Saturday, July 4, 2020
Earthquake

Earthquake

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New study finds connection between fault roughness and the magnitude of...

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The ash plume from the Kilauea volcano on the big island of Hawaii was pictured May 12, 2018, from the International Space Station. Credit: NASA
Earthquake

New NASA radar looks to monitor volcanoes and earthquakes from space

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A seismogram of 2011 Tōhoku earthquake and tsunami recorded at Weston Observatory in Massachusetts, USA. Credit: Image from Wikimedia Commons.
Earthquake

Sediments may control location, magnitude of megaquakes

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The grey line in the rock, running from the foreground away under the boulder towards the mountains, is one of the shear zones from the study area. Credit: Lucy Campbell
Earthquake

‘Fossil earthquakes’ offer new insight into seismic activity deep below Earth’s...

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Japan's risk of giant tsunamis may have grown when the angle of a down-going slab of ocean crust declined. Top: ocean crust (right) slides under continental crust at a steep angle, causing faulting (red lines) in seafloor sediments piled up behind. Bottom: as the angle shallows, stress is transferred to sediments piled onto the continental crust, and faults develop there. Blue dots indicate resulting earthquakes. At left in both images, the change in angle also shifts the region where magma fueling volcanoes is generated, pushing eruptions further inland. Credit: Adapted from Oryan and Buck, Nature Geoscience 2020
Earthquake

Shifts in deep geologic structure may have magnified great 2011 Japan...

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The SHIRE project, which contributed resources to this research, is investigating seamounts within the Hikurangi Trench, to learn how they generate or dampen earthquakes at different stages of subduction. This seismic image shows a seamount known as Puke Seamount, colliding with New Zealand. Image: SHIRE/Andrew Gase.
Earthquake

Sinking sea mountains make and muffle earthquakes

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Research suggest that rocks colliding inside fault zones, like this one in Maine, may contribute to damaging high-frequency earthquake vibrations. Credit: Julia Carr
Earthquake

Researchers develop new explanation for destructive earthquake vibrations

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Scientists used the model to calculate seismic risk in the L.A. Basin
Earthquake

Source of Indonesian earthquakes and tsunamis located

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Core samples from the fault zone of the Japan Trench were recovered by the JFAST project and analyzed for evidence of past large earthquakes.
Earthquake

Seismic biomarkers in Japan Trench fault zone reveal history of large...

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A map of Vancouver Island showing the locations of seismic instruments considered by the research group. The grey shaded region delineates where slow earthquakes occur.
Earthquake

Researchers find evidence to explain behavior of slow earthquakes

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Fault zone with broken rock inside stippled lines and faulting directions of each rock segment outlined by half arrows. Photo credit: Henrik Drake. Illustration: Mikael Tillberg.
Earthquake

A new method for dating ancient earthquakes

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seismogram
Earthquake

Magnitude of Great Lisbon Earthquake may have been lower than previous...

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Unlike regular earthquakes, which can cause visible damage, slow earthquakes cannot be felt at the Earth's surface. Credit: Pixabay/ marcellomigliosi1956, licensed under pixabay license
Earthquake

The ‘slow earthquakes’ that we cannot feel may help protect against...

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Seismogram
Earthquake

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

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Kilauea
Earthquake

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.
Earthquake

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
Earthquake

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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