The epicenter for all the quakes was about one mile east of Hayward, in San Francisco's East Bay, according to the U.S.

A preliminary magnitude 3.7 earthquake rattled the Bay Area on Thursday afternoon after a series of smaller quakes hours ...

Distances from the stations to the earthquake are estimated from the difference between P and S wave arrival times: You have just figured out how far your seismograph is from the epicenter and how ...

Information from three stations can be used in order to locate the epicentre of the earthquake. If we know the time lag between the arrival of P and S waves, we can calculate the distance of the ...

Folks settling in for the evening on Monday night got quite the shock when an earthquake briefly rattled through the area.

They surmised it was formed by a slip on the fault that triggered one of the strongest earthquakes on record. The site lies 7,500 meters below the sea surface. The cliff is part of a ground uplift ...