The term seismograph usually refers to the combined seismometer and recording device. The first known earthquake detector was invented in 132 A.D. by the Chinese astronomer and mathematician Chang ...

Residents across eastern Oklahoma reported feeling an earthquake early Monday morning, the U.S. Geological Survey said.

Shaking was reported in communities east of Los Angeles early Tuesday afternoon due to a magnitude-3.1 earthquake in Ontario. The quake with a depth of about 3.5 miles was reported at 12:56 p.m ...

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A 3.5-magnitude earthquake struck near Ontario this afternoon, according to the U.S. Geological Survey (USGS). The quake hit at 12:56 p.m. with an epicenter 1.24 miles southeast of Ontario.

New York City was rattled harder than some surrounding areas during last April’s northeast earthquake because of a dangerous, newly discovered fault line that sits at a rare angle — and it ...

“Most of those are less than magnitude 2.5 that nobody ever feels,” says Dr. Mitch Withers, an associate research professor at The Center for Earthquake Research Information (CERI) at the ...

In the U.S., 45 states and territories are at moderate to very high risk of earthquakes. Globally, 81% of earthquakes occur along the world's earthquake belt, the circum-Pacific seismic belt, found ...

and parts of San Diego County. People reported feeling the earthquake from Palmdale to San Diego. The USGS asked people to submit reports of what kind of shaking they may have felt — or didn’t ...

An icon in the shape of a lightning bolt. Impact Link Your phone blares, "Earthquake!" The voice instructs you to duck, cover, and hold on. About 30 seconds later, the shaking starts. At first ...