| Earth science (494) |  |
| Geological fault (14) | |
| Geological formation (4) | |
| Earth science (494) | |
| Geological fault (14) | |
| Geological formation (4) | |
Southern California Long Overdue for A major Earthquake A trench at the Bidart Fan sector of the San andreas fault. Researchers find major quakes on the southern section, on average,
Southern California is long overdue for a major earthquake along the San andreas fault, according to a landmark study of historic seismic activity released August 20, 2010.
found that earthquakes along the San andreas fault have occurred far more often than previously believed. For years, scientists have said major earthquakes occurred every 250 to 450 years along this part of the San Andreas. The new study found big temblors on the fault every 88 years, on average.
Other seismic experts described the revelation as a major change in the way they think about earthquake risks along the southern San andreas fault. Thomas Jordan,
The San andreas fault is considered one of the most dangerous in Southern California, partly because it is so long that its southern section is capable of producing a temblor as large as magnitude 8. 1. By contrast,
Solving the puzzle In the 1960s geologists thought straight up and down-down (vertical) faults bounded the edge of continents similar to the San andreas fault that slices through California.
The counterclockwise rotation was created a concept to explain the hundreds of miles of offset recently discovered along the San andreas fault.
The evidence places the two earthquakes in 1838 and 1890 on the San andreas fault as theorized by many researchers based on written accounts about damage to Spanish-built missions in the Monterey and San francisco bay areas.
sub-fault of the San andreas fault zone. That quake which disrupted baseball's World series forced her family to camp outside their home.
and like the 1989 event occurred on a sub zone of the San andreas fault. Conventional thinking Streig said has suggested that the San andreas fault always ruptures in a long-reaching fashion similar to the 1906 earthquake.
This study is the first to show three historic ruptures on the San andreas fault outside the special case of Parkfield Weldon said referring to a region in mountains to the south of the Santa cruz range where six magnitude 6-plus earthquakes occurred between 1857 and 1966.
but now we know the San andreas fault ruptured three times on the same piece of the fault in less than 100 years.
This research furthers our understanding of the connectivity of the various sections of California's San andreas fault
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