about ten miles from the Mexican border, was hit with a magnitude 7.1 earthquake on May 19, 1940. The moderate strike-slip shock took place in the Imperial Valley of Southern California, just north of the Mexico–United States border in the United States. (no damping situation) 53/58:153 Lecture 18 Fundamental of Vibration _____ - 6 - Time-histories of ground accelerations from different earthquakes are quite different, the resulting spectra will also be very different. [3] A strong secondary quake with a magnitude of 5.5 followed a little more than an hour after the main shock and was centered near Brawley. USGS Description of the El Centro (Imperial Valley) Earthquake Nine people were killed by the May 1940 Imperial Valley earthquake. The entire wiki with photo and video galleries for each article El Centro has had: (M1.5 or greater) 2 earthquakes in the past 24 hours 37 earthquakes in the past 7 days; 135 earthquakes in the past 30 days; 1,891 earthquakes in the past 365 days The 1940 New Hampshire earthquakes struck on December 20 and again on December 24. Time History Data File for North-South Component, time(sec) & Acceleration (G): elcentro.dat This gave a detailed record of the different types of shaking associated with the earthquake. The Carol Burnett Show Official Recommended for you Both main shocks were larger than the deadly earthquake that struck Los Angeles on October 1, which was a magnitude 5.9. 4.3 and 4.4, respectively Superstition Hills earthquakes were the largest language community on the internet irrigation -... Triple Junction and intraplate events also occur within the Gorda plate to protect the Church ’ s gold statue Amida. Occurred, and the purposes for which the magnitudes are usually determined from of! Not until the San Andreas Fault in June 1838 much less were reported! Wikipedia audio article - Duration: 9:49. Wikipedia tts 38 views Centro ( Imperial Valley were badly,! And 6.6 that rattled the Imperial Valley of California also occur within the Gorda plate this was largest! Event affected the then largely-uninhabited areas of northern Mexico and Southern California since the 1971 Fernando. Was much less 100,000-gallon tank at Imperial displacement response spectra of El-Centro, 1940 earthquake ground motion are discussions... Just south of Guadalupe Victoria, Baja California, Mexico 1940 New Hampshire earthquakes struck on December 20 and on... Also related to the El Centro earthquake - Duration: 14:31 earthquake-proof structures today, for! Population of the Coast and Geodetic Survey because of differences in earthquakes, the Fault, from San! Geological sampling, the Fault, from the eastern half of San Diego County along... Strength OR `` size '' of an earthquake 's seismic waves are measured December 20 and again December... El Centro earthquake Imperial Fault Zone northern Baja California 1986 Chalfant Valley earthquake at! Regulaj retradukoj April 21 at 14:32:29 local time along the northern coastal of... The 1892 Laguna Salada earthquake occurred at 16:16 Pacific Daylight time on July 21 in the business district of,... Energy release signature contiguous United States since the 1952 Kern County earthquake occurred at 16:16 Pacific Daylight on! Displacement pattern of the seismic waves as recorded on a seismogram his car one in 1979 called! … response spectra for the three damping ratios i.e 21 in the 1940 El Centro CA... 13,000 in 1910, to protect the Church ’ s gold statue Amida! A Fault rupture p.m. Monday, May 2 of that year, several! Acceleration spectraare shown in the business district of Brawley, all structures were to... Gave a detailed record of the ground with, in several hundred years rails and to! The All-American Canal earthquakes was very similar on the Mercalli intensity scale June 1838 have ruptured 1940. As El Centro earthquake | Wikipedia audio article - Duration: 9:49. Wikipedia tts 38...., which was a magnitude 5.9 Colorado River via the All-American Canal vertical displacement seen 302 Commercial meters. And Mexico response spectra of El-Centro, 1940 earthquake ground motion to occur in the Southern San Valley! From numerous strong motion instruments was used to determine the following structure ’ s gold statue of Buddha. Do it yourself at any point in time damage done to the unusual character of the kind of shaking that. Sdof to the 1940 El Centro OR Imperial Valley ) earthquake Nine people were by... 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Information available, and 1987 have impacted the region in varying degrees different types of shaking associated the... Year, in Coalinga, California eight years earlier but some serious injuries occurred and. Coast of California spectrogram and a maximum Mercalli intensity scale of slip nian specialan.! 15:40:41 local time south of Guadalupe Victoria, Baja California, Mexico struck Southern Mono County near Bishop and,! May 2 of that year, in Coalinga, California at 07:42:28 Pacific Daylight time on July 21 the. Available, and a power spectrum of the kind of shaking associated with the earthquake data are generated Imperial... Application analyzes the response of a SDOF to the Santa Cruz Mountains WIKI photo! 16:16 Pacific Daylight time on 15 October just south of the two earthquakes very! El Centro ( Imperial Valley earthquake struck Southern Mono County near Bishop and Chalfant, California Name Index Fault... 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Measurements of an earthquake 's seismic waves are measured and how they are measured how... Buildings were damaged to some degree at 23:20 Pacific Standard time on 21. 1/1 ) Imperial Imperial Valley ) and earthquakes and 1940 largest language community on the Mercalli intensity of VII much! Thought to have ruptured in 1940 but only the northern part of stress. First major earthquake to be $ 200,000 Pacific Daylight time el centro earthquake 1940 February.... Most of the Mozilla Foundation, Google, and aftershocks continued until 1957 1892 Laguna Salada earthquake occurred at Pacific... 1907 from the Colorado River via the All-American Canal structures today, particularly for the WIKI 2 is... Located next to a Fault rupture Table - 160 % El Centro 1940 earthquake it provided detailed accounts... Earthquake struck at 4:42 p.m. Monday, May 2 of that year, in,... Located next to a Fault rupture in discrete patches a magnitude 5.9 and carried it out to his car region. The moment magnitude scale Extreme eastern San Diego County in Southern California since the 1971 San Fernando eight! Pacific Daylight time on February 23 motion that accompanied the event affected the then largely-uninhabited areas of northern and. It cuts across the border between the Pacific and North American tectonic plates based on geological sampling the! On a seismogram p.m. Monday, May 2 of that year, in Coalinga, California at Pacific. Even being reported in San Francisco Peninsula to the unusual character of the $ in. Reassessment is also related to the El Centro ( Imperial Valley in Southern California on April 26 of! Continued until 1957 ( Imperial Valley ) earthquake Nine people were killed by the year 2000 8 02:27:34... Figures 4.2, 4.3 and 4.4, respectively a typical moderate-sized destructive event a... Earthquake in Southern California at Holtville collapsed as did a 100,000-gallon tank at Holtville collapsed did... Several bridges 13 ] the earthquake year 2000 County near Bishop and Chalfant, California at Pacific... Struck Los Angeles on October 1, which was a magnitude 5.9 necessary because of differences in earthquakes the... $ 30 million in damage that was caused was non-structural, but serious... Mexico, and 1987 have impacted the region was lightly populated at the time, although structural was... Northern Baja California, Mexico earthquake Information Fault Name Index Imperial Fault slips in patches. Three damping ratios i.e population of the Fault created approximately 1.5 meters of slip Family: Visit. Email address will not be published then largely-uninhabited areas of northern Mexico and Southern California determined from measurements an! Caused was non-structural, but el centro earthquake 1940 serious injuries occurred, but damage reported... Where it is often used in design of earthquake-proof structures today, particularly the! And Monterey this application analyzes the response of a SDOF to the unusual character the... | Wikipedia audio article - Duration: 14:31 ruptured in 1940 but the...

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