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A Magnitude 3.6 earthquake struck in Southern California on Sept. 16, 2024, according to the United States Geological Survey, marking the second temblor to hit the region in less than five days.
A hypothetical magnitude 7.5 quake on the Puente Hills thrust fault — which runs under highly populated areas of L.A. and Orange counties — could kill 3,000 to 18,000 people, according to the ...
The Los Angeles Department of Water and Power, as well as the County of Los Angeles, investigated and verified that local soil conditions contributed to the ground displacement and resulting destruction. The area of surface breaks on the ground at the site was 900 ft (270 m) (at its widest) and stretched 4,000 ft (1,200 m) down a 1% grade slope ...
Density system unit unit-code symbol or abbrev. notes sample default conversion combination output units Metric: kilogram per cubic metre: kg/m3 kg/m 3: 1.0 kg/m 3 (1.7 lb/cu yd)
UTC time: 1987-10-01 14:42:18: ISC event: 454412: USGS-ANSSComCat: Local date: 1 October 1987 (): Local time: 7:42 a.m. PDT [1] Magnitude: 5.9 M w [2]: Depth: 14 km (8.7 mi) [1] Epicenter: 1]: Type: Blind thrust: Areas affected: Greater Los Angeles Southern California United States: Total damage: $213–358 million [3]: Max. intensity: MMI VIII (Severe) [1]: Peak acceleration: 0.63 g [4 ...
12 ft (3.7 m) First section length: 233 mi (375 km) Second section length: 137 mi (220 km) Capacity: First Aqueduct 422 cu ft/s (11.9 m 3 /s) Second Aqueduct 290 cu ft/s (8.2 m 3 /s) History; Construction start: First Aqueduct October 1908 Second Aqueduct September 1965: Opened: First Aqueduct November 1913 Second Aqueduct June 1970: Location ...
The La Habra earthquake was caused by oblique thrust faulting on the Coyote Hills segment of the Puente Hills Thrust Fault System. [1] [3] The Puente Hills Fault is a blind thrust fault that runs north and west from Orange County to Los Angeles. It was the fault that was responsible for the 5.9 M w 1987 Whittier Narrows earthquake on October 1 ...
On October 17, 1989, at 5:04 p.m. local time, the Loma Prieta earthquake occurred at the Central Coast of California. The shock was centered in The Forest of Nisene Marks State Park in Santa Cruz County, approximately 10 mi (16 km) northeast of Santa Cruz on a section of the San Andreas Fault System and was named for the nearby Loma Prieta Peak in the Santa Cruz Mountains.