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magnetic fields & magnetism

A red plane flies against clear blue skies over white ice. Mountains can be seen in the background.
Posted inResearch Spotlights

How Thick Is Antarctic Ice, and What Is Underneath?

by Saima May Sidik 22 February 202322 February 2023

Scientists used electromagnetic fields to determine the thickness of fast ice.

Graphs showing the interior evolution of Miranda diverging from that of Ariel.
Posted inEditors' Highlights

What Surprises do the Icy Uranian Moons Hold?

by Kelsi Singer 22 February 202317 February 2023

With efforts ramping up to send a spacecraft back to the Uranian system, anticipation is increasing as to what geological surprises are hiding inside and on the surfaces of the icy Uranian moons.

Aerial photo of study site and two graphs.
Posted inEditors' Highlights

Large Geomagnetic Field Changes Recorded by Archeomagnetism

by Agnes Kontny 14 February 202314 March 2023

A rare case of absolute paleointensity data in sub-centennial resolution from an archeological site provide much higher values than predicted by existing magnetic field models.

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 202325 May 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

Damond Benningfield, Science Writer by Damond Benningfield 4 January 202325 September 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?

Tim Hornyak, Science Writer by Tim Hornyak 9 November 202217 February 2023

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 20224 August 2023

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 202218 July 2023

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

Joshua Learn, Science Writer 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.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

What Makes Mars’s Magnetotail Flap?

20 April 202620 April 2026
Editors' Highlights

Choice of Glen’s n Leads to Differing Projections of Ice Sheet Mass Loss

20 April 202616 April 2026
Editors' Vox

Synergistic Integration of Flood Inundation Modeling Methods

10 April 202610 April 2026
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