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San Francisco Earthquake Danger Zones
Clustered around the 1,070-foot tower are a collection of high rises built on the soft soil and sand on the edge of the bay. They represent a bold symbol of a new San Francisco, but also a potential danger for a city that sits precariously on unstable, earthquake-prone ground.
California isn’t the only state with a serious earthquake hazard. There are several lesser-known fault zones lurking in other parts of the country that are just as dangerous, if not more dangerous, than the famed San Andreas Fault.
SAN FRANCISCO — Sailors arriving in San Francisco in the 19th century used two giant redwood trees perched on a hill to help guide their ships into the bay. The redwoods were felled for their lumber at around the time of the gold rush, but San Francisco now has a new beacon: Salesforce Tower, the tallest office building in the West.
An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves.
USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards
The Hayward Fault Zone is a geologic fault zone capable of generating destructive earthquakes.This fault is about 74 mi (119 km) long, situated mainly along the western base of the hills on the east side of San Francisco Bay.
San Andreas Fault, major fracture of the Earth’s crust in extreme western North America.The fault trends northwestward for more than 800 miles (1,300 km) from the northern end of the Gulf of California through western California, U.S., passing seaward into the Pacific Ocean in the vicinity of San Francisco.
When the 2011 earthquake and tsunami struck Tohoku, Japan, Chris Goldfinger was two hundred miles away, in the city of Kashiwa, at an international meeting on seismology.
Economic analysis and research summaries for a general audience.
When an earthquake event occurs, ground rupture is only where the fault zone moves. Those constructions built adjacent to the fault will survive while structures built across these zones will collapse.