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All Articles Tagged As: seismic instruments
 | Technology to detect nuclear explosions now will be pioneered to monitor active volcanoes in the Northern Mariana Islands, a US commonwealth near Guam. The U.S. Geological Survey has named Southern Methodist University in Dallas as prime cooperator on the two-year project. In addition to conventional seismic and GPS monitoring, infrasound will be deployed to "listen" for eruptions. Guam soon will be the primary base for forward deployment of U.S. military forces in the Western Pacific. ...> Full Article |
Seismologists have found a new way to piece together the history of hurricanes in the North Atlantic -- by looking back through records of the planet's seismic noise. It's an entirely new way to tap into the rich trove of seismic records, and the strategy might help establish a link between global warming and the frequency or intensity of hurricanes.
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 | Utah scientists develop new approach to mine disasters ...> Full Article |
Earthquake monitoring stations are almost always on land, but what about the 70 percent of the Earth's surface under water? California's first permanent seafloor seismic station has now been linked real-time into the Northern California seismic network, allowing scientists to get a more complete picture of the state's fault system -- especially the San Andreas Fault, which runs along the coast. The seafloor seismometer, built by UC Berkeley, was placed on the ocean bottom by MBARI.
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Flying twin-engine light aircraft the equivalent of several trips around the globe and establishing a network of seismic instruments across an area the size of Texas, a US-led, international team of scientists has not only verified the existence of a mountain range that is suspected to have caused the massive East Antarctic Ice Sheet to form, but also has created a detailed picture of the rugged landscape buried under more than four kilometers (2.5 miles) of ice.
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 | Inside your laptop is a small accelerometer chip, there to protect the delicate moving parts of your hard disk from sudden jolts.It turns out that the same chip is a pretty good earthquake sensor, too -- especially if the signals from lots of them are compared, in order to filter out more mundane sources of laptop vibrations, such as typing. ...> Full Article |
Seismic airguns during geophysical exploration for oil and gas - seem to have minimal effect on endangered sperm whales
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Researchers have devised a technology that can distinguish mine collapses from other seismic activity.
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 | New early warning system being installed in Indonesia ...> Full Article |
 | International expedition discovers gigantic volcanic eruption in the Arctic Ocean ...> Full Article |
ata from faint earth tremors caused by wind-driven ocean waves-often dismissed as "background noise" at seismographic stations around the world-suggest extreme ocean storms have become more frequent over the past three decades
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Network of computers senses earthquake and sends warning, potentially saving lives
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The surprise discovery of university-owned rights to oil and natural gas in southern Alberta is leading to first-hand lessons in the energy sector for students and researchers who have begun exploring the potential of the reserves using some of the latest technology in exploration geology.
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 | Princeton Earth scientist Frederik Simons believes the answers to questions about such unpredictable and destructive acts of nature as earthquakes and volcanoes might best be found floating in the ocean. ...> Full Article |
 | Since we can't sample the deepest regions of the Earth, scientists watch the velocity of seismic waves as they travel through the planet to determine the composition and density of that material. Now a new study suggests that material in part of the lower mantle has unusual electronic characteristics that make sound propagate more slowly, suggesting that the material there is softer than previously thought. The results call into question the traditional techniques for understanding this region of the planet. The authors, including Alexander Goncharov from the Carnegie Institution's Geophysical Laboratory, present their results in the January 25, 2008, issue of Science. ...> Full Article |
 | The most detailed three-dimensional seismic images yet of the Chicxulub crater, a mostly submerged and buried impact crater on the Mexico coast, may modify a theory explaining the extinction of 70 percent of life on Earth 65 million years ago. ...> Full Article |
 | Participants in a summer course for educators used ground-penetrating radar (GPR) to locate a pair of lost graves at an abandoned cemetery outside Houston. The site might become a historical monument. ...> Full Article |
 | A four-man science team led by British Antarctic Survey's (BAS) Dr Andy Smith has begun exploring an ancient lake hidden deep beneath Antarctica's ice sheet. The lake -- the size of Lake Windermere (UK) -- could yield vital clues to life on Earth, climate change and future sea-level rise. ...> Full Article |
Using a novel device that simulates earthquakes in a laboratory setting, a team of researchers have shown that seismic waves - the sounds radiated from earthquakes - can induce earthquake aftershocks, often long after a quake has subsided.
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Like geological ninjas, earthquakes can strike without warning. But there may be a way to detect the footfalls of large earthquakes before they strike, alerting their potential victims a week or more in advance. A Stanford professor thinks a method to provide just such warnings may have been buried in the scientific literature for over 40 years.
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 | The first effort to drill into an undersea zone where massive earthquakes and tsunamis are generated has yielded new data on the stresses that build up there, according to Casey Moore, a professor of Earth and planetary sciences at the University of California, Santa Cruz. ...> Full Article |
 | A California earthquake early warning system now being tested accurately predicted the ground shaking in San Francisco a few seconds before the city felt the Oct. 30, 2007, magnitude 5.4 quake near San Jose, according to a statewide team of seismologists. ...> Full Article |
Lab experiments that mimic the way the ground moves during destructive earthquakes require some sophisticated equipment, and they yield valuable insights. Caltech scientists studying how sliding motion spreads along a fault interface conducted a series of experiments involving ultrafast digital cameras and high-speed laser velocimeters to replicate a range of realistic fault conditions.
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Researchers from UQ's Earth Systems Science Computational Centre (ESSCC) who were able to predict a series of three large Sumatran earthquakes that occurred in September, will present their ground-breaking research at the Fall Meeting of the American Geophysical Union (AGU), held from December 10 to 14.
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 | A team of seismologists from Washington University in St. Louis, like members of the starship Enterprise, will "boldly go where no man has gone before" after Thanksgiving this year. ...> Full Article |
 | The first phase of the new NEPTUNE Canada ocean observatory is being completed today off the west coast of Vancouver Island. ...> Full Article |
 | Scientists drill into earthquake zone 10,000-plus feet beneath Earth's surface ...> Full Article |
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