Lightning in a thunderstorm changes the electromagnetic field in a way that sparks upward lightning from tall structures.
magnetic fields & magnetism
Posted inEditors' Highlights
Probing the Age of the Oldest Ocean Crust in the Pacific
A new study extends the calibration of the Mesozoic Sequence down to the Mid Jurassic with multiscale marine magnetic anomaly data, demonstrating extraordinarily high reversal frequency.
Posted inScience Updates
Modernizing a Global Magnetic Partnership
For 30 years, INTERMAGNET, a worldwide network of ground-based observatories, has aided advances in navigation, precision drilling for oil and gas, and mitigating space weather impact on technology.
Posted inNews
Red Rocks: Using Color to Understand Climate Change
A recent study on hematite formation during the Triassic may help predict the effects of climate change on contemporary monsoonal environments.
Posted inNews
How Geodynamo Models Churn the Outer Core
New simulations of Earth’s outer core have reproduced magnetic fields that—for the first time—match paleomagnetic data collected from rocks.
Posted inResearch Spotlights
Spacecraft Reveal New Details of Magnetic Reconnection
Energetic electrons are accelerated directly by magnetic reconnections and can act as tracers of large-scale magnetic field conditions.
Posted inResearch Spotlights
Antarctic Lava Yields Clues to Earth’s Past Magnetic Field
A new analysis suggests that a widely accepted approximation of ancient magnetic field strength may be less accurate for the past 5 million years than previously thought.
Posted inScience Updates
Modeling Earth’s Ever-Shifting Magnetism
The World Magnetic Model, updated every 5 years through an international collaboration, supports numerous technologies that help us find our way.
Posted inAGU News
The Wobbly Anomaly and Other Magnetic Weirdness
From the connection between Earth’s core and life on the surface, way out to the ends of the solar system, this month’s issue of Eos takes a look at the study of magnetic fields.
Posted inFeatures
A Field Guide to the Magnetic Solar System
Not all planets move the needle. But whatever planet you take a magnetic compass to, it’s sure to point out clues to secrets underfoot.