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As Hazard Warnings Increase, Experts Urge Better Decisions on Who and When to Warn

Effective warnings are a growing need as expanding global populations confront a wide range of hazards, such as a hurricane, wildfire, toxic chemical spill or any other environmental hazard threatens safety.

Science

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Infrastructure Resiliency, Environmental Engineering, Civil Engineering, earthquake engineering, Earthquake

Video: Earthquake-Resilient Pipeline Could Shake Up Future for Aging Infrastructure on West Coast

A top engineer from the city of Los Angeles visited Cornell University this month as researchers tested a new earthquake-resilient pipeline designed to better protect southern California’s water utility network from natural disasters. The test mimicked a fault rupture that can occur during an earthquake when global plates begin to slip past each other, causing the ground to shift and deform.

Science

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Earthquake, San Andreas Fault, Geology

Tide-Triggered Tremors Give Clues for Earthquake Prediction

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The triggering of small, deep earthquakes along California’s San Andreas Fault reveals depth-dependent frictional behavior that may provide insight into patterns signaling when a major quake could be on the horizon, according to a paper released this week by the Proceedings of the National Academy of Sciences (PNAS).

Science

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Earth Science, Geography, Geology & soil, Plate Techtonics

The Pains and Strains of a Continental Breakup

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Every now and then in Earth's history, a pair of continents draws close enough to form one. There comes a time, however, when they must inevitably part ways.

Science

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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.

Science

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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.

Science

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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.

Science

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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.

Science

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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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