Tests of seismic attenuation show fluid saturation and high pressure near a seismic source reduce high-frequency content, challenging the idea of slow slip as the cause of low-frequency earthquakes.
faults
Posted inResearch Spotlights
Rougher Faults May Generate More Earthquake Aftershocks
Lab experiments on pieces of granite reflect natural aftershock dynamics and highlight the role of rock roughness along a fault.
Posted inEditors' Highlights
Bayesian Inversion Used to Recover Geometry of Ruptured Fault
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.
Posted inNews
The Western Great Basin Has an Arsenic Problem—Blame Its Geology
A new study links geological factors such as faulting and geothermal activity to an elevated risk of arsenic contamination in private wells across the Great Basin.
Posted inEditors' Highlights
Radar Satellites Capture Subtle Slip Evolution on Faults
A five-year time series from radar satellite imagery tracks surface slip on major faults in the San Francisco Bay Area, capturing subtle velocity variations and controlling factors.
Posted inScience Updates
Observing a Seismic Cycle at Sea
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.
Posted inNews
Accounting for Offbeat Earthquakes Could Improve Forecasts
A new model considers the full history of earthquakes on a fault, improving forecasts of when the next will strike.
Posted inEditors' Highlights
Upscaling Slip and Friction From Grains to the Fault Core
Numerical simulations demonstrate how averaging deformations at the grain scale may unravel the macroscopic friction and unstable slip behavior of a fault core.
Posted inResearch Spotlights
A New Measure of Roughness Could Advance Earthquake Geophysics
Scientists recently developed an alternative way to measure a rock’s roughness. It might help them understand the physics of faults.
