Earthquake Studies For Southern California EarthquakeCountry.info claims that earthquakes are as Southern Californian as waves at the beach and traffic on the freeways. Lets dwell on earthquakes in Southern California as well as the faults associated with our area. The San Andreas fault is one of the most significant faults affecting our area. We know that the San Andreas fault produces large earthquakes and that many other faults are also hazardous (EarthquakeCountry.info n.p.).
So, lets examine San Andreas fault zone more thoroughly. We should notice that it is right-lateral strike-slip.
San Andreas faults length is 1200 kilometers, 550- km south from Parkfield and 650 km northward. According to the information from SCEC.org, its slip rate is about 20 to 35 mm per year. The last major rupture: January 9, 1857 (Mojave segment) and April 18, 1906 (Northern segment) (SCEC.org, n.p.).
San Andreas fault zone San Andreas Pass Area is quite complex. It interacts with other significant faults such as the San Jacinto fault zone and the Pinto Mountain fault. The San Jacinto fault zone Type of faulting is described as left-lateral strike-slip with at least 73 km length.
The nearest communities are Twentynine Palms, Joshua Tree and Yucca Valley. According to SCEC.org, the San Jacinto fault zones most recent ruptures are: Holocene; experienced triggered slip in 1992, due to shaking from the Landers earthquake. The Pinto Mountain fault Type of faulting: right-lateral strike-slip; minor right-reverse. It is 210km length, including Coyote Creek fault. According to SCEC.org, the nearby communities are: Lyttle Creek, San Bernardino, Loma Linda, San Jacinto, Hemet, Anza, Borrego Springs and Ocotillo Wells. The most recent surface rupture: April 9, 1968 on Coyote Creek segment (SCEC.org n.p.) Fort Tejon Earthquake Fort Tejon Earthquake is considered to be both the most recent and the most significant earthquake to rupture through Wrightwood. Time of rupture: January 9, 1857 Exact location: 35 43′ N, 120 19′ W about 72 km (45 miles) northeast of San Luis Obispo, about 120 km (75 miles) northwest of Bakersfield, as shown on the map (epicenter location uncertain) (SCEC.org) Actually, it was one of the greatest and destructive earthquakes ever recorded in America.
The Essay on Earthquake Fault San One
Earthquake The San Francisco Earthquake of 1906 was ranks as one of the most significant earthquakes of all times. The quake occurred on April 18, 1906 at approximately 5: 12 a. m. (local time. ) Rupturing the northernmost 430 kilometres of the San Andreas fault from northwest of San Juan Baptists to the triple junction at Cape Mendocino. The fore shock, a minor shock before the earthquake ...
Fort Tejon Earthquake left an amazing surface rupture scar over 350 kilometers in length along the San Andreas fault (SCEC.org).
At the same time, only two people were reported to die in result of this earthquake, probably, due to the nature of the earthquake setting. California was poorly populated, especially in the areas where the shaking was strong. However, the effects of quake were dramatic. One can say that were the quake shock to happen today, the damage would probably run into billions of dollars and thousands of deaths. Scec.org claims that as a result of that quake, the current of the Kern River was turned upstream and the waters of Tulare Lake were thrown upon its shores. The surface rupture was very extensive: the San Andreas fault was broken for at least 350 kilometers with an average slip of 4.5 meters and a maximum displacement of about 9 meters in the Carrizo Plain area.
The epicenter location is unknown. Some geologists consider that it was located near fort Tejon the area of strongest shaking. At the same time, some geologists claim that as far as there is evidence that the foreshocks could have happened in the Parkfield region, the epicenter is located somewhere near the northwestern end of the surface rupture, somewhere near Cholame.
The Essay on Earthquake Preparedness Press Release
How can my family be prepared for an earthquake? This question haunts countless residents in the Los Angeles area every day. Hopefully we here at the Earthquake Preparedness Center can shed some light on how you can protect your family. My name is Darin Fort and I am the Director of Earthquake Preparedness for Los Angeles. As with any danger, knowledge of the event is of upmost importance. Some ...
Bibliography:
SCEC.Org Website, Fort Tejon Earthquake. Retrieved May 17, 2006. http://www.data.scec.org/chrono_index/forttejo.htm l USGS Website. Retrieved May 17, 2006. http://pubs.usgs.gov/gip/earthq1/.
