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Probabilistic seismic hazard map. The earliest known earthquake in the U.S. state of California was documented in 1769 by the Spanish explorers and Catholic missionaries of the Portolá expedition as they traveled northward from San Diego along the Santa Ana River near the present site of Los Angeles. Ship captains and other explorers also ...
The probability of a serious earthquake on various faults has been estimated in the 2008 Uniform California Earthquake Rupture Forecast. According to the United States Geological Survey, Southern California experiences nearly 10,000 earthquakes every year. [3] Details on specific faults can be found in the USGS Quaternary Fault and Fold Database.
The 5.8 magnitude 1980 Livermore earthquake occurred on this fault. [1] The fault creeps at a rate of at 2 mm/year. [2] The predicted probability of a major earthquake on this fault within the next 30 years is relatively low, at 3%, compared to nearby faults such as the Hayward Fault.
It is capable of producing magnitude-9.0 earthquakes and tsunami waves about 100 feet tall. In 2022, two people died after a ma gnitude - 6.4 earthquake struck offshore near Ferndale , not far ...
Estimates predict a multi-segment rupture of the fault zone is capable of producing an earthquake of magnitude 7.6–7.9. [6] [3] An earthquake this large in such close proximity to densely-populated southern California would be devastating. [7] In 1986, a M s 5.8 earthquake struck off the coast of Oceanside, killing 1 and injuring 29 more.
A map shows California’s tsunami hazard area, which is highlighted in yellow. ... A magnitude 9.2 earthquake in the Gulf of Alaska caused damage and loss of life along the West Coast in 1964 ...
0–9. 1700 Cascadia earthquake; 1769 earthquake; 1812 San Juan Capistrano earthquake; 1812 Ventura earthquake; 1838 San Andreas earthquake; 1857 Fort Tejon earthquake; 1868 Hayward earthquake; 1872 Owens Valley earthquake; 1892 Laguna Salada earthquake; 1892 Vacaville–Winters earthquakes; 1898 Mare Island earthquake; 1899 San Jacinto earthquake
The largest recorded megathrust earthquake was the 1960 Valdivia earthquake, estimated between magnitudes 9.4–9.6, centered off the coast of Chile along the Peru-Chile Trench, where the Nazca plate subducts under the South American plate. [26] This megathrust region has regularly generated extremely large earthquakes.