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Ship captains and other explorers also documented earthquakes. As Spanish missions were constructed beginning in the late 18th century, earthquake records were kept. After the missions were secularized in 1834, records were sparse until the California gold rush in the 1840s. From 1850 to 2004, there was about one potentially damaging event per ...
Los Angeles earthquake could refer to: 1933 Long Beach earthquake; 1952 Kern County earthquake; 1971 San Fernando earthquake; 1987 Whittier Narrows earthquake; 1991 Sierra Madre earthquake; 1992 Landers earthquake; 1994 Northridge earthquake; 2008 Chino Hills earthquake
The epicenter region of the earthquake was located in the San Fernando Valley, about 30 km (19 mi) northwest of downtown Los Angeles. The United States Geological Survey (USGS) placed the hypocenter 's geographical coordinates at 34°12′47″N 118°32′13″W / 34.213°N 118.537°W / 34.213; -118.537 and at a depth of 11.31 miles ...
On March 20, 2008, a Los Angeles Times article stated that "the 1933 quake changed the landscape, leading to improved school construction standards and a heightened awareness of earthquake risks." [13] Among other buildings, the La Grande Station, the main Los Angeles terminal of the Atchison, Topeka, and Santa Fe Railroad, was heavily damaged ...
A pie chart comparing the seismic moment release of the three largest earthquakes for the hundred-year period from 1906 to 2005 with that for all earthquakes of magnitudes <6, 6 to 7, 7 to 8, and >8 for the same period. The 2011 Japan quake would be roughly similar to Sumatra. Earthquakes of magnitude 8.0 and greater from 1900 to 2018.
[3] [8] It was the strongest earthquake to occur in the greater Los Angeles area since the 1994 Northridge earthquake. [7] As reported by The Orange County Register, three microearthquakes, all less than magnitude 3.0, occurred in Anaheim Hills, 7 miles (11 km) southwest of Chino Hills, two months before the Chino Hills earthquake. [9]
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 ...
The 1991 Sierra Madre earthquake occurred on June 28 at 07:43:55 local time with a moment magnitude of 5.6 and a maximum Mercalli intensity of VII (Very strong). The thrust earthquake resulted in two deaths, around 100 injuries, and damage estimated at $33.5–40 million.