Saturday, February 22, 2020
Earthquake

Earthquake

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Seismogram
Earthquake

Analyzing seismic patterns to forecast the magnitude of the largest earthquake...

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Kilauea
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California is famous for earthquakes, wildfires and Volcanoes

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Researchers employed 20 kilometers (pink) of a 51-kilometer undersea fiber-optic cable, normally used to communicate with an off-shore science node (MARS, Monterey Accelerated Research System), as a seismic array to study the fault zones under Monterey Bay.
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Underwater telecom cables make superb seismic network

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The shallow water buoy can detect small movements and changes in the Earth's seafloor that are often a precursor to deadly natural hazards, like earthquakes, volcanoes and tsunamis. Credit: University of South Florida
Earthquake

New technology developed to improve forecasting of Earthquakes, Tsunamis

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The excavation of trench B at the Leigh Lake site. Shown in the photo (from left to right) are Glenn Thackray, Cooper Brossy, and Darren Zellman. Credit: Mark Zellman
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Evidence of two quakes extends rupture history in Grand Tetons National...

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This simplified hydrology model shows the subsurface of Oklahoma. The Arbuckle Group is the area where most wastewater is injected. This layer allows fluid to move easily to distant areas. The added water causes stress as it travels and can cause earthquakes when it encounters pre-existing faults. Credit: University of Oklahoma
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Geoscientists hope to make induced earthquakes predictable

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Earthquake

Earthquake impact can be affected by seasonal factors, historical study shows

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Earthquake

Studying the snowmelt episodes of a Pyrenean river with a seismometer

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earthquake in Southern California
Earthquake

Distinguishing earthquake foreshocks and aftershocks

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Visualization of the modelled coupled earthquake and tsunami across Palu Bay, from Ulrich et al., 2019: Left: Seismic waves being generated while the earthquake propagates southward in a ‘superfast’ manner. Warm colours denote higher movements across the geological faults and higher ground shaking (snapshot after 15 seconds of earthquake simulation time). Right: The movements of the earthquake beneath the bathtub shaped Palu Bay generate a ‘surprise’ tsunami (snapshot of the water waves aftee 20s of simulation time of the tsunami scenario). Image credit: LMU.
Earthquake

Role of earthquake motions in triggering a ‘surprise’ tsunami

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Hydraulic fracturing (Creative Commons photo)
Earthquake

Understanding the link between fracking and earthquakes

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Map of seismic sensors (green triangles) around the epicenter (red star) of one of the earthquakes near the city of Tsukuba, Ibaraki Prefecture. Credit: 2019 Satoshi Ide
Earthquake

Earthquake study casts doubt on early warnings but hints at improved...

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A picture of Mt. Aso, including locations of eastern and western clusters. Credit: Aso Geopark Promotion Council
Earthquake

Underground links between quakes and eruptions of Japan’s biggest active volcano

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Jesse leaning against the fresh fault scarp of the Kekerengu fault, next to some of the curved slickenlines. Credit: Professor Tim Little
Earthquake

Rock scratches hint at future quakes

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Marine Denolle (right) and her team, including Jiuxun Yin (left) and Brad Lipovsky, created numerical models to predict an earthquake’s final magnitude 10 to 15 seconds faster than today’s best algorithms. Credit: Stephanie Mitchell/Harvard Staff Photographer
Earthquake

Predicting the strength of earthquakes

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Wells drilled into Oklahoma's Arbuckle formation inject wastewater (1) which then disperses through the rock. As it spreads, the wastewater can trigger earthquakes in fault zones (2), but their size depends on the amount injected and the rock's properties. The new model can predict quake probabilities by the quantity of wastewater injected.
Earthquake

Predicting earthquake hazards from wastewater injection

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Earthquakes run in packs, but you can hear them coming, as noted in research from Los Alamos National Laboratory and California Institute of Technology.
Earthquake

Faint foreshocks foretell California quakes

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Aerial view of the hydraulic fracturing rig at Cuadrilla’s Preston New Road site. Credit: Matthew Hampson, Cuadrilla Resources Ltd
Earthquake

Predicting seismic activity at fracking sites to prevent earthquakes

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U of T's Jeremy Rimando sets up Differential Global Positioning System (DGPS) survey equipment to measure the amount of displacement on the Las Chacras Fault in San Juan, Argentina.
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Research could protect cities in active earthquake zones

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Along the North Anatolian Fault, Anatolia and the Eurasian Earth Plate push past each other. Image reproduced from the GEBCO world map 2014, www.gebco.net
Earthquake

Istanbul: Seafloor study proves earthquake risk for the first time

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