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A ruptured fault in Searles Valley, California, after the 2019 Ridgecrest earthquakes. A study of earthquakes led by The University of Texas at Austin found that seismic shockwaves are shaped by jagged faults and the debris wedged between them. Credit: Ben Brooks/USGS

Seismic shockwave pattern may be redirecting earthquake damage

Geology Page - November 26, 2021

Jessica Pilarczyk (SFU) and collaborator Tina Dura (Virginia Tech) sample sediment cores from rice paddies of the Greater Tokyo Region that contain evidence for an earthquake from 1,000 years ago that potentially originated from a historically unconsidered earthquake source. Credit: SFU

Researchers identify new source for earthquakes and tsunamis in the Greater Tokyo Region

In the time between mega-earthquakes, smaller earthquakes continuously occur between oceanic and continental plates (background earthquakes). Where a lot of energy is released through these earthquakes, we observe coastal mountains that rise faster. In contrast, slow-uplifting coastal areas coincide with fewer background earthquakes. Credit: University of Tübingen

Continuous activity of small earthquakes makes mountains grow

Chunks of exotic green rocks from the mantle erupted from the San Carlos Volcanic Field, Arizona. Credit: James St John

Rock crystals from the deep give microscopic clues to earthquake ground movements

Researchers also want to encourage the locals to develop practical evacuation plans to help them feel less pessimistic about their survival odds. Credit: Katsushika Hokusai

Previously unrecognized tsunami hazard identified in coastal cities

Seismogram

Earthquake, tsunami hazards from subduction zones might be higher than current...

Geology Page - May 7, 2021

$Local impacts from fracking the Eagle Ford$

Local impacts from fracking the Eagle Ford

Geology Page - May 7, 2021

Experimental setup for 3D seismic model.

3D printed models provide clearer understanding of ground motion

Geology Page - April 24, 2021

Seismogram

Study reveals the workings of nature’s own earthquake blocker

Geology Page - April 19, 2021

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

Melting glaciers contribute to Alaska earthquakes

Geology Page - March 19, 2021

The Cinders lava flow Utah

Unusual earthquakes highlight central Utah volcanoes

Geology Page - March 9, 2021

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.

Making sense of commotion under the ocean to locate tremors near...

Geology Page - March 9, 2021

Matthew Siegfried inspects a GPS device, powered by a solar panel at Whillans Ice Plain. Credit: Grace Barcheck/Cornell University

Slow motion precursors give earthquakes the fast slip

Geology Page - February 17, 2021

Map of the Cascadia subduction zone. Credit: Public Domain

Deep, slow-slip action may direct largest earthquakes and their tsunamis

Geology Page - January 12, 2021

Overview of the study area and the schematic illustration of interaction of fault motion and the seafloor subsidence. Credit: University of Tsukuba

New model reveals previously unrecognized complexity of oceanic earthquake zones

Geology Page - January 12, 2021

The outcrop of the pseudotachylyte-bearing fault zone in pelagic sedimentary rocks.

New fault zone measurements could help us to understand subduction earthquakes

Geology Page - November 4, 2020

$Unusually shallow earthquake ruptures in Chinese fracking field$

Unusually shallow earthquake ruptures in Chinese fracking field

Geology Page - October 9, 2020

The 'slow earthquakes' that we cannot feel may help protect against the devastating ones

How earthquake swarms arise

Geology Page - September 26, 2020

Seismogram

Superheated rocks deep underground help explain earthquake patterns

Geology Page - September 12, 2020

San Andreas Fault

Deep underground forces explain quakes on San Andreas Fault

Geology Page - September 9, 2020

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

The Le Teil earthquake provides new insights on seismic risk in...

Geology Page - September 1, 2020

seismogram

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

Geology Page - August 20, 2020

$The Romanche fracture zone$

Rare ‘boomerang’ earthquake observed along Atlantic Ocean fault line

Geology Page - August 16, 2020

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

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

Geology Page - July 25, 2020

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

COVID-19 lockdown caused 50 percent global reduction in human-linked Earth vibrations

Geology Page - July 25, 2020

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