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plasmas

Researchers analyze space storms to better understand how the Van Allen belts lose particles.
Posted inResearch Spotlights

How Earth’s Outer Radiation Belts Lose Their Electrons

by E. Underwood 17 October 20174 May 2022

A new analysis of three space storms reveals the mechanisms of particle loss from the Van Allen belts.

: Researchers examine the origins of plasma ropes in Mars’s magnetotail
Posted inResearch Spotlights

Angles of Plasma Ropes near Mars Point to Different Origins

by Sarah Stanley 11 October 20174 May 2022

Variation in the orientation of flux rope features in Mars’s magnetotail suggests that some of them form on the planet’s Sun-facing side and travel to the night side.

Posted inEditors' Vox

New Findings from Old Data

by M. Liemohn 29 August 20177 March 2022

Recalibrated and reanalyzed data from the Voyager flybys of Jupiter 40 years ago, presented in a series of papers in JGR: Space Physics, show the value of archival data.

New observations reveal secrets of sodium flares in Mercury’s exosphere
Posted inResearch Spotlights

Observing Mercury’s Brilliant Flares from Earth

by E. Underwood 9 August 20177 March 2022

Researchers make the first short-term observation of sodium flares in Mercury’s exosphere.

Researchers unravel the mystery of an anomaly in Earth’s ionosphere
Posted inResearch Spotlights

Auroras May Explain an Anomaly in Earth’s Ionosphere

by E. Underwood 7 August 201723 January 2023

A new study finds that the ionospheric anomaly over the Weddell Sea is likely influenced by proximity to auroral energy input, rather than by tilting magnetic fields.

Researchers look at Hubble images to spot secondary arcs of Jupiter’s aurora.
Posted inResearch Spotlights

Hubble Reveals Less Studied Regions of Jupiter’s Auroras

by S. Witman 25 July 201711 August 2022

With a dose of fiery plasma, the secondary arcs of Jupiter’s aurora shine bright.

Understanding how solar storms subside will help to improve future forecasting
Posted inResearch Spotlights

Scientists Probe the Calm After Solar Storms

by Mark Zastrow 21 March 20174 May 2022

In forecasting the effects of solar storms, understanding how they subside—and not just how they arrive—will be crucial.

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 201718 January 2023

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.

Researchers identify the role of plasma waves where the magnetic fields of Earth and the Sun interact.
Posted inResearch Spotlights

Plasma Waves Pinpointed at the Site of Magnetic Reconnection

by Mark Zastrow 17 February 201710 March 2022

When the Earth's and the Sun's magnetic fields meet, they realign in explosive and mysterious reconnections. Data suggest that plasma waves called kinetic Alfvén waves play a key role.

Jupiter-auroras-plasma-magnetic-field-interaction
Posted inResearch Spotlights

Jupiter's Auroras Recharge Between Solar Storms

by Mark Zastrow 21 September 20164 May 2022

New research suggests that Jupiter's magnetic field replenishes its stock of plasma during lulls in solar activity, creating spectacular displays when a solar storm hits.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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