seismic

A Volcano's Scream
10:51 pm
Mon July 15, 2013

Before an Eruption, Scientists Record a Volcano's Primal Scream

Mt. Redoubt erupted violently in 2009, after letting out a primal "scream."
Max Kaufman Alaska Volcano Observatory/University of Alaska Fairbanks Geophysical Institute

Most volcanoes rumble before they erupt, but Washington and Alaska researchers say a big recent eruption was preceded not by a rumble, but a scream.

Alaska’s Mount Redoubt blew its top several times in 2009. Leading up to many of the explosions were a series of little earthquakes—not uncommon for an active volcano. But these quakes began to accelerate, one after another, like a drumbeat building to a climax.

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Earthquakes
10:58 am
Thu September 27, 2012

New warning system could alert you seconds before quake hits

A pilot project shows what the quake warnings might look like.
U. S. Geological Survey

What would you do if you knew a major earthquake was about to strike in 10 seconds? Some scientists say even a few moments’ warning could save lives, and they’re setting up a system that might soon give Washingtonians time to act before the shaking starts.

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seismic surveys
2:40 pm
Fri June 15, 2012

Endangered orcas cause delays for major earthquake research

The R/V Langseth uses sonar to study earthquake faults
Columbia University/Earth Institute

Updated 6/18/12, with comments and links from whale advocates.

An expensive science mission off the Washington and Oregon coasts has been scaled back, at least for now, out of concern for orca whales. A research ship is using blasts of sound to create maps of a major earthquake fault, which is considered the greatest tsunami risk along the U.S. Pacific coast.

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