Cause of the Earthquake:
In this area the Pacific plate moves northwest in relation to the North American plate at approximately 45 mm per year. This has led to deformations within the Earth's crust causing elastic strain energy to be stored.
In this specific case it is thought that the sudden rupture / movement of a strike slip / transform fault has caused the earthquake.
More specifically, the earthquake is thought to have occurred on the southern portion of the Laguna Salada fault, which is part of a series of northwest trending strike slip faults that run parallel to (but are not part of) the San Andreas fault zone.
However it should be noted that the area is tectonically complex with a large number of faults. As such investigations are underway and it may be found that another of the local faults caused the earthquake.
Magnitude:
According to the US Geological Survey the magnitude of the earthquake was 7.2.
Location of Epicentre:
The earthquake oocured aproximately 40 miles south of the US border along the plate boundary between the North American and PAcific plates. The exact location has been pinpointed as 32.128°N, 115.303°W.
Depth to hypocentre:
Shallow - 10 km deep.
No.
Earthquake happen regularly. It is not possible to say where and when they most recent was unless a date is specified.Here are some;A recent earthquake was in Haiti at a 7.2 and then another earthquake struck Chile at an 8.8 right after Haiti's earthquake. All in 2010There are earthquake in Ca all the time everyday.The most recent earthquakes, on Wednesday, November 4, 2009, occurred in California. Specifically, six were recorded in southern California. Another two were recorded in the nearby Baja California, Mexico. Still another one was recorded in central California. Yet another two were recorded in northern California.Going up the western coast of the United States of America, another earthquake was recorded off the coast of Oregon. Two more were recorded in Alaska, in the south and on the Alaskan peninsula.Going westwards from the California coast, and across the Pacific Ocean, an earthquake was recorded in the Samoan Islands. Another was recorded in Mindanao, Philippines. Still another was recorded in northern Qinghai, China.Returning to the Americas, an earthquake was reported on the Pacific side of South America, at Antofagasta, Chile. Within the Caribbean that separates coastal North and South Americas, an earthquake was reported in the area of the Dominican Republic. Another two were reported in the area of Puerto Rico. Leaving the Caribbean and heading eastwards across the Atlantic, an earthquake was reported in the Azores Islands.
Russia's most recent earthquake was a 4.7 which occurred on April 25, 2011.
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The April 13, 2010 6.9 magnitude earthquake was centered in Qinghai province in Western China near Tibet.
April 8 2010 in San Diego CA
San Francisco
400
No.
One that would be included would be the San Francisco Earthquake of 18 April 1906.
San FranciscoThe San Francisco earthquake of 1906 was a major earthquake that struck San Francisco, CA and the coast of Northern California at 5:12 A.M. on Wednesday, April 18, 1906. The most widely accepted estimate for the magnitude of the earthquake is between 7.7 and 8.2, and the resultant fires (from gas lighting and other damage) almost totally destroyed the urban areas of the city.
I think that the major event in California is when The gold rush appear and when the
China's Qinghai Hit By Magnitude 6.9 Quake and At Least 67 Dead
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Over 400 people dead and around 10,000 injured
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san franciscoThe Great 1906 San Francisco Earthquake5:12 AM - April 18, 1906(in California)