Tuesday, May 11, 2021
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Glaciers such as the Yakutat in Southeast Alaska, shown here, have been melting since the end of the Little Ice Age, influencing earthquakes in the region. Credit: Sam Herreid
Earthquake

Melting glaciers contribute to Alaska earthquakes

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The Cinders lava flow Utah
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Unusual earthquakes highlight central Utah volcanoes

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Using a method to better locate the source of weak tremors from regions with complex geological features, researchers found that many tremors originate from the shear zone, an area of high fluid pressure, in the Nankai Trough, which is schematically shown here with structures of tectonic plates and fault lines.
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Making sense of commotion under the ocean to locate tremors near...

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Matthew Siegfried inspects a GPS device, powered by a solar panel at Whillans Ice Plain. Credit: Grace Barcheck/Cornell University
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Slow motion precursors give earthquakes the fast slip

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Map of the Cascadia subduction zone. Credit: Public Domain
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Deep, slow-slip action may direct largest earthquakes and their tsunamis

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Overview of the study area and the schematic illustration of interaction of fault motion and the seafloor subsidence. Credit: University of Tsukuba
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New model reveals previously unrecognized complexity of oceanic earthquake zones

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The outcrop of the pseudotachylyte-bearing fault zone in pelagic sedimentary rocks.
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New fault zone measurements could help us to understand subduction earthquakes

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Soldiers remove bricks from the road after earthquake in Rongxian county on 25 February 2019. | Credit: IC
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Unusually shallow earthquake ruptures in Chinese fracking field

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The 'slow earthquakes' that we cannot feel may help protect against the devastating ones
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How earthquake swarms arise

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Seismogram
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Superheated rocks deep underground help explain earthquake patterns

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San Andreas Fault
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Deep underground forces explain quakes on San Andreas Fault

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Surface displacement mapped using InSAR satellite imaging data. Along the fault, the ground was either raised (southeast) or collapsed (northwest). The star designates the epicentre. Credit: Jean-François RITZ et al
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The Le Teil earthquake provides new insights on seismic risk in...

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seismogram
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Machine learning unearths signature of slow-slip quake origins in seismic data

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The Romanche fracture zone
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Rare ‘boomerang’ earthquake observed along Atlantic Ocean fault line

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Fracking
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What factors influence the likelihood of fracking-related seismicity in Oklahoma?

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268 seismometers (red) in 117 countries detected a drop on seismic noise. “Global quieting of high-frequency seismic noise due to COVID-19 pandemic lockdown measures” by Thomas Lecocq et al., published Thursday 23 July 2020 in Science Credits:Photo of seismometer: Stephen Hicks/Imperial College London
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COVID-19 lockdown caused 50 percent global reduction in human-linked Earth vibrations

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False color satellite image of the Taimali catchment area in southeastern Taiwan in August 2009 after typhoon Morakot. Red: vegetated surface, grey: barren surface (Image: LANDSAT-7 / NASA, JPL).
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Typhoon changed earthquake patterns

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Earthquake

How water in the deep Earth triggers earthquakes and tsunamis

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Illustration of the natural fluid injection process that triggered the Cahuilla swarm.
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Natural fluid injections triggered Cahuilla earthquake swarm

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Subduction zones occur where one tectonic plate dives under another. New computer modeling by Magali Billen, professor of earth and planetary sciences at UC Davis, shows why earthquakes on these sinking plates cluster at certain depths and could give insight into processes deep in the Earth. (U.S. Geological Survey)
Earthquake

New clues to deep earthquake mystery

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