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Earthquakes that talk to each other

In four sample events (colored lines), the acceleration of peak ground displacement (measurements shown at right) just five seconds later suggests whether a megaquake, such as a magnitude 9 (red X) or a sub-7 magnitude quake is in progress. Real time monitoring, the researchers say, could enhance earthquake early warning.

Scientists find telling early moment that indicates a coming megaquake

Conventional geothermal resources have been generating commercial power for decades in places where heat and water from burble up through naturally permeable rock.

Solving geothermal energy’s earthquake problem

State Highway 287 slumped into Hebgen Lake; damage from the August 1959 Hebgen Lake (Montana-Yellowstone) earthquake.

Aftershocks of 1959 earthquake rocked Yellowstone in 2017-18

USGS map highlights earthquake risk zones. Blue boxes indicate areas of high activity of human-caused earthquake due to deep bore fluid injection.

Earthquakes are triggered well beyond fluid injection zones

Earthquake mangled track

Scientists take a ‘metamaterials’ approach to earthquake damage

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

Seismic activity

Scientists identify almost two million previously ‘hidden’ earthquakes

Tibetan Plateau

Folding faults and seismic risk in the Kunlun range, Northwest Tibet

Everest

Nepal expedition to remeasure height of Everest

hydraulic fracturing for shale gas

Damaging Sichuan earthquakes linked to fracking operations

earthquake monitoring

Crowdsourcing speeds up earthquake monitoring

San Andreas Fault

California’s current earthquake hiatus is an unlikely pause

San Andreas Fault

Signs of 1906 earthquake revealed in mapping of offshore northern San...

Deep below the Earth in the Tonga-Fiji region of the South Pacific, one enormous earthquake triggered another.

Massive earthquakes provide new insight into deep Earth

The Washington coast is geologically complex.

Hundreds of bubble streams link biology, seismology off Washington’s coast

A map of Japan showing locations for the epicenter of the 2011 Tohoku earthquake (✩),Kamioka (K), Matsushiro (M) and seismic survey instruments used (△ and ●). Credit: 2019 Kimura Masaya

A new way to sense earthquakes could help improve early warning...

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

Fast, simple new assessment of earthquake hazard

Roman monuments, including the Colosseum

Seemingly dormant geologic fault damaged famous Roman buildings 1,500 years ago

Graphic showing the Transition Zone inside the Earth Princeton seismologist Jessica Irving worked with then-graduate student Wenbo Wu and another collaborator to determine the roughness at the top and bottom of the transition zone, a layer within the mantle, using scattered earthquake waves. They found that the top of the transition zone, a layer located 410 kilometers down, is mostly smooth, but the base of the transition zone, 660 km down, in some places is much rougher than the global surface average. “In other words, stronger topography than the Rocky Mountains or the Appalachians is present at the 660-km boundary,” said Wu. NOTE: This graphic is not to scale. Credit: Kyle McKernan, Office of Communications

Massive Bolivian earthquake reveals mountains 660 kilometers below our feet

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