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Latest Earthscope Stories

2012-08-03 01:17:03

Changes in seismic velocity--changes in the speeds at which seismic waves move through the Earth's crust--have been identified during and after many earthquakes. But do these changes also happen before an earthquake, and could they be measured as a way to predict a quake on the way? The search for a clear and measurable pre-quake signal has been called "the holy grail of seismology." In a new analysis of the 2004 magnitude 6.0 Parkfield earthquake in California, David Schaff suggests some...

GPS And Space-based Radar Help Calculate Sierra Nevada’s Age, Growth
2012-05-07 10:29:51

Researchers studying the highest mountain range in the continental United States have been able to detect the rate at which it is growing and perhaps how old the mountains that are found there using new technology from space. The team of researchers from University of Nevada´s Geodetic Laboratory in Reno and University of Glasgow in the UK, said the Sierra Nevada mountains are steadily growing at the rate of about 1 inch every two decades across the entire 400-mile-long range on the...

GPS Monitoring System For Big US Earthquakes To Undergo Testing
2012-04-25 04:36:04

The space-based technology that lets GPS-equipped motorists constantly update their precise location will undergo a major test of its ability to rapidly pinpoint the location and magnitude of strong earthquakes across the western United States. Results from the new Real-time Earthquake Analysis for Disaster (READI) Mitigation Network soon could be used to assist prompt disaster response and more accurate tsunami warnings. The new research network builds on decades of technology development...

Image 1 - First EarthScope 'Transportable Array' Seismic Station Reaches US East Coast
2012-02-18 04:35:13

Data generate 3-D 'CT scan' of North American continent's interior Yulee, Florida. Not a place one usually thinks of as an Earthquake Epicenter. But this swampland not far from the Georgia state line is now home to a state-of-the-art seismic station known as 457A. Here, within a few miles of the Atlantic Ocean, 457A has been installed to record ground motion from earthquakes. Earthquakes do happen on the East Coast of the United States, as the Virginia quake of August, 2011 attests....

Southern California's Tectonic Plates Revealed In Detail
2011-10-07 03:52:56

Rifting is one of the fundamental geological forces that have shaped our planet. Were it not for the stretching of continents and the oceans that filled those newly created basins, Earth would be a far different place. Yet because rifting involves areas deep below the Earth's surface, scientists have been unable to understand fully how it occurs. What is known is that with rifting, the center of the action lies in the lithosphere, which makes up the tectonic plates and includes the crust...

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2011-05-10 09:38:23

Primary coordination point for EarthScope science, education and outreach activities The National Science Foundation (NSF) has awarded $2.4 million to Arizona State University (ASU) to serve as the next host for the EarthScope National Office. The national office fosters and supports integrated science, education and outreach, and related activities for EarthScope scientists. EarthScope is an NSF-funded Earth science program that explores the four-dimensional structure of the North American...

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2011-04-17 07:36:36

For many people, Global Positioning System (GPS) satellite technology is little more than a high-tech version of a traditional paper map. Used in automobile navigation systems and smart phones, GPS helps folks find their way around a new neighborhood or locate a nearby restaurant. But GPS is doing much, much more for researchers at the California Institute of Technology (Caltech): it's helping them find their way to a more complete understanding of Earth's interior structure. Up until now,...

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2011-04-11 09:34:52

Conductivity image hints volcano plume is bigger than thought University of Utah geophysicists made the first large-scale picture of the electrical conductivity of the gigantic underground plume of hot and partly molten rock that feeds the Yellowstone supervolcano. The image suggests the plume is even bigger than it appears in earlier images made with earthquake waves. "It's like comparing ultrasound and MRI in the human body; they are different imaging technologies," says geophysics...

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2011-04-01 15:20:01

First such station installed northwest of Columbia, Mississippi Most seismic activity--and earthquakes--have been in the U.S. West. But the East is not out of the woods in terms of risk, geologists say. After a six-year march eastward from the U.S. West Coast, the EarthScope Transportable Array seismic network has reached a major milestone: installation of the first Transportable Array station east of the Mississippi River. Station 345A, located on a private farm about 15 miles northwest of...


Word of the Day
caparison
  • A cloth or covering, more or less ornamented, laid over the saddle or furniture of a horse, especially of a sumpter-horse or horse of state.
  • Clothing, especially sumptuous clothing; equipment; outfit.
  • To cover with a caparison, as a horse.
  • To dress sumptuously; adorn with rich dress.
This word ultimately comes from the Medieval Latin 'cappa,' cloak.
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