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USGS - 2011 Oklahoma Human-Induced Earthquake May Have Triggered Larger Quake

Sun, 2014-03-09 21:50 — Kathy Gilbeaux

                                          

usgs.gov - March 6, 2014

PASADENA, Calif. — In a new study involving researchers at the U.S. Geological Survey, scientists observed that a human-induced magnitude 5.0 earthquake near Prague, Oklahoma in November 2011 may have triggered the larger M5.7 earthquake less than a day later. This research suggests that the M5.7 quake was the largest human-caused earthquake associated with wastewater injection.

"The observation that a human-induced earthquake can trigger a cascade of earthquakes, including a larger one, has important implications for reducing the seismic risk from wastewater injection," said USGS seismologist and coauthor of the study Elizabeth Cochran.

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CLICK HERE - STUDY - Observations of static Coulomb stress triggering of the November 2011 M5.7 Oklahoma earthquake sequence

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Researchers Link Earthquakes In Texas To Fracking Process

Fri, 2013-12-06 17:07 — Kathy Gilbeaux

      

CREDIT: SHUTTERSTOCK

thinkprogress.org - By Katie Valentine - December 6, 2013

Researchers at Southern Methodist University have linked a string of 2009 and 2010 earthquakes in Texas to the injection of fracking wastewater into the ground, according to a new study.

The researchers examined the group of more than 50 earthquakes that hit the area of Cleburne, Texas in 2009 and 2010, and found that they could have happened because of wastewater injection wells associated with fracking operations. Before 2008, the Fort Worth Basin of Texas had never experienced an earthquake.

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STUDY - Analysis of the Cleburne, Texas, Earthquake Sequence from June 2009 to June 2010

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Great Shakeout Earthquake Drills

Thu, 2013-09-26 17:50 — Kathy Gilbeaux

       

submitted by Katie Cook

shakeout.org

Many areas of the globe are prone to earthquakes. You could be anywhere when an earthquake strikes: at home, at work, at school or even on vacation. Are you prepared to survive and to recover quickly?

Great ShakeOut earthquake drills are an opportunity to practice how to be safer during earthquakes: "Drop, Cover and Hold On." ShakeOut also has been organized to encourage you, your community, your school, or your organization to update emergency plans and supplies, and to secure your space in order to prevent damage and injuries.

(CLICK HERE FOR ADDITIONAL INFORMATION)

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7 Ways the Response to a Devastating Earthquake Has Changed

Sat, 2013-09-21 23:30 — Maeryn Obley

A highway destroyed by the earthquake. Photo courtesy of Flickr/Joe Lewis

Image: A highway destroyed by the earthquake. Photo courtesy of Flickr/Joe Lewis

emergencymgmt.com - September 20th, 2013 - David Raths

Most San Francisco Bay Area residents over 30 years old remember exactly where they were at 5:04 p.m. on Oct. 17, 1989, when the magnitude 6.9 Loma Prieta earthquake shook the region.

I certainly do. I was just getting ready to drive home to Palo Alto, a few miles from the editorial offices of InfoWorld, a technology publication in Menlo Park, where I worked.

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Researchers Use GPS Data to Speed Up Tsunami Warnings

Sun, 2012-05-06 23:25 — Kathy Gilbeaux

      

In this Jan. 2, 2005 file photo, a wide area of destruction is shown from an aerial view taken over Meulaboh, 250 kilometers (156 Miles) west of Banda Aceh, Indonesia. Researchers in the United States are hoping to use GPS data to speed up current warnings. (AP Photo/Dita Alangkara, File)

U.S. seismologists currently testing new warning system

by Andrew Pinsent - CBC News - May 5, 2012

Scientists in the United States have been testing an advanced tsunami warning system using GPS data, combined with traditional seismology networks, to attempt to detect the magnitude of an earthquake faster so warnings of potential tsunamis can get out to potentially affected areas sooner.

The prototype is called California Integrated Seismic Network (CISN), and is a collaboration between the United States Geological Survey (USGS) and The Gordon and Betty Moore Foundation, whose focus is on environmental conservation.

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Transforming Earthquake Detection?

Sat, 2012-02-25 11:14 — Kathy Gilbeaux

submitted by Linton Wells

sciencemag.org - January 20, 2012

Earthquakes are a collective experience. Citizens have long participated in earthquake science through the reporting, collection, and analysis of individual experiences. The value of citizen-generated status reports was clear after the 1995 Kobe, Japan, earthquake (1). Today's communications infrastructure has taken citizen engagement to a new level: Earthquake-related Twitter messages can outrun the shaking (2), Internet traffic detects earthquakes (3–7) and maps the distribution of shaking in minutes (8–10), and accelerometers in consumer electronic devices record seismic waveforms (11–16). What are we learning from this flood of data, and what are the limitations? How do we harness these new capabilities for scientific discovery, and what is the role of education?

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Invisibility Cloak to Protect Buildings from Earthquakes

Sat, 2012-02-18 01:01 — Kathy Gilbeaux

submitted by Samuel Bendett and Linton Wells

Homeland Security News Wire - February 15, 2012

Scientists show that by cloaking components of structures with pressurized rubber, powerful waves such as those produced by an earthquake would not “see” the building — they would simply pass around the structure and thus prevent serious damage or destruction

University of Manchester mathematicians have developed the theory for a Harry Potter-style cloaking device which could protect buildings from earthquakes.

Dr. William Parnell’s team in the University’s School of Mathematics has been working on the theory of invisibility cloaks which, until recently, have been merely the subject of science fiction.

In recent times, however, scientists have been getting close to achieving cloaking in a variety of contexts. A University of Manchester release reports that the work from the team at Manchester focuses on the theory of cloaking devices which could eventually help to protect buildings and structures from vibrations and natural disasters such as earthquakes.

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New NRC Hazard Analysis Earthquake Study Released

Tue, 2012-01-31 23:32 — Kathy Gilbeaux

submitted by Kay Goss

                 

US NRC study released today on "New Seismic Model Will Refine Hazard Analysis at U.S. Nuclear Plants" and performs studies at many central and eastern U.S. susceptible locations. The Central and Eastern United States Seismic Source Characterization for Nuclear Facilities (CEUS SSC) Project was conducted from April 2008 to December 2011 to develop a new, regional seismic source model for use in conducting and reviewing probabilistic seismic hazard analyses (PSHAs) for nuclear facilities in the CEUS. PSHA is a method for assessing site-specific seismic hazard that includes getting the best estimate of ground motions and a transparent quantitative accounting of uncertainty. The results of PSHA are used in seismic design and in calculating seismic risk. 

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Ohio Quake Linked to Wastewater Well

Tue, 2012-01-03 21:35 — Kathy Gilbeaux

by Dan Vergano, USA Today - January 3, 2012

      

This photo made Jan. 2, 2012 shows the site of a brine injection well owned by Northstar Disposal Services LLC in Youngstown, Ohio. The company has halted operations at the well, which disposes of brine used in gas and oil drilling, after a series of small earthquakes in the Youngstown area. Photo: Dan Pompili, Warren Tribune-Chronicle / AP

Ohio earthquakes tied to a deep wastewater disposal well are raising safety questions, amid a nationwide natural gas drilling boom.

On New Year's Eve, a magnitude-4.0 quake outside Youngstown, Ohio, shook the ground as far north as Toronto. Earthquake experts tied the event, the latest and largest in a series stretching back to March, to a 1.7-mile-deep wastewater disposal well, prompting state officials to shut it down.

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Video - Does Fracking Cause Earthquakes?

Tue, 2011-11-08 23:54 — Kathy Gilbeaux
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