LOCATION: 34° 24.67' N, 118° 24.04' W. MAGNITUDE: M W 6.5. A Broadcaster's Guide to Reporting Earthquake Intensity, The Strong Motion Instrumentation Program, reviews the geotechnical and seismic aspects of hospital and public school construction, CALIFORNIA GEOLOGY™ magazine, April-May 1971 (24/04-05), The California Geological Survey, A History of California’s State Geological Surveys, 1850-2015, FACT SHEET: 50th Anniversary of the San Fernando (Sylmar) Earthquake, Geologic map of the San Gabriel Mountains, California, Geologic map of the San Fernando Earthquake area, Surface effects map of the San Fernando Earthquake area, Geologic section across San Fernando Earthquake fault scarp exposed in trench near mouth of Lopez Canyon, Geologic cross-sections of the Sylmar-San Fernando area, Map of surface breaks resulting from the San Fernando, California, earthquake of February 9, 1971, [external page] Earthquake Overview – M 6.6 10km SSW of Agua Dulce, CA (1971 San Fernando earthquake) – United States Geological Survey, [external page] Earthquake Photo Collections – 1971 San Fernando, CA – United States Geological Survey, [external page] 1971 San Fernando earthquake - Wikipedia. The Hospital Safety Act of 1972 requires, in part, the consideration of geological and seismological issues to ensure new or retrofitted hospital buildings are sited, designed, and constructed to remain operable following earthquakes. TYPE OF FAULTING: thrust. The epicenter was located approximately 10 km northeast of LSFD at a focal depth of approximately 9 km. 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. p. vii. The Epicenter Was NOT in Sylmar And The Actual Size Of The Quake Really Was...? On February 9, 1971 at 6:01 am PST, a devastating M6.6 earthquake struck the densely populated metropolitan area of Los Angeles, leaving death and destruction in its wake. It occurred at 6:00:41. About: 1971 San Fernando earthquake. DEPTH: 8.4 km. The greatest damage was in the San Fernando area northwest of Los Angeles. Category:1971 San Fernando earthquake. 1, Table 1 ), and in this sense the San Fernando earthquake should have come as no … The earthquake resulted in 65 deaths and more than 2,000 people injured. Burbank, California - Wikipedia In the 1971 San Fernando earthquake , which took place along the western edge of the Sierra Madre Fault, surface ruptures were nearly 12 mi long, including one portion a few miles northwest of Glendale. The presence in California of major universities with strong and active earthquake research Much like the Northridge Earthquake 23 years later, the quake also tore apart freeway overpasses. SMIP’s data influences building codes, resulting in structures that are more earthquake resistant. FAULT INVOLVED: San Fernando fault zone; minor offset reported on the eastern Santa Susana fault zone. Steinbrugge, K. V.; Schader, E. E.; Moran, D. F. (1975), "Building damage in the San Fernando Valley", San Fernando, California, earthquake of 9 February 1971, Bulletin 196, California Division of Mines and Geology, pp. The San Fernando earthquake has been extensively studied by many seismologists, geologists, and earthquake engineers. • The epicenter of the magnitude 6.6 disastrous earthquake was in the foothills of the San Gabriel Mountains, at the northeastern edge of the Valley. The earthquake was generated by thrust faulting on the Sierra Madre fault. Alquist-Priolo Earthquake Fault Zones, (APEFZs) regulate the construction of buildings across the traces of active faults to mitigate damage from surface fault rupture. TIME: February 9, 1971 / 6:01 am PST. The 1971 San Fernando, or Sylmar, earthquake was the worst to hit an urban area of California since the 1933 magnitude-6.4 Long Beach quake. 152 relations. It led to 64 deaths and more than $500 million in damage. 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