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faults

Against a blue sky streaked with white clouds, Michael Bunds runs along a dirt road as he lands a black fixed-wing drone. Chelsea Scott, wearing red, stands with her back to the photographer, watching the drone and looking at desert scrub in the foreground.
Posted inENGAGE, News

Drone Rules Make Tracking Down Faults a Difficult Feat

by Alka Tripathy-Lang 6 October 202124 April 2024

Regulations differ from country to country, but on one point, they’re relatively uniform: Drones must remain within their operators’ line of sight. How do earthquake scientists collect drone data while working within the rules?

The San Andreas Fault near Juniper Hills, Calif.
Posted inResearch Spotlights

A New Method Produces Improved Surface Strain Rate Maps

by Jack Lee 19 July 20215 December 2022

The transdimensional Bayesian approach handles GPS data limitations better than existing methods and may assist future seismic hazard assessment studies.

An arc-shaped coseismic shear belt associated with the 2018 Mw 4.9 earthquake at Etna volcano shows up on both mapping and InSAR.
Posted inEditors' Highlights

Volcano—Tectonic Interactions at Etna

by J. Hubbard 6 July 202127 October 2021

Mapping of a 2018 earthquake that ruptured the eastern flank of Mount Etna shows that it occurred on a tectonic lineament that predates the volcano, and the kinematics match nearby tectonic domains.

Xray tomograms taken at two times which show fractures and pores within solid rock.
Posted inEditors' Highlights

When Will the Next Failure Be?

by G. A. Prieto 5 March 202127 January 2023

Unprecedented images of fracture networks in laboratory scale experiments mixed with machine learning algorithms help predict the timing of the next failure.

Photo taken from the International Space Station of Shikoku Island and other parts of Japan
Posted inResearch Spotlights

An Innovative Approach for Investigating Subduction Slip Budgets

by David Shultz 19 February 202118 January 2022

A new 3D model offers a state-of-the-art look at the full spectrum of slip behaviors in the Nankai subduction zone off Japan.

Plot showing the average number of shallow earthquakes near Parkfield, California, from 2006 to 2014
Posted inEditors' Highlights

Why are Earthquakes on the San Andreas Seasonally Modulated?

by Victor Tsai 19 February 20219 February 2022

There is growing evidence that some earthquakes occur seasonally but also that water loading cannot explain these observations.

Interseismic and coseismic slip models of the Philippine Fault on Leyte island
Posted inEditors' Highlights

A New Picture of Seismogenesis on the Philippine Fault

by Isabelle Manighetti 19 January 20216 October 2021

Long-time series of satellite observation reveal that the creeping segment of the Philippine Fault is also capable of producing strong earthquakes, and show where these earthquakes might occur.

Photograph of pseudotachylytes, also known as “earthquake fossils”, from Santa Rosa, California
Posted inEditors' Vox

New Insights from the Magnetic Properties of Fault Rocks

by Mark J. Dekkers, E. C. Ferré, Y.-M. Chou, T. Yang, J. Chen, E.-C. Yeh and W. Tanikawa 13 November 20206 October 2021

Magnetic studies offer a new strand for the analysis of faulting processes and could help with better understanding of fault rupture and earthquakes.

The toppled remains of a building on the shore of Palu Bay in Indonesia following a 2018 earthquake and tsunami
Posted inResearch Spotlights

Redes Sociales Ayudan a Revelar la Causa del Tsunami en Indonesia en el 2018

Aaron Sidder, freelance science writer by Aaron Sidder 21 October 20206 October 2021

Videos de Twitter y YouTube ayudaron a los científicos a descubrir los mecanismos físicos que generaron el gran tsunami en Palu Bay después de un terremoto de magnitud 7.5.

Illustration of grains being sheared off fault sides and ground up
Posted inEditors' Highlights

Groove is in the Fault

by Thorsten W. Becker 16 October 20206 October 2021

Rock sliding experiments on meter scales show groove patterns which are controlled by normal stress. This may help better understand earthquake source conditions from exhumed faults.

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