Fort Tejon Earthquake, Calif., 1857
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- Work cat.: Meltzner, A.J. Foreshocks and aftershocks of the great 1857 California earthquake, 1998.
- Southern Calif. Earthquake Data Center website, July 12, 2005:chronological earthquake index (Fort Tejon Earthquake, January 9, 1857, 35⁰43ʹN, 120⁰19ʹW about 72 km (45 miles) northeast of San Luis Obispo, about 120 km (75 miles) northwest of Bakersfield, magnitude Mw8.0 (approx.))
- Large earthquakes in the United States, via USGS Earthquake Hazards Program website, July 12, 2005(Fort Tejon, California 1857 01 09 16:24 UTC Magnitude 7.9, largest earthquake in Calif.)
- USGS Earthquake Hazards Program - Southern California website, July 12, 2005:general quake info/faults, past earthquakes & geology/California (1857 1 9, 16hr. 0min., 35⁰42.00 120⁰18.00, mag. 8.25, Great Fort Tejon earthquake)
- Meltzner, A.J. The Great 1857 "Fort Tejon" Earthquake, via WWW, July 12, 2005(largest earthquake to hit Southern California in historic times occurred on January 9th, 1857, and it came to be known as the great "Fort Tejon" earthquake. Technically, Parkfield was the epicenter of this earthquake, as it was the origin of the rupture; Fort Tejon was approximately the midway point of the rupture. The earthquake actually acquired its name because Fort Tejon was the only populated locality near the fault, and naturally, the Fort suffered more damage than the rest of sparsely-populated 1857 Southern California; 1857 "Fort Tejon" earthquake)
- Santa Barbara earthquake history, via WWW, July 12, 2005:1857 (1857 Fort Tejon Earthquake; 1857 Ft. Tejon Earthquake; two fatalities, one near Fort Tejon, where many buildings were destroyed; latest estimate of the size of this earthquake is magnitude 7.9)
- Wikipedia, July 12, 2005(Fort Tejon earthquake: The Fort Tejon earthquake occurred on January 9, 1857, with an estimated magnitude of 7.9. It ruptured the San Andreas Fault for a length of 362 kilometers (225 miles), between Parkfield and San Bernardino. Displacement along the fault was 9 meters (30 feet). The epicenter of this earthquake is thought to have been located between Parkfield and Cholame)
Wikipedia description:
The 1857 Fort Tejon earthquake occurred at about 8:20 a.m. (Pacific time) on January 9 in central and Southern California. One of the largest recorded earthquakes in the United States, with an estimated moment magnitude of 7.9, it ruptured the southern part of the San Andreas Fault for a length of about 225 miles (350 km), between Parkfield and Wrightwood. Although the epicenter or starting location of the earthquake was near Parkfield, the event is referred to as the Fort Tejon earthquake, because that was the location of the greatest damage. Fort Tejon is just north of the junction of the San Andreas and Garlock Faults, where the Tehachapi, San Emigdio, and Sierra Pelona Transverse Ranges come together. The earthquake is the most recent large event to occur along that portion of the San Andreas Fault, and is estimated to have had a maximum perceived intensity of IX (Violent) on the Modified Mercalli scale (MMI) near Fort Tejon in the Tehachapi Mountains, and along the San Andreas Fault from Mil Potrero (near Pine Mountain Club) in the San Emigdio Mountains to Lake Hughes in the Sierra Pelona Mountains. Accounts of the events' effects varied widely, including the time of the main shock as well as foreshocks that occurred at several locations earlier in the morning.
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