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magnetic fields & magnetism

Map of seafloor from the paper.
Posted inEditors' Highlights

What’s Hot in Iceland? A Close Up View of Hotspot-Ridge Interaction

by Lindsay Lowe Worthington 25 March 202425 March 2024

New seafloor magnetic data help scientists retrace the evolution of the Reykjanes Ridge, lending insights into the effects of a mantle plume on mid-ocean ridge organization and evolution.

Wide-angle view showing green, ribbon-like aurorae as well as glowing blue, purple, and white cloud-shaped features in the night sky.
Posted inScience Updates

Ionospheric Fireworks Illuminate Auroral Science

by Tima Sergienko, Yoshihiro Yokoyama, Urban Brändström, Masatoshi Yamauchi and Anders Tjulin 28 February 202428 February 2024

A sounding rocket experiment set off a spectacular nighttime light show over Scandinavia as it produced new insights into ionospheric behavior near an aurora.

A helicity in front of ocean water.
Posted inEditors' Vox

The Twists and Turns of Helicity Studies

by Kirill Kuzanyan, Nobumitsu Yokoi, Manolis K. Georgoulis and Rodion Stepanov 15 February 202414 February 2024

A new book explores the fundamental role that helicities play in different astrophysical and geophysical phenomena and presents perspectives from various scientific disciplines that study them.

Satellite photo of Earth with a large shadow covering Antarctica.
Posted inEditors' Highlights

Solar Eclipses May Initiate Disturbances in Geospace

by Yuichi Otsuka 6 February 20245 February 2024

The statistical evidence from 21 years of data suggests that a solar eclipse may trigger a geomagnetic substorm, which is a disturbance in the Earth’s magnetosphere and ionosphere.

An illustration showing the interior of Mercury, including its crust; the mantle, with a red “snow zone” with illustrations of iron snowflakes; and the core.
Posted inResearch Spotlights

Iron Snow Ebb and Flow May Cause Magnetic Fields to Come and Go

by Nathaniel Scharping 2 January 20242 January 2024

Lab experiments find that iron crystals in planetary cores may form in bursts, causing periodic dynamos.

Artist’s rendering of NASA’s Parker Solar Probe during a fly-by of Venus
Posted inNews

Lightning Struck Down as Source of a Venus Whistler

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 13 December 202313 December 2023

Whistlers were a key piece of evidence in favor of Venusian lightning. New measurements question the connection.

A power station on a green lawn with hills and trees in the background
Posted inResearch Spotlights

Protecting Power Grids from Space Weather

Rachel Fritts, Science Writer by Rachel Fritts 4 December 20234 December 2023

A new paper explores ways to mitigate the impact of geomagnetically induced currents on the New Zealand power grid.

A flock of birds flies over a field.
Posted inNews

Solar Storms May Scramble Signals for Migratory Birds

by J. Besl 13 November 202313 November 2023

Birds use Earth’s magnetic field to migrate, but severe space weather may interfere with navigation and reduce the number of birds in the sky.

Photo of 2 scientists sampling a rock outcrop.
Posted inEditors' Highlights

Should I Stay or Should I Go…To Another Paleomagnetic Site?

by Daniel Pastor-Galán 3 November 20232 November 2023

When collecting a finite number of paleomagnetic samples, having more sites, each with only one sample, achieves superior results compared to sites with multiple samples.

An image of the Sun in ultraviolet wavelengths shows a large solar flare occurring.
Posted inResearch Spotlights

Aurora Records Reveal Shortened Solar Cycle During Maunder Minimum

by Nathaniel Scharping 10 October 202310 October 2023

Fastidious night sky observations from Korean historical texts provide a novel source of evidence for an altered solar cycle during periods of low magnetic activity.

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Features from AGU Publications

Research Spotlights

Mapping the Ocean Floor with Ancient Tides

6 May 20256 May 2025
Editors' Highlights

First Benchmarking System of Global Hydrological Models

7 May 20257 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
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