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20-year study yields precise model of tectonic-plate movements
A new model of the Earth, 20 years in the making, describes a dynamic three-dimensional puzzle of planetary proportions. Created by University of Wisconsin-Madison geophysicist Chuck DeMets and longtime collaborators Richard Gordon of Rice University and Donald Argus of NASA's Jet Propulsion Laboratory, the model offers a precise description of the relative movements of 25 interlocking tectonic plates that account for 97 percent of the Earth's surface. (2010-03-23)

Tectonics: Precision is hallmark of 20-year study
When it comes to 3-D puzzles, Rubik's Cube pales in comparison with the latest creation from geophysicists Richard Gordon, Chuck DeMets and Donald Argus. The trio has just put the finishing touches on a 20-year effort to precisely describe the relative movements of the interlocking tectonic plates that make up about 97 percent of Earth's surface. (2010-03-22)

Rensselaer geophysicist and team rush to Chile to study ongoing earthquake aftershocks
A team of geophysicists led by Rensselaer Polytechnic Institute Professor Steven Roecker is in Chile to study the scope and strength of aftershocks that continue to rattle the area following the massive Feb. 27 8.8-magnitude earthquake. The 10-member team, which was assembled quickly from universities around the United States, will be putting in place more than 50 broadband seismometers throughout the impacted area in Chile. (2010-03-18)

Catastrophic flooding may be more predictable after Penn researchers build a mini river delta
Researchers created a miniature river delta that replicates flooding patterns seen in natural rivers, resulting in a mathematical model capable of aiding in the prediction of the next catastrophic flood. (2010-03-16)

Earthquake observatory in Northern Chile to monitor the last seismic gap
After the quake of Concepción, the remaining gap in the north of Chile now holds potential for a comparable strong quake and is, thus, moving more and more into the focus of attention. (2010-03-15)

Texas earthquake study cites 'plausible cause'
A study published in the March issue of the Leading Edge examines series of small earthquakes occurring near the Dallas/Fort Worth International Airport between Oct. 30, 2008, and May 16, 2009. (2010-03-10)

Engineers deployed to Chile to study earthquake's impacts
UC Berkeley engineers are traveling to Chile to help coordinate US reconnaissance efforts to document the effects of the massive 8.8 magnitude earthquake that struck the region on Feb. 27. (2010-03-08)

All may look smooth, but there are 'bumps' along the way
Friction in human relations is all too obvious and prevalent, but friction in physics has had a (2010-03-07)

Emergency online communities
Online social networks could help with communications and recovery for people with disabilities following major natural disasters, or even terrorist attack, according to a research paper in the International Journal of Emergency Management. (2010-03-04)

Earth-shaking research to predict devastation from earthquakes
The computational science expertise at the Science and Technology Facilities Council's Daresbury Laboratory is playing a key role in enabling researchers at the National Autonomous University of Mexico, to develop a tool that will make it possible to estimate the likely impact of large magnitude earthquakes at specific locations, before they happen. (2010-03-03)

Chile quake occurred in zone of 'increased stress'
The massive, 8.8-magnitude earthquake that struck Chile Feb. 27 occurred in an offshore zone that was under increased stress caused by a 1960 quake of magnitude 9.5, according to geologist Jian Lin of the Woods Hole Oceanographic Institution. (2010-03-01)

Earthquake engineers release report on damage in Haiti
A UW engineer led a team of experts sent to Haiti to evaluate the impact of the magnitude-7 earthquake. The team's report to the US Geological Survey and the Earthquake Engineering Research Institute finds no surface evidence of the fault, but widespread damage caused by poor building practices. (2010-02-22)

Tracing natural hazards by taking Earth's pulse
Earthquakes and volcanic eruptions are caused by processes deep within the Earth. A project led by researchers of Ludwig-Maximilians-Universität in Munich and supported by a major grant from the EU will develop three-dimensional images of Earth's interior, thus improving our understanding and ability to forecast natural disasters. (2010-02-10)

Seismology highlights from BSSA February issue
A new study identifies earthquakes through July 2007 that have produced 100 of the strongest peak accelerations and 100 of the strongest peak velocities ever recorded. (2010-02-05)

Scientists return to Haiti to assess possibility of another major quake
A team funded by the National Science Foundation is returning to Haiti this week to investigate the cause of the Jan. 12, magnitude 7.0 earthquake there. (2010-01-26)

New earthquake information unearthed by San Andreas Fault studies
Recent studies of stream channel offsets along the San Andreas Fault reveal new information about fault behavior -- changing our understanding of the potential for damaging earthquakes. (2010-01-21)

San Andreas Fault study unearths new quake information
Recent collaborative studies of stream channel offsets along the San Andreas Fault by researchers at Arizona State University and UC Irvine reveal new information about fault behavior -- affecting how we understand the potential for damaging earthquakes. (2010-01-21)

The seismic gap south of Istanbul
The chain of earthquakes along the North Anatolian fault shows a gap south of Istanbul. The expected earthquakes in this region represent an extreme danger for the Turkish megacity. (2010-01-17)

First satellite map of Haiti earthquake
A major 7.0-magnitude earthquake struck the Haitian capital of Port-au-Prince on Jan. 12, causing major casualties and damage. The quake was followed by several aftershocks with magnitudes over 5.0. (2010-01-14)

Industry corruption, shoddy construction likely contributed to Haiti quake devastation
The death toll in the massive 7.0 magnitude earthquake in Haiti Jan. 12 is expected to continue to rise in the coming days, likely in large part because of corruption and resulting shoddy construction practices in the poor Caribbean nation, according to a University of Colorado at Boulder seismologist. (2010-01-14)

Sun and moon trigger deep tremors on San Andreas Fault
When the sun and moon are aligned with the San Andreas Fault they tug on it enough to increase the tremor rate deep underground, according to a new UC Berkeley study. While these tremors have not yet been linked to earthquakes, the tremors are associated with increased stress on the fault and may increase the risk of future quakes. The ease with which the deep rock slips indicates it is lubricated by high-pressure water. (2009-12-23)

Fault weaknesses, the center cannot hold for some geologic faults
Some geologic faults that appear strong and stable, slip and slide like weak faults. Now an international team of researchers has laboratory evidence showing why some faults that (2009-12-16)

Pre-eruption earthquakes offer clues to volcano forecasters
Like an angry dog, a volcano growls before it bites, shaking the ground and getting (2009-12-16)

Engineers help secure California highways and roads
Engineers investigated the seismic response of a semi-gravity reinforced concrete cantilever wall recently at the UC San Diego Englekirk Structural Engineering Center, which has the largest outdoor shake table in the United States. (2009-12-15)

Tremors between slip events: More evidence of great quake danger to Seattle
Scientists have discovered more small seismic tremor events lasting one to 70 hours that occur in somewhat regular patterns in a megathrust earthquake zone in Washington state and British Columbia. (2009-12-15)

New research uncovers deep origins of the 'Hawaiian hotspot'
Findings suggest the Hawaiian hotspot is the result of a lower-mantle plume. (2009-12-04)

New study cites lower rate of quakes along some subduction zones
As the relative speed of the plates around a fault increases, is there a corresponding increase in the number of earthquakes produced along the fault? According to this study published in the December issue of BSSA, the answer depends upon the type of tectonic boundary. On certain types of boundary, the efficiency of earthquake production actually depends on the fault slip rate. (2009-12-04)

Scientists map deep origins of the 'Hawaiian Hotspot'
Cecily Wolfe, a professor from the University of Hawai'i at Mānoa School of Ocean and Earth Science and Technology, and a multi-institutional team of scientists have put the theory to test. Their research findings, titled (2009-12-03)

Quake prediction model developed
The third in a series of Nature papers lays framework for new approach to earthquake prediction. Testing of new forecasting model is in progress: results are not expected for approximately another two years. (2009-12-03)

Small faults in southeast Spain reduce earthquake risk of larger ones
A team of Spanish scientists studying recent, active deformations in the Baetic mountain range have shown that the activity of smaller tectonic structures close to larger faults in the south east of the Iberian Peninsula partially offsets the risk of earthquakes. (2009-11-25)

Using new technique, scientists find 11 times more aftershocks for 2004 quake
Using a technique normally used for detecting weak tremor, scientists at the Georgia Institute of Technology discovered that the 2004 magnitude 6 earthquake along the Parkfield section of the San Andreas fault exhibited almost 11 times more aftershocks than previously thought. (2009-11-23)

Deep creep means milder, more frequent earthquakes along Southern California's San Jacinto fault
University of Miami study by Dr. Shimon Wdowinski in this week's Nature Geosciences demonstrates that deep creep may mean milder, more frequent earthquakes along SoCal's San Jacinto fault, making it a less likely candidate for a major earthquake than its neighbor to the east, the Southern San Andreas fault. (2009-11-08)

Earthquakes actually aftershocks of 19th century quakes
When small earthquakes shake the central US, citizens often fear the rumbles are signs a big earthquake is coming. Fortunately, a new Northwestern University study instead shows that most of these earthquakes are aftershocks of big earthquakes (magnitude 7) in the New Madrid seismic zone that struck the Midwest almost 200 years ago. Aftershocks go on until the fault recovers, which takes much longer in the middle of a continent. (2009-11-04)

African desert rift confirmed as new ocean in the making
In 2005, a gigantic, 35-mile-long rift broke open the desert ground in Ethiopia. At the time, some geologists believed the rift was the beginning of a new ocean as two parts of the African continent pulled apart, but the claim was controversial. Now, scientists from several countries have confirmed that the volcanic processes at work beneath the Ethiopian rift are nearly identical to those at the bottom of the world's oceans. (2009-11-02)

October seismology tipsheet
Highlights from October issue include a review article on strong ground motion; archaeoseismology: what can be gleaned from toppled columns; and further details on historical earthquakes along the Northern Anatolian Fault in Turkey. (2009-10-07)

UCLA center gets $4.5M in NSF funds for role in national earthquake simulation network
The NSF has awarded $105 million to Purdue University to spearhead a center that will serve as headquarters for the operations of the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES). UCLA will receive $4.5 million of this award to continue as one of NEES' large-scale, earthquake experimental resource sites. NEES@UCLA is among a network of fourteen large-scale, experimental sites across the country that specializes in field testing and monitoring of geotechnical and structural performance. (2009-10-07)

San Andreas affected by 2004 Sumatran quake
US seismologists have found evidence that the massive 2004 earthquake that triggered killer tsunamis throughout the Indian Ocean weakened at least a portion of California's famed San Andreas Fault. Researchers from Rice University, the Carnegie Institution of Washington and the University of California, Berkeley, published the findings this week in Nature. The study suggests the Earth's largest earthquakes can weaken the strength of fault zones worldwide and trigger periods of increased global seismic activity. (2009-09-30)

New way to monitor faults may help predict earthquakes
Scientists at the Carnegie Institution have found a way to monitor the strength of geologic faults deep in the Earth. This finding could prove to be a boon for earthquake prediction by pinpointing those faults that are likely to fail and produce earthquakes. Until now, scientists had no method for detecting changes in fault strength, which is not measurable at the Earth's surface. (2009-09-30)

First complete image created of Himalayan fault, subduction zone
An international team of researchers has created the most complete seismic image of the Earth's crust and upper mantle beneath the rugged Himalaya Mountains, in the process discovering some unusual geologic features that may explain how the region has evolved. (2009-09-11)

MU engineers develop safer, blast-resistant glass
To protect from potential terrorist attacks, federal buildings and other critical infrastructures are made with special windows that contain blast-resistant glass. However, the glass is thick and expensive. Currently, University of Missouri researchers are developing and testing a new type of blast-resistant glass that will be thinner, lighter and less vulnerable to small-scale explosions. (2009-09-10)

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