Jessica DePaolis (second from left) and the team of researchers studied and compared sedimentary core samples in Montague Island, Alaska, and found evidence that four of the past eight earthquakes ...

Classical seismological techniques such as earthquake hypocentral locations and focal-mechanism studies continue to play an important role in the understanding of active-tectonic processes, but newer ...

The rift is more than a simple crack—it is an evolving fault line, with some sections quietly detaching and others remaining seismically active. Researchers warn that the rupture is nearing completion ...

Beneath the bustling cities and rugged landscapes of Northern California, a hidden and potentially dangerous world of seismic activity has been silently unfolding for years. The region, known for its ...

Groundbreaking research has provided new insight into the tectonic plate shifts that create some of the Earth's largest earthquakes and tsunamis. Groundbreaking research has provided new insight into ...

Volcanic eruptions frequently interfere with human affairs; impacts range from minor nuisances to major disasters. Some 50 to 65 different volcanoes typically are active in any given year, and among ...