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magnetic fields & magnetism

Oleoducto en el sitio de derrame de petróleo Bemidji en Minnesota
Posted inResearch Spotlights

Los microbios podrían comer minerales magnéticos en un sitio de derrame de petróleo

Sarah Stanley, Science Writer by Sarah Stanley 7 June 20227 June 2022

Nuevos experimentos en un antiguo sitio de derrames de petróleo en Minnesota sugieren que los procesos no biológicos por sí solos no pueden explicar la disminución de la magnetización.

A computer simulation of solar wind entry layer and flux transfer events (green lines) in Mercury’s dayside magnetosphere
Posted inResearch Spotlights

Solar Wind a Major Driver of Atmospheric Sodium at Mercury

by Morgan Rehnberg 27 May 202227 July 2022

MESSENGER observations show a 50% rise in atmospheric sodium-group ions during periods of high solar wind activity.

Chart showing polar cap index values for four days around the St Patrick’s Day storm of 2015.
Posted inEditors' Highlights

Watching the Substorms Grow

by Michael A. Hapgood 24 May 20222 August 2022

Updated procedures enable consistent use of a wide network of polar magnetometers to monitor energy flow into the tail of Earth’s magnetosphere during the growth phase of substorms.

Installation of new pipeline through the Bemidji oil spill site in Minnesota
Posted inResearch Spotlights

Microbes Might Munch Magnetic Minerals at Oil Spill Site

Sarah Stanley, Science Writer by Sarah Stanley 19 May 20227 June 2022

New experiments at an old oil spill site in Minnesota suggest that nonbiological processes alone may not account for decreased magnetization.

Líneas de campo magnético simuladas en amarillo alrededor de la luna de Saturno Triton.
Posted inResearch Spotlights

Encontrando los océanos ocultos de las lunas usando campos magnéticos inducidos

by Morgan Rehnberg 5 May 20225 May 2022

Un análisis de componentes principales de modelos especulativos puede predecir con más seguridad que las técnicas anteriores la p^ppresencia de un océano subsuperficial en un objeto planetario.

Transmission electron microscope images of diverse synthetic hematite grains were used to explain key domain state and anisotropy signals in first-order reversal curve (FORC) diagrams.
Posted inEditors' Highlights

A Step Towards Understanding the Magnetic Properties in Hematite

by Agnes Kontny 26 April 20227 September 2022

Scientists present the most comprehensive available magnetic domain state and anisotropy study for synthetic and natural hematite from first-order reversal curve diagrams.

A back-scattered electron image of an experimental charge showing a miniaturized model of the core-mantle boundary equilibrated at pressure-temperature conditions thought to prevail during core formation.
Posted inEditors' Highlights

New Results Deepen the Mystery of Earth’s Early Magnetic Field

by Carolina Lithgow-Bertelloni 14 April 202214 March 2023

How was Earth’s early magnetic field produced? New experimental results and modeling show that the energy source could not have come from exsolution of lithophile elements from the core.

A blue ring of auroral emission glows above Saturn’s north pole.
Posted inNews

Saturn’s Powerful Winds Explain Changes in the Length of Its Day

Katherine Kornei, Science Writer by Katherine Kornei 17 March 20228 August 2022

Atmospheric winds moving at more than 7,000 kilometers per hour distort Saturn’s magnetic field, revealing why spacecraft have measured changes in the length of a day on the ringed world.

Simulated magnetic field lines in yellow around Neptune’s moon Triton.
Posted inResearch Spotlights

Finding Moons’ Hidden Oceans with Induced Magnetic Fields

by Morgan Rehnberg 9 March 20225 May 2022

A principal component analysis of speculative models can more confidently predict the presence of a planetary object’s subsurface ocean than previous techniques.

A “black smoker” chimney
Posted inResearch Spotlights

Exploration and Evaluation of Deep-Sea Mining Sites

Aaron Sidder, freelance science writer by Aaron Sidder 14 February 202214 February 2022

Two studies chart new territory for the fledgling deep-sea mining industry through advances in the identification and analysis of seafloor hydrothermal mounds.

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Features from AGU Journals

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Geophysical Research Letters
“Neural Networks Map the Ebb and Flow of Tiny Ponds”
By Sarah Derouin

EDITORS' HIGHLIGHTS
Community Science
“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
Reviews of Geophysics
“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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