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This is the Olive View Medical Center. There are various names for this earthquake. The colored dots represent locations of the respective aftershocks of each quake.  |  The worst damage was done here being newly opened (one Once the shaking was over and rescuers started to assess the damage, the imminent fear of a new catastrophe arose: The Van Norman Dam just northwest of the town of San Fernando, where 3.6 billion gallons of drinking water were stored, was severely damaged. The documentary moves along quickly and uses actual newsreel footage as well as well-staged re-enactments, blended together in a leanly edited narrative. The Symlar San Fernando Valley Earthquake of 1971. On February 9th, 1971, at approximately 6:00am, the foothills of the San Gabriel Mountains were struck by a 6.7 earthquake. 1971 Pantera Repair Paint Video Daily Motion Channel Simi Valley, California. In comparison, both the Loma Prieta (1989) and Northridge (1994) quakes measured “IX Violent” on the Mercalli Scale, two steps below this quake (the Sylmar Earthquake, 1971). See more ideas about sylmar, earthquake, san fernando valley. 0:51. The red line is the fault on which the Northridge quake occurred in 1994. C. R. Allen and his co‐workers assigned the main shock parameters: 34°24.7′N, 118°24.0′W, focal depth h = 8.4 km, and local magnitude M L = 6.4. The largest events in the San Fernando earthquake series, initiated by the main shock at 14h 00m 41.8s UT on February 9, 1971, were chosen for analysis from the first three months of activity, 87 events in all. (The earthquake of 9-Feb-1971). It occurred at 6:00:41. Today in Earthquake History: San Fernando 1971. Much like the Northridge Earthquake 23 years later, the quake also tore apart freeway overpasses. The 1971 San Fernando earthquake, also known as Sylmar earthquake, struck the San Fernando Valley near Sylmar at 6:00:55 a.m. PST on Feb. 9, 1971… from California Geology, April/May 1971, Vol. There are various names for this earthquake. The aftermath led to major changes for building construction and the Alquist-Priolo Act. Below, a look back at the Sylmar Earthquake. This event included 4 aftershock quakes with magnitudes around 5. In comparison, both the Loma Prieta (1989) and Northridge (1994) quakes measured “IX Violent” on the Mercalli Scale, two steps below this quake (the Sylmar Earthquake, 1971). It caused hospitals and schools to collapse, brought down sections of elevated freeways and cost 64 people their lives. 21st century Contemporary era. Download a PDF of "San Fernando Earthquake of February 9, 1971" by the National Research Council for free. PACOIMA (CBSLA) — A 4.2-magnitude earthquake struck the Pacoima area of the San Fernando Valley early Thursday morning and was felt across the Southland. Later known as the San Fernando Earthquake, the quake was responsible for $500 million dollars worth of damage and causes 65 deaths (most of the deaths occurred when the Veteran's … Also known as the Sylmar Earthquake, the magnitude-6.5 quake was reported on a Tuesday at about 6:01 a.m. Its origin was in the foothills of the San Gabriel Mountains north of Los Angeles, but shaking was felt across a widespread part of the San Fernando Valley. Photo: E. Leyendecker, USGS. Within the southern California region alone, the historic record suggests that an earthquake of about this magnitude occurs on the average of once every four years ( Fig. It is evident, however, that more faults in the San Fernando Valley area may be active today than are now recognized. The documentary moves along quickly and uses actual newsreel footage as well as well-staged re-enactments, blended together in a leanly edited narrative. The question of whether it is wise to live below a dam behind which millions of acre feet of water are stored is usually rather low on people's lists of daily worries. San Fernando has had: (M1.5 or greater) 0 earthquakes in the past 24 hours 1 earthquake in the past 7 days; 21 earthquakes in the past 30 days; 320 earthquakes in the past 365 days It bans construction on active faults in California. On Feb. 9, 1971, the deadly San Fernando Earthquake rattled Southern California, leaving more than 60 people dead and causing more than $500 million in property damage. San Fernando Valley Earthquake 1971 Sylmar California. San Fernando Valley. But the threat of disaster didn't end when the shaking stopped. The 1971 San Fernando earthquake (also known as the Sylmar earthquake) happened in the early morning of February 9 in the San Gabriel Mountains.It was at the northern edge of the San Fernando Valley in southern California.The quake measured 6.6 on the Richter scale.The damage was severe near the San Fernando Valley. The Slides in the San Fernando Dams During the Earthquake of February 9, 1971. All rights reserved. Objects under such forces would have been weightless for a few seconds, like astronauts in space. There are various names for this earthquake. The epicenter of the quake was located in the San Gabriel Mountains, with numerous nearby Los Angeles communities affected. Although the Richter magnitude of the tremblor was 6.6, ranking it as moderate to large, but not great, it shook a wide, … This is the San Fernando Valley. There was fear of an imminent collapse of the Van Norman Dam, which held more than 3.5 billion gallons of water just northwest of San Fernando. The San Fernando earthquake has been extensively studied by many seismologists, geologists, and earthquake … It was the first strong quake to hit the area since the 1893 Pico Canyon quake, with an epicenter several miles west of Sylmar. Forty-six years ago today, the possibility of such a sudden dam burst was the hair-raising fear, in the chaos and devastation following the magnitude 6.7 earthquake that struck the San Fernando Valley north of Los Angeles. Seismologists call it the San Fernando earthquake. Sylmar) earthquake (Mw = 6.6) occurred in the early morning hours of February 9. Saved from scvhistory.com At the 140-ft high Lower dam, the entire upstream face slid into the reservoir leaving only 5 ft of freeboard. Following these to earthquakes, geologists are now sure that many more of these hidden faults crisscross deep beneath the San Fernando Valley. 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