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The 1971 San Fernando earthquake (also known as the 1971 Sylmar earthquake) occurred in the early morning of February 9 in the foothills of the San Gabriel Mountains in southern California. The unanticipated thrust earthquake had a magnitude of 6.5 on the Ms scale and 6.6 on the Mw scale, and a maximum Mercalli intensity of XI ( Extreme ).
In 1933, the Long Beach earthquake occurred in a populated area and damaged or destroyed many public school buildings in Long Beach and Los Angeles. Some decades later, the San Fernando earthquake affected the San Fernando Valley north of Los Angeles with heavy damage to several hospitals. In both cases, the perception of California policy ...
The Van Norman Dams, also known as the San Fernando Dams, were the terminus of the Los Angeles Aqueduct, supplying about 80 percent of Los Angeles' water, [5] until they were damaged in the 1971 San Fernando earthquake and were subsequently decommissioned due to the inherent instability of the site and their location directly above heavily populated areas.
Measuring M w 6.7, it was the largest earthquake recorded in the Los Angeles area since the 1971 San Fernando earthquake (M w 6.7). However, unlike the Northridge earthquake, the San Fernando shock occurred on a north–northeast dipping thrust fault beneath the San Gabriel Mountains.
The death toll could be among the worst for a natural disaster in U.S. history: nearly 1,800. Los Angeles County could suffer the highest death toll, more than 1,000, followed by Orange County ...
None. The 1968 Borrego Mountain earthquake occurred on April 8, at 18:28 PST in the geologically active Salton Trough of Southern California. The Salton Trough represents a pull-apart basin formed by movements along major faults. This region is dominated by major strike-slip faults one of them being the San Jacinto Fault which produced the 1968 ...
The $2-million project, approved by the Los Angeles County Board of Supervisors, is scheduled to begin in December and be completed around June. Initial earthquake retrofit approved for historic L ...
Officials have identified 33 buildings owned by Los Angeles County as having a flaw that could cause them to collapse in a major earthquake. These 33 important buildings owned by L.A. County could ...