1952 kern county earthquake

The strong motion records that were acquired from the event were significant, and a reconnaissance report was recognized for its coverage of the event, and how it set a standard for those types of engineering or scientific papers. Seismic and aseismic deformation associated with the 1952 Kern County, California, . Kern County Earthquake, 1952: This earthquake was the largest in the conterminous United States since the San Francisco shock of 1906. Found inside – Page 3Residents of the Pass reported feeling two earthquakes on January 4 , the first at 10:50 A.M. , the second at 3:32 P.M. , P.S.T. , a third tremor was ... ( P ) Strong and widely felt aftershock of 21 July 1952 Kern County earthquake . Found inside – Page 24The 1952 Kern County earthquakes convincingly showed the effectiveness of earthquake bracing in significantly reducing life hazards . San Francisco , California Earthquake of April 18 , 1906 The 1906 San Francisco earthquake ... Be Truthful. Found inside – Page 13The merits of the Field Act have been demonstrated in every damaging California earthquake since its implementation. One of the first tests of its effectiveness came with the July 21, 1952 Kern County earthquake (ML = 7.7). I remember waking up as my bed was hitting the wall. There was a problem saving your notification. Three additional shocks on July 23 were particularly destructive. Found inside – Page 23... that were first observed in quake ( Richter and others , 1958 ) , the 1952 Kern October of 1969 ( fig . 7 ) . Therefore it is not surpris- County earthquake ( Richter , 1955 ) , and the 1966 ing that a major earthquake within the ... Found inside – Page 90The Lake Isabella region of the southern Sierra Nevada lies between the epicenters of the 1946 Walker Pass earthquake ( ML 6.3 ) and of the 1952 Kern County earthquake ( Ms 7.7 ) . Earthquakes in this area occurring during the summer of ... 1). Your current subscription does not provide access to this content. Upon request to kclref@kerncountylibrary.org digitized works can be removed from public view if there are rights issues that need to be resolved. A small sector of damage near Bealville corresponded to a maximum Mercalli intensity of XI (Extreme), though this intensity rating was not representative of the majority of damage. Seismologists have recently proposed the hypothesis that the quake is an exceptional instance of induced seismicity triggered by petroleum extraction from the Wheeler Ridge oil field; production from the field began 98 days before the quake about .62 miles from the White Wolf fault. Keep it Clean. The event was the largest earthquake to occur in California since the 1906 San Francisco earthquake and resulted from a 60 km (37 mi) slip of the White Wolf Fault, a normal fault north of the Tehachapi Mountains. An early estimate reported in the Los Angeles Times had the damage at $2.6 million with 700 families affected in Tehachapi alone, where most of the town's buildings sustained damage. This will create an email alert. Found inside – Page 1203... m4 0.00089 Poisson's ratio v - 0.334 Unit weight kN/m3 26.6 Damping ratio % 3 5 GROUND SEISMIC MOTION Real acceleration-time history of the 1952 Kern County earthquake used in the current study to simulate ground seismic motion and ... Found inside – Page 35age dip on the Kern Front fault is about 70 ° W. , we could anticipate a maximum vertical separation of about 0.8 m ... Because the interval 1931-63 includes both the 1952 Kern County earthquake and the inception of the southern ... The 1952 Kern County earthquake occurred on July 21 in the southern San Joaquin Valley and measured 7.3 on the moment magnitude scale. It was the largest earthquake to strike Southern California since the Fort Tejon earthquake of 1857 and the 1872 Lone Pine earthquake, causing immense and widespread damage. He went on to say, "There is no doubt that yesterday's quake is the largest Southern California has had in this century and is the largest to occur in this area since modern instruments were available. The mainshock, which was not preceded by any significant foreshocks, occurred 98 days after the initial production of oil in Eocene strata at depths reaching 3 km, within ~1 km of the White Wolf fault (WWF). This . California State Route 99 was also blocked by a landslide ten miles south of Gorman, but the highway was quickly reopened later in the day. As part our commitment to scholarly and academic excellence, all articles receive editorial review. It claimed 12 lives and caused property damage estimated at $60 million. The White Wolf Fault (as illuminated by the aftershocks) was found to be curved, with less dip on the northeast end, though that zone also had a higher strike-slip component. Found inside1952. KERN. COUNTY/ARVIN. TEHACHAPI. EARTHQUAKE. At magnitude 7.3 (as will be seen, the number varied), the Kern County Earthquake, also called the Arvin Tehachapi earthquake—Arvin being near the epicenter and Tehachapi having the most ... The 1952 Kern County earthquake occurred on July 21 in the southern San Joaquin Valley and measured 7.3 on the moment magnitude scale. File an "I felt it" report if you felt the quake! An earthquake of magnitude 9.0 hit the coast of Kamchatka along a 350-mile subduction zone fracture, on November 4, 1952. Were the 1952 Kern County and 1933 Long Beach, California, Earthquakes Induced? To activate your online access as a print subscriber please enter your last name and address as it appears on your invoice. Was the Mw 7.5 1952 Kern County, California, earthquake induced (or triggered). Foam rubber modeling, numerical modeling, and field studies have shown that intense ground motions close to 1.0 g are possible on the hanging wall side of the fault during some large thrust earthquakes. [14], Rocks are classified as precarious if their toppling accelerations are 0.3 g or less and semi-precarious at 0.3–0.5 g. The area around the White Wolf fault was surveyed by a group of earth scientists with extensive experience estimating thousands of rock formations. Found inside – Page 524FIGURE 19.4 Results of a time - dependent moment - tensor inversion of the 1952 Kern County earthquake . Source time functions for each moment tensor element are shown for two depths . The preferred solution involves a pure thrust at 20 ... The epicenter of the quake was at the 56 mile faults southwestern end at a point where it may end or merge with the east-west trending Pleito thrust fault. Last . Several recent studies have presented evidence that significant induced earthquakes occurred in a number of oil-producing regions during the early and mid-twentieth century related to either production or wastewater injection. In statements made in the July 22 Los Angeles Times, the shock was compared to the 1857 Fort Tejon event. KERN COUNTY – Sixty-nine years ago this week, on July 21, 1952 at approximately 4:52 a.m.; a magnitude 7.3 earthquake shook the southern San Joaquin Valley which took the lives of 12 people, injured hundreds of others and caused an estimated $60 million in damage. Boron area Arrests and Court Appearances for Nov. Kern County Library attempted to find rights owners without success but is eager to hear from them so that we may obtain permission, if needed. Get an email notification whenever someone contributes to the discussion. The 1952 Kern County earthquake is the second-largest earthquake in California in the twentieth century; it was preceded by other events in the region, including a M w 4.6 earthquake on 23 Feb. 1939 (Fig. Other fault zones are present in the region, and have been of interest because they may have been responsible for minor earthquakes, but they are considered not as significant as the Kern Canyon, Owens Valley, and San Andreas Faults. The Hay Building at 19th and Eye streets after the 1952 earthquakes. E11: 1952 Bakersfield Earthquake. Other large events have affected the area as well, like the January 1857 Fort Tejon earthquake that severely affected Fort Tejon (about 15 miles (24 km) south of Wheeler Ridge). Fresno. Don't Threaten. Repercussions of the sequence of earthquakes were still being felt in the heavily damaged downtown area of Bakersfield well into the 1990s as city leaders attempted to improve safety of the surviving unreinforced masonry buildings. A number of fires were initiated by the July 29 aftershock (intensity VII (Very strong)) and other severe damage was caused by it, especially to buildings that had already been damaged (including one in Bakersfield). All 417 inmates housed at the Tehachapi Prison for Women were evacuated because of damage from the quakes and according to the California Department of Corrections, the facility was left unusable; most of the injured received treatment at Kern County General Hospital and some sought treatment at Tehachapi Valley Hospital. Official websites use .gov During both my education and my career as a professional geologist I was exposed me to a lot of interesting geology. Despite decades of research, significant discrepancies exist among seismic and geodetic interpretations for this event. A common occurrence of shattered rock that has been observed on the hanging wall of thrust faults reinforces the existence of the strong motions, but precarious rock surveys have indicated that smaller ground motions are present on the foot wall side of the fault. Sorry, there are no recent results for popular commented articles. 1952,Kern,County,earthquakeThe,1952,Kern,County,earthquake,occurred,on,July,21,in,the,southern,San,Joaquin,Valley,and,measured,73,on,the,moment,magnitude,sca. Secure .gov websites use HTTPS The White Wolf Fault was the source of the 1952 Kern County earthquake on July 21 (M=7.3). Early production was from shallow depths (<1000′), within sections 27 and 28 (see Fig. Thank you for reading! 1952 Kern County earthquake. Based on this spatial and temporal proximity, we explore a potential causal relationship between the earthquake and oil production. The 1952 Kern County earthquake occurred on July 21 in the southern San Joaquin Valley and measured 7.3 on the moment magnitude scale. Walls and other portions of buildings that had been previously damaged took a second hit from the 07:53 M5.2 event, and a house that saw only minor damage during the mainshock was nearly destroyed by it. Note the sharp bend in the track and the landslide covering the track closer to the tunnel's entrance. Note the sharp bend in the track and the landslide covering the track closer to the tunnel's entrance. [11], The railroad was reopened in 25 days by a construction force of one-thousand men and 175 pieces of earth-moving equipment including seven track gangs, nine bridge and building gangs, and personnel and equipment from Morrison-Knudsen. Share. Found inside – Page 62Only a small amount of earthquake resistive reinforced brick construction existed , with the major exception being one ... The 1952 Kern County earthquakes convincingly showed the effectiveness of earthquake bracing in significantly ... See also: List of earthquakes in California. The Kern County Courthouse, St. Francis Church, and the original Beale Memorial Clock Tower were all damaged and were leveled or rebuilt. Share with Us. The strong motion record that was obtained from the 1952 shock, as well as the accelerogram from the 1940 El Centro earthquake, were the most widely used data sets until the 1971 San Fernando earthquake. South of the White Wolf Fault near . The strongest aftershock in the sequence came on August 22 as a magnitude 5.8 event with a maximum perceived intensity of VIII (Severe). The main shock occurred at 4:52 am Pacific Daylight Time (11:52 UTC), killed 12 people and injured hundreds, and caused an estimated $60 million in property damage. "I was an eight year old, living in Los Angeles (Westchester, by the airport). The Kern County Earthquake of July 21 is commonly referred to as the Tehachapi Earthquake, and for good reason. Image / Car smashed by falling debris in 1952 Kern County earthquake. Winds SSW at 10 to 20 mph. In Bakersfield, windows were broken and dislodged plaster littered residential and commercial districts, and the county jail was damaged. The California Institute of Technology at Pasadena recorded 188 aftershocks of magnitude 4.0 and higher through September 26, 1952; six aftershocks on July 21 were of magnitude 5.0 and higher. Commented about the event was 100 Times that of the series of earthquakes that hit Kern earthquake... An explanation for why significant earthquakes are not commonly induced by production proximity. As my bed was hitting the WALL to access our e-Edition and content! Of previously unused, local seismic records Beach some windows were broken near Bealville corresponded to small. 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