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magnetic fields & magnetism

View of steep hills with exposures of dark rock as well as patches of green vegetation
Posted inFeatures

Baked Contacts Focus a Lens on Ancient Lava Flows

by Anthony Pivarunas, Margaret Avery, Joseph Biasi and Leif Karlstrom 1 February 20231 February 2023

Two studies, conducted 40 years apart, show how combining field observations and thermal modeling can reconstruct the history of massive lava flows and how they altered the surrounding landscape.

Illustration of NASA’s Cassini spacecraft diving through the plume of Saturn’s moon Enceladus in 2015
Posted inFeatures

Marine Science Goes to Space

by Damond Benningfield 4 January 20234 January 2023

Space and ocean scientists take a splash course in multidisciplinary science to chart our solar system’s ocean worlds.

Swirling cloud bands in Jupiter’s northern hemisphere
Posted inNews

Could Jupiter’s Heat Waves Help Solve a Planetary Energy Crisis?

by Tim Hornyak 9 November 20229 November 2022

Infrared observations reveal that Jupiter’s upper atmosphere is much warmer than models predict. The discovery may be a clue to finding missing heat sources in other giant planets.

Image of a Coronal Mass Ejection traveling towards Earth.
Posted inEditors' Vox

Machine Learning Helps to Solve Problems in Heliophysics

by Enrico Camporeale, Veronique Delouille, Thomas Berger and Sophie Murray 3 November 20222 November 2022

A new special collection invites papers pertaining to the use of machine learning techniques in all sub-fields of heliophysics.

Three globes showing deep mantle structures in shades of red (hot structures) and blue (cold structures), with shading in each color family indicating depth. The first globe represents the mantle at 200 million years ago. The second shows the mantle at 100 million years ago. The third shows the present-day mantle. Superimposed atop the mantle structures are gray outlines of where a new model shows the continents were at each time. These globes show Asia and Australia on the left and the Pacific Ocean on the right.
Posted inNews

Billion-Year Rewind Tracks Supercontinents and Mantle Structures

by Alka Tripathy-Lang 12 October 202228 October 2022

Scientists have traced past pathways of tectonic plates back a billion years using computer models, with intriguing results. Incorporating geologic data as a check on model output, however, has proven tricky.

Computer-generated visualization of solar plasma interacting with Earth’s magnetic field.
Posted inFeatures

Space Raindrops Splashing on Earth’s Magnetic Umbrella

by Laura Vuorinen, Adrian LaMoury, Emmanuel Masongsong and Heli Hietala 7 October 20227 October 2022

Though not as damaging as extreme space weather events, showers of plasma jets hit Earth’s magnetic shield every day—yet we’re only beginning to understand their effects.

A steplike fracture in the soil in the foreground of a vineyard
Posted inResearch Spotlights

Slight Shifts in Magnetic Field Preceded California Earthquakes

by Joshua Rapp Learn 6 October 20226 October 2022

Magnetometers detected faint signals that with further study, may improve our understanding of what happens before earthquakes and offer promise for early detection.

Posted inEditors' Highlights

Origin of Dawnside Subauroral Plasma Flows in Geomagnetic Storms

by Susan Trumbore 12 September 202218 October 2022

Geomagnetic storms induce fast plasma flows next to the aurora and affect space weather. Lin et al. explain the origin of a special “dawnside” plasma stream that occurs only during extreme storm events.

Graph from the paper.
Posted inEditors' Highlights

Magnetofossils Unveil Paleoredox Conditions in Extreme Climate

by Mark J. Dekkers 30 August 20229 November 2022

The Paleocene-Eocene Thermal Maximum, a thermal pulse about 56 million years ago, is an analog for future global warming. A new magnetofossil study shows progressive ocean deoxygenation.

Diagram showing the interior of the Sun
Posted inFeatures

Shake, Rattle, and Probe

by Damond Benningfield 25 August 202217 January 2023

Helioseismology allows scientists to study the interior of the Sun, solve some basic physics mysteries, and forecast space weather.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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