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A magnitude 8.2 earthquake was “hidden” within a magnitude 7.5 earthquake in 2021, sending a mysterious tsunami around the world, according to a new study in Geophysical Research Letters. Credit: Zhe Jia and AGU

Hidden magnitude-8.2 earthquake source of mysterious 2021 global tsunami

Geology Page - February 18, 2022

Traces of paleotsunami at the lowland of the Ube River, Noda Village. The Sanriku Coast has been hit by tsunamis throughout its history, leaving behind tsunami deposits. Credit: Tohoku University

New analysis of tsunami deposits paints a clearer picture of Sanriku’s past

The aftermath of a 2010 tsunami in Chile, which was analyzed in a new study in JGR Solid Earth. Earlier warnings made possible by the study of tsunami-generated magnetic fields could better prepare coastal areas for impending disasters. Credit: International Federation of Red Cross and Red Crescent Societies

Tsunamis’ magnetic fields are detectable before sea level change

On September 29, 2009, a tsunami caused substantial damage and loss of life in American Samoa, Samoa, and Tonga. The tsunami was generated by a large earthquake in the Southern Pacific Ocean. Credit: NOAA

Earthquake depth impacts potential tsunami threat

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

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

Geology Page - May 7, 2021

Seismogram

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

Geology Page - May 7, 2021

An overview of tsunami prediction with AI Credit: Tohoku University, University of Tokyo, and Fujitsu Laboratories

Fujitsu leverages world’s fastest supercomputer and AI to predict tsunami flooding

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

The figure shows a portion of the Mafia mega-slide imaged by a time-slice extracted from 3-D seismic reflection data (coherence attribute). Credit: Data courtesy of Royal Dutch Shell

Evidence from one of Earth’s biggest underwater landslides ever sheds light...

Geology Page - November 20, 2020

How water in the deep Earth triggers earthquakes and tsunamis

Geology Page - June 27, 2020

Credit: Geological Society

New tsunami risk identified in Indonesia

Geology Page - April 25, 2020

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

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

Geology Page - March 17, 2020

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

Source of Indonesian earthquakes and tsunamis located

Geology Page - March 8, 2020

Anak Krakatoa eruption

Tsunami unleashed by Anak Krakatoa eruption was at least 100m high

Geology Page - November 28, 2019

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

New technology developed to improve forecasting of Earthquakes, Tsunamis

Geology Page - November 24, 2019

Klaus Reicherter from the University of Aachen examines a boulder that the tsunami carried onto the cliffs. Credit: Gösta Hoffmann/Uni Bonn

Oman tsunami : Huge tsunami hit Oman 1,000 years ago

Geology Page - November 19, 2019

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.

Role of earthquake motions in triggering a ‘surprise’ tsunami

Geology Page - September 7, 2019

Ancient Tsunamis: Deducing the scale of tsunamis from the ’roundness’ of...

Geology Page - August 25, 2019

The calving front of Bowdoin Glacier in northwestern Greenland, where icebergs are discharged and ice under the water melts.

Tsunami signals to measure glacier calving in Greenland

Geology Page - May 9, 2019

Image showing landslide failures around Orcas Island. The red line marks the newly discovered Skipjack fault zone. Credit: H. Gary Greene

Salish seafloor mapping identifies earthquake and tsunami risks

Geology Page - April 25, 2019

A recent study led by UMass Amherst looked at risk in southeast Japan after the devastating 2011 quake and tsunami.

Modeling future earthquake and tsunami risk in southeast Japan

Geology Page - April 2, 2018

An example of coastal boulder deposits on Inishmaan, Aran Islands. The cliffs are about 20 m high, and the boulders are piled 32-42 m inland from the cliff edge.

Storm waves can move boulders we thought only tsunamis had the...

Geology Page - March 1, 2018

The Cascadia Subduction Zone is capable of generating powerful earthquakes.

Seafloor sediments appear to enhance Earthquake and Tsunami danger in Pacific...

Geology Page - November 21, 2017

This is the cranium of a person who lived in what's now Papua New Guinea, 6,000 years ago.

6,000-year-old skull could be from the world’s earliest known tsunami victim

Geology Page - October 26, 2017

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