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earthquakes

A tan and brown striped rock surface with a fault running through the middle
Posted inResearch Spotlights

Rougher Faults May Generate More Earthquake Aftershocks

Sarah Stanley, Science Writer by Sarah Stanley 1 May 20231 May 2023

Lab experiments on pieces of granite reflect natural aftershock dynamics and highlight the role of rock roughness along a fault.

A photo looking up between tall trees with red bark and green canopy.
Posted inNews

Dating the World’s Tallest Trees

Katherine Kornei, Science Writer by Katherine Kornei 27 April 202319 May 2023

Scientists analyzed more than 1.2 million trees to assemble chronologies of annually dated rings, which will inform fields ranging from climate science to seismology.

Diagram and graphs from the paper.
Posted inEditors' Highlights

Zooming in on the Nucleus of Earthquake Fault Slips

by Hiroki Sone 25 April 202325 April 2023

Controlled arrest and re-nucleation of laboratory earthquakes reveals nucleation processes unapproachable by traditional linear elastic fracture mechanics.

Aerial view of a large part of a city showing numerous buildings collapsed into rubble piles amid many other buildings that are still standing.
Posted inFeatures

A Common Language for Reporting Earthquake Intensities

by David J. Wald, Sabine Loos, Robin Spence, Tatiana Goded and Ayse Hortacsu 21 April 202321 April 2023

Scientists are working together to establish a standardized international scale for measuring and reporting the intensities and impacts of earthquake shaking.

Graphs from the paper.
Posted inEditors' Highlights

Bayesian Inversion Used to Recover Geometry of Ruptured Fault

by Elisa Tinti 21 April 202319 April 2023

A new Bayesian inversion framework is used to solve non-planar geometry of a ruptured fault from spatially variable slip and rake measured with geodesy.

A house has gaping holes in its sides as a result of earthquake damage.
Posted inNews

Felt Reports Could Shake Up Earthquake Response

by Saima May Sidik 11 April 202311 April 2023

Firsthand accounts of earthquake impacts could aid in identifying people who require help as well as increasing safety in some areas.

Several people sit and stand around a large map of the seafloor on a table in laboratory space.
Posted inScience Updates

Observing a Seismic Cycle at Sea

by Margaret Boettcher, Emily Roland, Jessica Warren, Robert Evans and John Collins 7 March 202325 May 2023

Scientists organized a trio of expeditions to document the buildup of stress leading to a large earthquake on a seafloor fault, developing innovations for successful seagoing research in the process.

Aerial photo of the San Andreas Fault
Posted inNews

Accounting for Offbeat Earthquakes Could Improve Forecasts

by Erin Martin-Jones 2 March 20232 March 2023

A new model considers the full history of earthquakes on a fault, improving forecasts of when the next will strike.

Diagram of a fault zone
Posted inEditors' Highlights

Upscaling Slip and Friction From Grains to the Fault Core

by François Renard 10 February 20238 February 2023

Numerical simulations demonstrate how averaging deformations at the grain scale may unravel the macroscopic friction and unstable slip behavior of a fault core.

An aerial view of a beige and green landscape on the San Andreas fault
Posted inResearch Spotlights

A New Measure of Roughness Could Advance Earthquake Geophysics

Sarah Stanley, Science Writer by Sarah Stanley 8 February 20238 February 2023

Scientists recently developed an alternative way to measure a rock’s roughness. It might help them understand the physics of faults.

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