By reanalyzing seismic records, researchers found a plethora of tiny earthquakes in Southern California that trace new fault structures and reveal how earthquakes are triggered.
faults
Posted inNews
Secrets from the New Madrid Seismic Zone’s Quaking Past
High-resolution lidar topography reveals a long history of ancient earthquakes.
Posted inNews
Precariously Balanced Rocks Reveal Earthquake History in Israel
Using the prevalence of unstable rock formations in Israel’s Negev Desert, researchers determined that historical earthquakes in the region were weaker than previously thought.
Posted inEditors' Highlights
Imaging an Earthquake Rupture in High Definition
New field measurements using terrestrial laser scanning provide a detailed, centimeter-scale image of surface deformation patterns caused by the Magnitude 6.6 earthquake in Norcia, Italy.
Posted inResearch Spotlights
Resolving a Cordilleran Conundrum
A novel geophysical technique documents the existence of a “missing” fault, along which major displacement could have occurred during the Cretaceous on North America’s northwest margin.
Posted inEditors' Highlights
Real Time Probing of Shale Cracks in Double Torsion Experiments
Imaging crack propagation in shales using twin optical cameras and fast X-ray radiograph acquisition.
Posted inResearch Spotlights
Ancient Faults Amplify Intraplate Earthquakes
A comparison of deformation rates from Canada’s Saint Lawrence Valley offers compelling evidence that strain in the region is concentrated along ancient structures from previous tectonic cycles.
Posted inNews
Watch Tiny Cracks Travel in 3-D
Scientists used a transparent gel and high-speed photography to figure out how cracks form and spread. What they found could help explain earthquakes and fracturing glaciers.
Posted inEditors' Highlights
A New Spin on Grain Segregation in Fault Zones
Fine-grained layers in sheared fault gouge may be formed by shear-driven size-segregation in granular materials, rather than by shear localization.
Posted inEditors' Highlights
Successful Testing of Technique to Measure Seafloor Strain
A new optical fiber interferometry strain sensor tested off the Oregon coast holds promising prospects for seafloor geodesy.