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Tectonic deformation

Different scenarios influencing plate thickness
Posted inEditors' Highlights

Frequency Dependent Plates

by T. W. Becker 16 October 202015 October 2020

Rocks stretch, break, and flow, depending on how and under which conditions they are loaded. A new formulation to better capture Earth’s rheology is explored in the context of plate thickness.

Map showing observations of slow slip
Posted inEditors' Highlights

Slow Slip By Any Other Name

by T. Parsons 4 March 2020

Earth’s faults slip most catastrophically as earthquakes. The rise of geodesy reveals an array of slower slip events, meaning faults are nearly always active. Are these behaviors really so different?

A scientist installs GPS equipment to monitor earthquakes.
Posted inResearch Spotlights

Ancient Faults Amplify Intraplate Earthquakes

by Terri Cook 23 January 2019

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.

Kate Scharer examining sediments disrupted by the San Andreas Fault near Desert Hot Springs, California.
Posted inResearch Spotlights

Catching Glimpses of Centuries-Old Earthquakes

by S. Witman 5 May 2017

Researchers in the western United States survey the earthquakes that have torn up California for the past millennium.

Matt Lancaster sets up a GPS receiver.
Posted inScience Updates

Using Strain Rates to Forecast Seismic Hazards

by E. L. Evans 14 March 201728 September 2021

Workshop on Geodetic Modeling for Seismic Hazard; Menlo Park, California, 19 September 2016

Posted inResearch Spotlights

New Models Explain Unexpected Magnitude of China's Wenchuan Quake

by David Shultz 17 August 201517 August 2015

The 2008 earthquake surprised scientists, but the inclusion of new variables reveals that Earth's crust under the Sichuan Province was under more strain than previously thought.

Posted inResearch Spotlights

Surface Folds Hint at Magnitude of Slip Along Thrust Faults

by J. Rosen 1 May 20151 May 2015

The shape of deformed sediments at the surface may allow researchers to estimate the cumulative slip along thrust faults such as the Chelungpu fault in Taiwan.

Posted inResearch Spotlights

Ancient Earthquakes Made an Island Rise and Fall

by C. Schultz 31 December 201415 February 2015

Observations track elevation changes of an island in the Kodiak Archipelago to past ruptures of the Alaska-Aleutian megathrust fault.

Posted inResearch Spotlights

Changing Crustal Velocities Preceded 2011 Tohoku-oki Quake

by J. Rosen 18 November 201424 July 2015

Researchers examined the crustal deformation associated with earthquakes that occurred before the 2011 Tohoku-oki earthquake.

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