New model of Earth's interior reveals clues to hotspot volcanoes

Scientists at the University of California, Berkeley, have detected previously unknown channels of slow-moving seismic waves in Earth's upper mantle, a discovery that helps explain "hotspot volcanoes" that give birth to island ...

Earthquakes actually aftershocks of 19th century quakes

( -- When small earthquakes shake the central U.S., citizens often fear the rumbles are signs a big earthquake is coming. Fortunately, new research instead shows that most of these earthquakes are aftershocks ...

Sichuan quake was once-in-4,000-year event: scientists

People who were killed, injured or bereaved in the 2008 Sichuan earthquake had the cruel misfortune to be victims of an event that probably occurs just once in four millennia, seismologists said on Sunday.

Research explains strength of earthquake shaking in Nenana Basin

Earthquakes in the Nenana Basin region of Interior Alaska last longer and feel much stronger than a quake of comparable magnitude would in a non-basin region, due to the behavior of the seismic waves once they reach the area.

Possible chemical leftovers from early Earth sit near the core

Let's take a journey into the depths of the Earth, down through the crust and mantle nearly to the core. We'll use seismic waves to show the way, since they echo through the planet following an earthquake and reveal its internal ...

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