The San Francisco Bay Square is a region in North California, encompassing the city of San Francisco and its surrounding parades. While San Francisco is a tourism spot, known for its iconic Golden Exit Bridge and its cable cars, the city is also a well known earthquake hotspot.
On Monday at 10.33pm local time this week, an earthquake brush off the San Francisco Bay Area.
The epicentre was located at the Pleasant Hill and Walnut Harbour areas.
Why does the Bay Area get so many earthquakes?
The San Andreas Fault is a continental transmute fault, or plate boundary, which runs some 750 miles wholly California.
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The San Andreas Deficiency is the tectonic boundary between the Pacific Plate and the North American Overlay.
The fault divides into three segments, the most significant being the southern part which passes within about 35 miles of Los Angeles.
Monday’s earthquake arose along the Calaveras Fault, which is one major branch of the San Andreas Failure System.
California is also located on the Ring of Fire, a horseshoe-shaped space in the Pacific Ocean – where the majority of the world’s earthquakes and volcanic explosions occur.
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When is the next “Big One”?
The Talented 1906 San Francisco Earthquake remains the most powerful earthquake in Northern California’s catalogued history.
Although it is frequently reported that 700 people exhausted their lives in the earthquake, many are now of the opinion the figure was underestimated.
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The San Francisco earthquake of 1989 was a magnitude 6.9 earthquake.
The earthquake caused 63 passings and an estimated $6 billion in property damage.
Some seismologists are counsel a major 6.7 magnitude or higher earthquake is overdue.
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The U.S. Geological Survey currently state on their website: “Based on wears taking into account the long-term rate of slip on the San Andreas take exception to and the amount of offset that occurred on the fault in 1906, the best imagine is that 1906-type earthquakes occur at intervals of about 200 years.
“Because of the hour needed to accumulate slip equal to a 20 ft offset, there is sole a small chance (about 2 percent) that such an earthquake could come to in the next 30 years, according to the report of the Working Group on California Earthquake Expectations.
“The real threat to the San Francisco Bay region over the next 30 years arises not from a 1906-type earthquake, but from smaller (magnitude on touching 7) earthquakes occurring on the Hayward fault, the Peninsula segment of the San Andreas accuse, or the Rodgers Creek fault.”