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Journal of Geophysical Research: Solid Earth

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Photomicrographs in backscatter electron image mode of tholeiitic basalt samples
Posted inEditors' Highlights

A Thermochemical Recording Mechanism of Earth’s Magnetic Field

by Bjarne S. G. Almqvist 27 September 201910 November 2021

A laboratory study assesses thermochemical remanence as a reliable paleointensity recorder, which could open new venues for studying Earth’s ancient magnetic field.

Satellite view of the Salton Sea and surroundings in California
Posted inResearch Spotlights

Distant Quake Triggered Slow Slip on Southern San Andreas

by Terri Cook 23 September 201929 September 2021

A high-resolution map of surface displacements indicates that the 2017 Chiapas earthquake caused substantial creep along a segment of the San Andreas Fault, located 3,000 kilometers away.

Science buildings and living quarters on Fletcher’s Ice Island in 1967
Posted inNews

Scientists Rescue Historical Data Taken on Floating Ice Island

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 27 August 20198 November 2021

A never-before-published data set from the Cold War could help scientists unravel the mysterious western Arctic Ocean.

Graph showing the possible melting curve of hydrogen-bearing iron peroxide
Posted inEditors' Highlights

The Lower Mantle May Have a Wet Bottom

by S. W. Parman 6 August 20194 August 2023

Molecular dynamics calculations suggest that molten hydrogen-bearing iron peroxide (FeO2Hx) may produce the ultra-low velocity zones that occur at the core-mantle boundary.

Numerical simulation of granular flow
Posted inEditors' Highlights

Finessing Granular Flows

by A. Revil 16 July 201928 March 2023

Granular flows are important in geophysics to the pyroclastic flow, debris flow, and avalanches. Understanding their complex and rich physics is therefore important in simulating their dynamics.

The International Ocean Discovery Program’s JOIDES Resolution sits in port in Hobart, Tasmania, Australia, at the end of IODP Expedition 318 in 2010.
Posted inResearch Spotlights

An Integrated History of the Australian-Antarctic Basin

by Terri Cook 15 July 201929 June 2022

The first basin-wide compilation of seismic and geologic data shows that both margins experienced similar sedimentation patterns prior to the onset of Antarctic glaciation.

Shear contact strength and shear stress as a function of a step increase in normal stress
Posted inEditors' Highlights

Laboratory Study Probes Triggering Mechanisms of Earthquakes

by Bjarne S. G. Almqvist 3 July 20196 October 2021

A new experimental technique traces the state of a shearing fault gouge and shows for the first time how friction of a fault surface can change as a function of varying normal stress.

Distorted railway lines at the North Anatolian Fault due to the 1999 earthquake Aykut Barka
Posted inResearch Spotlights

Variations in Creep Along One of Earth’s Most Active Faults

by Terri Cook 6 June 201918 April 2022

Satellite-based radar images of motion along Turkey’s North Anatolian Fault are helping scientists understand when, where, and how creep occurs and its implications for seismic hazard.

A map showing vertical motions in southwest Japan 7 years after the 1946 Nankai earthquake
Posted inResearch Spotlights

Déjà Vu: Understanding Subduction Zones’ Cycle of Seismicity

by Terri Cook 3 June 201918 January 2022

A unique geodetic data set from Japan’s Nankai subduction zone offers an unparalleled opportunity to study surface deformation spanning almost an entire seismic cycle.

Photo of twelve gold grains used in this study
Posted inEditors' Highlights

X-Ray Computed Tomography Detects Resolution Scale Gold Grains

by A. Revil 2 May 201928 February 2023

A method combining partial-volume and blurring effects can be used to measure small features in computed tomography data volumes.

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