parkfield california earthquake timelineaudit assistant manager duties and responsibilities
A magnitude 5.2 earthquake occurred in Redding on Thanksgiving Day in 1998, causing minor damage such as broken windows and fallen household and retail items. The light quake was felt throughout the Los Angeles area and in parts of the San Fernando Valley. In 1984 the United States Geological Survey predicted that a Magnitude 6 earthquake would occur on the San Andreas fault near Parkfield within five years of 1988. Inversion of strong . shuoma@stanford.edu; Department of Earth Science and Institute for Crustal Studies, University of California, Santa Barbara, Santa Barbara, California, USA . Learn how to be better prepared to survive and recover from an earthquake by reading about what to do before an earthquake strikes. The earthquake- and fire-wrecked Hibernia Bank Building in San Francisco, following the 1906 earthquake. The prediction was based on a sequence of 6 similar earthquakes that occured every 22 years (on average) from 1857 to 1966. Additionally, there were a couple of small aftershocks. Although earlier earthquakes have been documentedsuch as significant movement on the southern San Andreas fault all the way back to the 1600sthe earliest reported earthquake in California was on July 28, 1769, noted by members of a Spanish expedition to chart a land route from San Diego to Monterey. It was felt in many parts of Northern California and Western Nevada. Tectonic setting and station distribution for the 2004 September 28 M w 6.0 Parkfield, California, earthquake. The quakes were a result of normal faulting and strike slip faults near the Antelope Valley fault, which runs north-south along the Sierra Nevada range front. In August of 2020, a swarm of earthquakes had also struck in the same area, the largest being a magnitude 4.6 at Bombay Beach. This was the largest earthquake in Los Angeles since the aftershocks of the 1994 Northridge quake. The damage, to at least 50 buildings, stretched from Newport Beach to San Diego, and there was also a small landslidein eastern San Diego County. More than 30 people were treated for minor injuries. One death is attributed to the March 22 earthquake. People reported feeling shaking as far as Sacramento and Los Angeles, too. Campers at Mount Whitney were evacuated after a rockslidewhich was triggered by the shakingcaused truck-sized boulders to fly off the mountain, with one landing on the trailhead. Their conclusions are based on analyses of reports of earthquakes in the Parkfield area in 1857, 1881, and 1901 and seismograph records of events near Parkfield in 1922, 1934 and 1966. Since then, the North American plate has ground against the Pacific plate at a boundary called a strike-slip fault. Damage at Fort Tejon was most severe. On May 15, 1910, a magnitude 6.0 (ML) earthquake occurred northwest of Lake Elsinore, about 15 miles south of Riverside. The thrust fault is considered especially dangerous as it runs along a dense urban area (downtown Los Angeles). Recent Earthquakes in California and Nevada == PRELIMINARY EARTHQUAKE REPORT == U.S. Geological Survey, Menlo Park, California . It recorded the highest seismic intensity of IX on the . A M5+ nearby could cause damage, but that area would be limited. The San Andreas fault is one of the largest faults in the world, running more than 800 miles from the Salton Sea to Cape Mendocino. To the northwest of the epicenter, the San Andreas continually slips, causing frequent minor tremblors. The quake caused significant property damage (estimated at more than $2 million), as well as one death and around 50 injuries. This magnitude 6.2 (ML) earthquake on April 24, 1984, presumably on the Calaveras fault, was felt throughout Central California. Chimneys fell and, in Fields Landing, at least four wood-frame houses were shifted off their foundations, with two falling partly to the ground. In the late afternoon of August 13, 1978, a magnitude 5.1 (ML) earthquake occurred about a mile southeast of Santa Barbara. The second, a magnitude 6.3 (ML) earthquake occurred around 9 p.m. and caused many of the structures weakened in the first quake to collapse. Damage was concentrated closer to the town of Morgan Hill and the Anderson Reservoir. Damage was estimated at $65 million, with 2,000 houses needing chimney repair. Earthquakes may occur regularly here because the location is about midway on a fault segment between a locked segment to the south (last major earthquake 1857) and a creeping segment to the north where two tectonic plates are continuously moving without major earthquakes. Ground motion refers to the movement of the ground during an earthquake. The quake it is notable because its epicenter was thought to be somewhere along the Elsinore fault zone, in Temescal Valley, and no other earthquakes this large have been recorded along this fault zone. The quake occurred on the San Jacinto fault, which is considered by experts to be the most active fault in Southern California. There were hundreds of reported aftershocks. The strong shaking damaged roads, homes, and utilities, according to the Humboldt County Office of Emergency Services. Past earthquakes have also occurred to the east of Parkfield at about the same distance from the San Andreas fault near Coalinga and Avenal. History of significant earthquakes in the Parkfield area Fortunately, our state was still developing, and the area with the strongest earthquake activity was not well populated. Additionally, trees fell in the San Bernardino Mountains nearby. The quake also caused property damage in El Centro, Brawley and Calexico and in Mexicali, Mexico, and it damaged irrigation systems in the Imperial Valley, such as the All American Canal. Longtime residents of the Central Valley will remember the Coalinga earthquake of May 2, 1983, which occurred on a previously unknown fault and injured 94 people, mostly from furniture and other items falling or being thrown about, and from people being knocked to the ground from the shaking. It ruptured the same segment that ruptured in 1966 and was the seventh earthquake on this stretch of the fault since 1857. On June 29, 1925, a magnitude 6.8 earthquake occurred near Santa Barbara. There have been no indications found that could have been used to predict this earthquake. New springs were formed, cracks appeared in roads, and the mission in Ventura sustained major damage. The next moderate Parkfield earthquake is expected to occur before 1993. This natural color image of Christchurch, New Zealand, is overlain with a measure of the ground shaking in the area during the February 2011 earthquake. There was a large aftershock sequence, also offshore. On August 10, 2001, a magnitude 5.5 earthquakeoccurred in a remote area of Northern California. .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}354854N 1202226W / 35.815N 120.374W / 35.815; -120.374 The absence of remotely triggered seismicity in Gujarat, NW India On January 17, 1994, a magnitude 6.7 earthquake struck near Northridge. It was a Sunday, which meant business districts in San Jacinto and nearby Hemet were empty, so the number of fatalities and injuries was lower than it might have been on a weekday, with only a few injuries and one reported death. The quake also caused landslides, which resulted in at least one car accident, and blocked roads, including the road from Hemet to Idyllwild. Abstract Five moderate (magnitude 6) earthquakes with similar features have occurred on the Parkfield section of the San Andreas fault in central California since 1857. East Compton Junior High School, in Compton damaged by the 1933 Long Beach earthquake. The earthquake associates itself with a 135 km long rupture length which progressed southeastwards towards its most significant aftershocks (M w 7.3) that occurred after 16 days. On October 16, 1999, the magnitude 7.1 (Mw) Hector Mine earthquake occurred in the Mojave Desert. The 7.1 earthquake was stronger than any earthquakes in the region in about 20 years. The largest, a M4.9, struck at 5:31 p.m. The quake was felt as far away as San Diego and Santa Barbara, Las Vegas, Nevada, and even Phoenix, Arizona. On March 17, 2014, a magnitude 4.4 earthquake occurred about two miles south-southeast of Encino. The quake also damaged roads, water mains and gas lines in these counties; disrupted utility services in Sonoma County; and caused fires in Napa County. On December 21, 1954, a magnitude 6.5 earthquake occurred near Eureka. A tsunami warning system is a network of sensors and communication systems designed to detect and issue warnings for potential tsunamis, which can be triggered by earthquakes and other large-scale disturbances in the ocean. Near Winchester, two miners were trapped in a mine temporarily. PDF Seismological Implications of The Ground Motion Data From the 2003 San Shuo Ma, Shuo Ma. Damage included broken ceiling tiles, plaster, chimneys, windows and walls at buildings in Bishop, as well as damage to homes and utility lines in Chalfant when mobilehomes were shaken off their supports. Although its epicenter was in a sparsely populated area, it was said to have been felt throughout the Los Angeles area, Arizona, Nevada, and Idaho. Seismic shaking, compression and extension along the length of the roadway were responsible for the damage in this image. On October 21, 1942, an earthquake of magnitude 6.6 (Mw) occurred south of the Salton Sea, about 27 miles west of the town of Brawley and about 60 miles east of San Diego on the southern section of the Coyote Creek fault, in the southernmost section of the San Jacinto fault zone. The San Andreas fault runs through this town, and six successive magnitude 6 earthquakes occurred on the fault at unusually regular intervals, between 12 and 32 years apart (with an average of every 22 years), between 1857 and 1966. Building codes were also improved. This earthquake led to the California Legislature enacting the Field Act, which gave the State Division of Architecture authority and responsibility for approving design and supervising construction of public schools. In Solano County, it injured at least 49 people, caused severe damage to 10 buildings and caused moderate damage to more than 30 buildings. The earthquake was felt in Los Angeles, Ventura, San Bernardino and Orange counties. Luckily, the quake caused no major damagejust some fallen household items and store merchandisebut was felt throughout a large portion of Southern California. By amazing coincidence, just one day before the earthquake and its aftershocks happened, four new seismographs were installed in the area near the epicenter! Damage occurred well beyond San Francisco, such as into nearby Santa Cruz, San Benito and Monterey counties, where buildings collapsed, bridges were damaged, and river courses were altered. There had been five magnitude 6 earthquakes in the same area prior to the 1966 earthquake, occurring in 1857, 1881, 1901, 1922 and 1934. Additionally, utility services were briefly disrupted in some locations. The quake was felt widely in Northern California and in parts of Oregon and Nevada. April 2015, M w 7.8, Gorkha, Nepal earthquake is one of the disastrous earthquakes which caused widespread damage in Nepal and nearby countries. A falling chimney killed one person, and the quake caused several injuries and caused significant property damage in Eureka, Arcata, Fields Landing and other nearby towns. The earthquake was felt in parts of California, Oregon and Nevada. Within 48 hours of the initial quake, 72 magnitude 4.0 4.9 events, six magnitude 5.0 5.5 events and three events of magnitude 6.0 6.3 struck. There also were minor injuries, power outages and transit disruptions, and a fire began in a movie theater in Santa Ana as a result of a damaged light fixture. A small cluster of foreshocks began almost a day before the mainshock. The quake fractured ground in some places, caused rockslides and landslides in others, and caused significant property damage. The quake was about 10 miles southwest of Ferndale, California, in Humboldt County. The magnitude 5.1 La Habra earthquake occurred on March 28, 2014. The quake caused no injuries and minimal property damage, but was of great interest to American geologists. Finite element modeling shows this event to have been too small to significantly stress the lower crust and upper mantle, thus viscoelastic relaxation did . In earthquake-prone areas, building codes often include seismic safety requirements to. Members of the expedition led by Gaspar de Portol were camped along the Santa Ana River when they felt a strong earthquake. The earthquake also caused small displacements along the Superstition Hills fault, Imperial fault and Banning-Mission Creek fault, miles from the epicenter. Fatalities would have been even higher if the quake had struck during school hours: 70 schools were destroyed, and 120 were damaged. 1 Introduction. The hypocentral depth is 9 km ( 6 miles). Earthquake History The Mw 6.0 Parkfield earthquake struck central California at 17:15:14 UTC on 28 September 2004. For further context for those of us in earthquake country, a M4.0 nearby will give residents a jolt but cause little damage. Monitoring the deformation at Parkfield is now being done with GPS. Substantial aftershocks continued for more than a week after the initial event, moving in a northwesterly progression. The earthquake damaged a fire station at Pacheco Pass, and a nearby lookout station was vacated because of damage, as well. In Palm Springs, two people were injured, buildings were damaged or collapsed, and thousands of dollars of merchandise was destroyed when it fell from shelves. Still, the quake cracked buildings in San Diego, destroyed adobe buildings at the Carrizo stage depot, and destroyed a church and a school in Paradise Valley. The quake occurred on a previously unknown fault. June 28, 1992 | M6.5. On September 28, 2004 a magnitude 6.0 earthquake struck Central California near the town of Parkfield. Scientists with the USGS and UC Berkeley had predicted, with a 90 to 95% confidence level, that an earthquake would strike the Parkfield area between 1985 and 1993. Get started at StrengthenMyHouse.com. The quake resulted in an estimated $4 million in total damage. On January 9, 1857 an earthquake with an approximate magnitude of 7.9 (Mw) ruptured about 75 miles northwest of Bakersfield. Recognition of clustering in background micro and Langbein1 described the experiment's instrumenta- seismicity and geophysical indicators of fault zone fluids tion and findings as of 1993. In Paso Robles, the collapse of one of these such building types collapsed, killing two women. On April 21, 1918, a magnitude 6.8 (ML) earthquake occurred near the town of San Jacinto. Damage included the shaking down of small houses, fallen and cracked chimneys, broken windows, broken water mains, cracked highways and damaged walls. There were numerous large aftershocks, including one of approximately magnitude 6.5 (ML) on April 29. It was felt in many parts of Northern California, including the Bay Area, the Sacramento area and Santa Rosa. On June 10, 2016, people near Borrego Springs were woken up at 1:04 a.m. by a magnitude 5.2 earthquake. It caused eight deaths. This earthquake was strong enough to be felt hundreds of miles away, in San Jose, as well as in Oregon and Nevada. A collapsed overpass at the interchange of Interstates 5 (the Golden State Freeway) and 210 (the Foothill Freeway). It caused one death and more than 40 injuries, including the critical injury of a young boy who was hurt by falling fireplace bricks. Although most of California's quakes are small in magnitude and cause little or no damage, California experiences more than 100 per day! Coordinates: 35.815N 120.374W Activity snapshot 35 hours after Sept 28, 2004 large earthquake. Liquefaction was widespread, causing damage to farmland, highways, buildings and homes. Area Code: 805 Zip Code: 93451 (The same zip code as San Miguel, from which all the mail is delivered) GPS Coordinates: 35.8999, -120.43285 Status: Unincorporated township Founded: 1850's; original name was Russelsville. The earthquake supposedly even broke glass and stopped clocks at the railroad stop in what is now Needles, near the Arizona border. Considering the size of the quake, damage was light, although structural damage did occur. On March 19, 1954, a magnitude 6.4 (Mw) earthquake occurred about 30 miles south of Indio. The quake hit the insurance industry hard: many insurers had greatly underestimated the costs associated with a major earthquake. The magnitude 6.0 earthquake was widely felt, with reports as far away as the San Francisco Bay Area and Sacramento in California, and Carson City in Nevada. Overview of earthquakes used in the Parkfield study, where non-Parkfield events are marked with their year of occurrence. Landslides and ground cracks occurred closer to the epicenter. On April 4, 2010, the magnitude 7.2 El Mayor-Cucapah earthquake occurred in Mexico. 1950 2000 Jan 9, 1857, 1857 Fort Tejon earthquake Apr 19, 1906, 1906 San Francisco earthquake Mar 22, 1957, 1957 San Francisco earthquake Oct 17, 1989, 1989 Loma Prieta earthquake Sep 28, 2004, 2004 Parkfield earthquake You might like: Atomic theory Timeline CINEMTICA extraclase de sociales Ancient Greece Peloponnesian War Sacramento, CA 95814, Privacy & Social Media Policies|Terms of Use | Site Map, Sort California's Earthquake Timeline (currently sorted by most recent earthquakes), The sudden movement of the Earth when two large pieces of the Earth's crust, called. Magnitude: 0.4 - duration . It caused slight to moderate damage in Joshua Tree, Yucca Valley, Desert Hot Springs, Palm Springs and Twentynine Palms. There were also cracks on the shoulder of Highway 1, as well as landslides blocking the roadway near Mussel Rock. The largest, a 6.0 magnitude, occurred along the eastern edge of the Sierra Nevada, a major physiographic boundary along the California-Nevada border. Parkfield is located on the San Andreas fault and the town is about half way between San Francisco and Los Angeles. The last set of measurements were made in the spring of 2005. Image of the Day Damage included broken chimneys, separation of houses from their foundations, and broken utility lines. It caused damage to houses in Ferndale, Petrolia, Upper Mattole, Pepperwood, Alton, Fortuna and other local towns. A magnitude 5.7 earthquakeon August 6, 1979, injured 16 people in the towns of Hollister and Gilroy and caused an estimated $500,000 in property damage in these towns. Scientists now use the moment magnitude scale, which measures the movement of rock along the fault, and accurately measures larger earthquakes, which can last for minutes and affect a much larger area. activity in the Parkfield region of California be-tween 27 July 2001 and 21 February 2009. May 4, 1983. The next significant earthquake was anticipated to take place within the time frame 1988 to 1993. After a foreshock with a magnitude of 4.6 two days earlier, on June 24, a magnitude 5.8 earthquake struck about 12 miles southeast of Lone Pine, in Inyo County. A house damaged by the Loma Prieta earthquake. Land, Image of the Day In Los Angeles, about 100 miles away from Desert Hot Springs, a 5,800-gallon water tank split open. Parkfield, California, sits on the San Andreas Fault near the end of a major historic rupture in 1857. While the quake caused no deaths, the shaking was strong enough that Disneyland, Knotts Berry Farm and other amusement parks in the area reportedly evacuated and temporarily closed rides. There was extensive damage to a railroad section, and to land used for agriculture and irrigation. Photo credit: U.S. Geological Survey. Property damage was estimated at $2.5 million. Feb 11, 1971. On June 22, 1915, two separate earthquakes occurred about an hour apart near El Centro. In Hollister, a real estate offices roof caved in, and a department store sustained damage to beams. There were also widespread landslides and rockfalls. Internal structure of the San Andreas fault at Parkfield, California San Diego, Los Angeles and Big Sur are on the Pacific plate. This quake was notable because it was the largest earthquake at that timeand the first to cause surface rupture (about three miles of rupture)in the Mojave Block tectonic region. Great circle paths to station DBN are indicated. And if you own your home, one of the best things to do before the next big earthquake strikes is to strengthen it with a seismic retrofit. Walls and buildings cracked in Escondido, Corona and Pasadena. For example, in Gilroy, a wall cracked in the City Hall building, and a ceiling caved in inside a room within the Municipal Courthouse. Why Central Coast CA town is Earthquake Capital of the World | The It happened just an hour after a magnitude 3.6 foreshock in the same area. [3] In this paper we build a kinematic rupture model for the 2004 Parkfield event by inverting strong-motion seismic data. This included damage to chimneys in older houses, broken glassware in stores, and structural damage to five buildings in the town of Gilroy. Introduction [2] A large shallow earthquake is typically followed by aftershocks that diminish in rate approximately as the inverse of the elapsed time since the mainshock, a phenomenon known as the Omori's law [ Omori, 1894 ]. A magnitude 4.5 earthquake struck in Los Angeles, about 10 miles east of the Los Angeles Civic Center, late at night on September 18. The 2004 Mw6.0 Parkfield, California, earthquake: Inversion of near Fortunately, no lives were lost. Damage included cracks to government buildings, such as the county courthouse and Eurekas City Hall, as well as damage to concrete and wood-framed buildings in the area, such as cracked chimneys, plaster and windows. Twenty-seven people in the small community of Lone Pine died, and nearly all stone or adobe buildings there were destroyed. A magnitude 2.8 aftershock occurred immediately after the initial main shock. Seismology is the study of earthquakes. Water pipes broke in Pasadena and at the University of California, Los Angeles, and a water main broke in San Diego. The California Office of Emergency Services estimated $7 million in damage to private property and an additional $500,000 in damage to local-government-owned facilities. In San Francisco, the earthquakes damaged chimneys, plaster, windows and merchandise. National Earthquake Prediction Evaluation Council working Group, Earthquake Research at Parkfield, California, 1993 and Beyond - Report of the NEPEC Working Group to Evaluate the Parkfield Earthquake Prediction Experiment. Damage such as fallen chimneys and cracked walls occurred in nearby Loyalton, Sierraville, Boca, Hirschdale and Hobart Mills. Striking a little before midnight on July 22, 1923, a magnitude 6.3 (ML) earthquake occurred about seven miles south of San Bernardino. Nearly two dozen aftershocks followed.
