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Science News by AGU

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Radiation belts

Radio towers at the VLF Transmitter Cutler in Maine
Posted inResearch Spotlights

Terrestrial Radio Signals May Suppress High-Energy Electrons

by Morgan Rehnberg 12 October 2020

Naval radio signals may cause the formation of a barrier observed during geomagnetic storms that is seemingly impenetrable by relativistic electrons.

Posted inEditors' Highlights

Energetic Electrons Can Penetrate the Stratosphere

by Viviane Pierrard 17 October 2018

Precipitations of electrons with energies greater than 30 kiloelectron volts from the slot region penetrate at low altitude and can contribute to destroy ozone.

Posted inEditors' Vox

Earth’s Radiation Belts: Celebrating Six Decades of Discovery

by D. N. Baker and L. J. Lanzerotti 20 March 201821 March 2018

A recent celebration of the 60th anniversary of the launch of Explorer 1 reflected on the incredible progress and scientific insights from this and subsequent space missions.

Researchers use satellite data to spot how plasma waves affect the Van Allen radiation belts around Earth
Posted inResearch Spotlights

How “Whistling” Plasma Waves Shape Earth’s Radiation Belts

by Mark Zastrow 2 June 2017

The Van Allen radiation belts surrounding Earth shrink and swell due to plasma waves moving through them, an analysis of satellite data suggests.

New research shows how lightning-triggered plasma waves in Earth's magnetosphere trigger processes that can threaten satellites
Posted inResearch Spotlights

How Lightning Creates "Killer Electrons" in Earth's Radiation Belts

by Mark Zastrow 14 March 2017

New calculations show that lightning-triggered plasma waves in Earth's magnetosphere absorb energy from slow particles and energize electrons to levels that can damage satellites severely.

Posted inNews

Human Radio Transmissions Create Barrier to "Killer Electrons"

by JoAnna Wendel 16 December 20157 September 2016

An interaction between radio waves and the Van Allen radiation belts creates a bubble around the Earth that high-energy electrons can't penetrate.

Posted inResearch Spotlights

The Curious Case of the Halloween Ghost Electrons

by Mark Zastrow 30 October 201530 October 2015

When solar storms pounded Earth during Halloween in 2003, scientists were eager to measure their effects. But new research shows one satellite was seeing "ghost" particles that probably weren't real.

Posted inResearch Spotlights

Spacecraft Records Rising-Tone Magnetosonic Waves

by C. Minnehan 11 September 201511 September 2015

A rising tone in wave frequencies suggests a complicated, nonlinear series of interactions between electromagnetic sound waves and protons near the magnetic equator.

From AGU Journals

MOST SHARED
Geophysical Research Letters
“Climate Change Drives Widespread and Rapid Thermokarst Development in Very Cold Permafrost in the Canadian High Arctic”
By Louise M. Farquharson et al.

HIGHLY CITED
Radio Science
“Vegetation modeled as a water cloud”
By E. P. W. Attema,  Fawwaz T. Ulaby

HOT ARTICLE
Geophysical Research Letters
“Numerical Simulation of Atmospheric Lamb Waves Generated by the 2022 Hunga-Tonga Volcanic Eruption”
By Angel Amores et al.

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