Map showing the San Jacinto Fault Zone outlined in red
The San Jacinto Fault Zone (SJFZ) is a major strike-slip fault zone that runs through San Bernardino, Riverside, San Diego, and Imperial Counties in Southern California. The SJFZ is a component of the larger San Andreas transform system and is considered to be the most seismically active fault zone in the area. Together they relieve the majority of the stress between the Pacific and North American tectonic plates.
The SJFZ itself consists of many individual fault segments, some of which have only been individualized as recently as the 1980s, but activity along the line of faults has been documented since the 1890s. One segment of the SJFZ, the Anza seismic gap, has not experienced any major activity since instrumental records have been kept. Each segment was evaluated for its seismic risk and was assigned a probability for the occurrence of a large rupture for the thirty-year period starting in 1995.
While several of the large earthquakes along the SJFZ have not resulted in significant property damage or loss of life (due to their remote location) the cities of Hemet and San Jacinto were both heavily damaged in two significant events in 1899 and 1918. The recurrence interval for a series of large earthquakes starting in 1899 (including the 5.9 1937 Terwilliger Valley earthquake) was 18, 5, 14, 5, 12, 14, and 19 years, yet there has not been a strong earthquake for 36 years (since the 1987 Superstition Hills and Elmore Ranch sequence).
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The SanJacintoFaultZone (SJFZ) is a major strike-slip faultzone that runs through San Bernardino, Riverside, San Diego, and Imperial Counties in Southern...
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The New Madrid Seismic Zone (NMSZ) (/ˈmædrɪd/), sometimes called the New Madrid Fault Line, is a major seismic zone and a prolific source of intraplate...
mainshock occurred on a segment of the SanJacintoFaultZone. This highly segmented, 210-km-long strike-slip fault that forms part of the boundary between...
estimated to be $200,000. The SanJacintoFaultZone is a major strike-slip faultzone that runs through San Bernardino, Riverside, San Diego, and Imperial counties...
earthquake along the Cascadia Subduction Zone could trigger a rupture along the San Andreas Fault. In the south, the fault terminates near Bombay Beach, California...
is a complex zone of faults that run parallel to the SAF. The two main faults are the SanJacintoFaultZone (SJFZ) and Elsinore FaultZone. The SJFZ is...
The San Felipe FaultZone (also known as the Agua Caliente or Murrieta Hot Springs faultzone) is an active Quaternary faultzone made up of continuous...
Magistrale, Harold, The relation of the southern SanJacintofaultzone to the Imperial and Cerro Prieto faults in Contributions to Crustal Evolution of the...
Fault Zone is thought to accommodate slip from both the San Andreas and the SanJacintofaultzones. However, studies covering the last few hundred years...
every notable fault, but only major faultzones.[clarification needed] Lists of earthquakes Tectonics Yeats, R. (2012), Active Faults of the World, Cambridge...
the San JacintoFaultZone in the east to offshore Malibu in the west, and is defined primarily by moderate to shallow north-dipping faults, with a conservative...
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of local fault hazards, and constructed the campus upon an elevated pressure ridge (the Bunker Hill Dike) along the SanJacintoFaultZone, which bisects...
to the north and the SanJacinto Mountains to the south. The pass was formed by the San Andreas Fault, a major transform fault between the Pacific plate...
The secondary faults lay to the west of the main SAF at the extreme southern portion, including the active and young SanJacintoFaultZone, which may be...
of earthquakes with the SanJacintoFaultZone, located about 4 miles (6.4 km) from the reservoir, and the San Andreas Fault, located about 19 miles (31 km)...
San Gabriel Mountains, southwest by the San Timoteo badlands, and southeast by the Crafton Hills. The San Andreas Fault and SanJacintoFaultzones enter...
size of many ruptures. The largest probability decrease is on the SanJacintofault, which went from 32% to 9%. Again this is due to multifault rupturing...
margin of an arid Pleistocene lake. It is in the SanJacintoFaultZone area, including in the San Felipe Hills. It preserves fossils from the Pleistocene...
J. "SanJacintoFaultZone in Southern California". Quaternary to Recent Basin Development and Neotectonics of the Central SanJacintoFaultZone, Southern...
traverse. The San Gabriel Mountains are composed of a large fault block between the San Andreas FaultZone to the north, and the San Gabriel Fault and the Sierra...
springs including SanJacinto, Eden, Saboba and Gilman are active in the SanJacinto Mountains due to the presence of the SanJacintofaultzone and Elsinore...
compared to the Imperial Fault and the SanJacintoFault. Other faults that crossed the shores of Lake Cahuilla are: The Extra faultzone, which divides a northern...
The San Diego Trough FaultZone is a group of connected right-lateral strike-slip faults that run parallel to the coast of Southern California, United...
Salton Sea. With the SanJacintoFaultZone to the northwest, the Elsinore fault to the south-southwest, and the Imperial fault centered directly under...
major fault-bounded blocks of the northern part of the Peninsular Ranges. The SanJacintoFaultZone is to the northeast. Mountain ranges of San Bernardino...
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