WAMU 88.5 : News

Filed Under:

Scientists Expand Seismic Grid Across U.S.

Play associated audio
This image provided by NASA shows a night time image photographed by the Expedition 29 crew from the International Space Station.
AP Photo/NASA
This image provided by NASA shows a night time image photographed by the Expedition 29 crew from the International Space Station.

USArray, a project funded by the National Science Foundation, will be extending a network of sensors in a grid across the entire East Coast, including Virginia, in an effort to better understand the Earth's surface and its geologic processes.

"You have the San Andreas Fault in California, and a major subduction zone off of Oregon and Washington," says Bob Woodward who runs the USArray project. "It's very clear the forces at play there."

He says it's been hundreds of millions of years since those kinds of forces were active on the East Coast, but that side of the country still gets earthquakes, such as the one in Virginia this summer that cracked the Washington Monument. He says the specific forces are poorly understood.

"With this array, we can image what's under the continent almost like a CAT scan," explains Woodward.

They'll be able to map out even small faults and better understand seismic risk.

WAMU 88.5

Customers Bid Farewell To One Of The D.C. Region's Last Video Stores

Longtime movie lovers say they'll miss the shop, but they'll especially mourn the gradual death of an American tradition.
NPR

Tabasco And Beer-Flavored: Not Your Easter Bunny's Jelly Beans

On the eve of Easter and National Jelly Bean Day, let us probe the mysterious origins and unexpected ascendency of the humble candy. And to celebrate, we've sampled Jelly Belly's newest flavors.
WAMU 88.5

Analysis: U.S. Capitol Renovations And The D.C. Council's Lawsuit Against Mayor Gray

Roll Call's David Hawkings joins Matt Bush to discuss the D.C. council's suit against Mayor Gray and the expensive process of rehabilitating the U.S. Capitol Dome.
WAMU 88.5

Free Public Wi-Fi Comes To NoMa

The NoMa Business Improvement District has started to provide free Wi-Fi in some parts of the neighborhood, but some users say the service is still too sluggish.

Leave a Comment

Help keep the conversation civil. Please refer to our Terms of Use and Code of Conduct before posting your comments.