According to the U. Geological Survey, this morning at a. PT, a 4. It came about thirty minutes after a 2. Luckily, there were no reports of severe damage or injury.
Odds are high that nothing bigger will happen, but every felt quake is a reminder that California is earthquake country. The area also experienced some pretty intense aftershocks. Soils in lowland areas away from major faults may be subject to liquefaction. Houses on liquefied soil may settle or even move laterally on gentle slopes.
Landslides are possible on steep hillsides. Shasta Cascade. In addition to volcanoes, this is also earthquake country. The Modoc Plateau has both active volcanoes and faults.
Very large earthquakes that occur closer to the Northern California coast could cause damaging levels of ground shaking here too. Greater Bay Area.
The main trace of the San Andreas fault runs through much of the State of California, including the Santa Cruz Mountains and up the San Francisco Peninsula, before heading offshore at Daly City and returning onshore again at Bolinas and continuing up the Marin and Sonoma County coasts.
These and several other major faults in the region are part of the San Andreas fault system and can cause damaging earthquakes, like the Loma Prieta earthquake.
Delta Sierra. Landslides, Liquefaction, Or Levee Failure. The mountains and the valley have been shaped by repeated earthquakes on faults in the region. Moderate earthquakes have occurred in the high Sierra, the foothills and in the Central Valley. These occurred on active faults found in wide zones along the crest of the Sierra Nevada, through Lake Tahoe, along the foothills, and in the western Sacramento Valley.
Large quakes from distant faults such as those in the San Francisco Bay Area or east of the Sierra Nevada can also cause significant damage to homes, businesses, and communities, especially in areas where water levels are high in soft soils that can settle unevenly during shaking. Central Coast. Large earthquakes will occur along the San Andreas fault system —the major geologic boundary between the North American and Pacific tectonic plates—which passes through much of the State of California. Central Valley South.
Landslides, liquefaction, or levee failure. Shaking can begin suddenly but have lasting impacts. The San Andreas fault system is to the west, the Garlock fault is to the south and the faults of the Sierra Nevada are to the east. The San Andreas fault system is the major geologic boundary between the North American and Pacific tectonic plates and passes through much of the state. It will create the biggest earthquakes—as big as magnitude 8—that will disrupt the whole region.
But smaller magnitude earthquakes can also cause damaging levels of ground shaking. A study by the U. Geological Survey indicates that a portion of the San Andreas fault near Tejon Pass could be overdue for a major earthquake. Californians get warnings of impending earthquakes through their mobile phones, radios and other devices after state investment in an early detection system.
The ShakeAlert system, which was available to download in January , was created by teams from several universities and could help save lives in the event of a quake. It uses sensors placed around major towns and cities to detect tremors before they reach urban centres, giving time for an alert to be sent out to the population before the quake arrives. On Twitter it states: "A ShakeAlert is an early warning from a system that detects significant earthquakes so quickly that alerts can reach many people before shaking arrives.
They say a major earthquake will soon strike which could cause widespread devastation, particularly in southern California. Jump directly to the content. Sign in.
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