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Developed Countries, Earth Science, Geographic, Gravity, Plate Techtonics

A Giant Quake May Lurk Under Bangladesh and Beyond

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A huge earthquake may be building beneath Bangladesh, the most densely populated nation on earth. Scientists say they have new evidence of increasing strain there, where two tectonic plates underlie the world's largest river delta. They estimate that at least 140 million people in the region could be affected if the boundary ruptures; the destruction could come not only from the direct results of shaking, but changes in the courses of great rivers, and in the level of land already perilously close to sea level.

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Earth Science, Geology, soil, Geophysics, Plate Techtonics, Gravity

New Analysis Reveals Large-Scale Motion Around San Andreas Fault System

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An array of GPS instruments near the San Andreas Fault System in Southern California detects constant motion of Earth's crust--sometimes large, sudden motion during an earthquake and often subtle, creeping motion. By carefully analyzing the data recorded by the EarthScope Plate Boundary Observatory's GPS array researchers from the University of Hawai'i at Mānoa (UHM), University of Washington and Scripps Institution of Oceanography (SIO) discovered nearly 125 mile-wide "lobes" of uplift and subsidence--a few millimeters of motion each year--straddling the fault system. This large scale motion was previously predicted in models but until now had not been documented.

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Earth Science, Geology, Earthquake, Plate tectonic, Geographic

University of Montana Researcher Helps Break Ground on Forecasting Earthquakes

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MISSOULA, Montana - A University of Montana researcher is part of a team whose research is breaking ground on the complexity of earthquakes and the possibility to forecast them. The journal Nature Geoscience features their research online at http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2734.html.

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Tsunamis, Earthquake, Seismology, Sensor, Seafloor, mathematical model, Jan Dettmer, Australian National University, 171st Meeting of the Acoustical Society of America (ASA)

A Warning System for Tsunamis

Scientists at the Australian National University have developed the Time Reverse Imaging Method to take real-time data from the ocean sensors and use that information to recreate what the tsunami looked like when it was born. Once scientists have the tsunami source pinpointed, they can use it to make better predictions about what will happen once the waves reach shore. This new method is fast enough to compete with existing algorithms but much more accurate.

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New Study Finds Major Earthquake Threat From the Riasi Fault in the Himalayas

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New geologic mapping in the Himalayan mountains of Kashmir between Pakistan and India suggests that the region is ripe for a major earthquake that could endanger the lives of as many as a million people.

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Pesky Squeaks and Squeals Caused by 3 Types of 'Stick-Slip' Behavior

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Researchers have uncovered key features of the dynamics of a form of jerky motion responsible for phenomena as diverse as squeaks and squeals in door hinges and automotive brakes, joint wear in the human body and the sudden shifting of tectonic plates leading to earthquakes.

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Bridge, Repair, Carbon Fiber, Concrete, Earthquake

Speedy Bridge Repair

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A team of researchers led by University of Utah civil and environmental engineering professor Chris Pantelides has developed a new process of fixing damaged bridge columns that takes as little as a few days.

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accelerated bridge construction, Concrete, Bridge, Earthquake, fiber-reinforced polymer composite, Rehabilitation, Repair, concrete repair, Seismic, Strengthening

Rapid Repair of Severely Damaged Concrete Columns After an Earthquake

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Repair of damaged bridge columns following an earthquake is a good alternative to replacement. New repair method shows benefits include cost savings, reduction in construction time, and decreased interruption of emergency services.

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Earthquake, Faults, Rainwater, Tectonic Plates

It’s the Rain’s Fault

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Rainwater may play an important role in the process that triggers earthquakes, according to new research.

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Geotechnical Engineer Studying Effects of Earthquake in Ecuador; Wood Chosen to Participate in NSF-Sponsored Reconnaissance Mission.

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