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noble gases

A small fragment of rock, part of a meteorite from the planet Mars.
Posted inNews

Flipping the Sequence of Martian Formation

Damond Benningfield, Science Writer by Damond Benningfield 15 July 202219 July 2022

Analysis of the Chassigny meteorite suggests the planet acquired most of its interior volatiles from meteorites, not from the solar nebula.

Image of Earth with a blue halo.
Posted inNews

Fossil Fuels Drive Increase in Atmospheric Helium

by Jennifer Schmidt 9 June 202219 July 2022

After decades of uncertainty, scientists have finally shown that fossil fuel extraction has flooded the atmosphere with 4He.

A protoplanet is covered by magma oceans and surrounded by a field of planetesimals.
Posted inNews

Noble Gas Hints at Mars’s Rapid Formation

by Jure Japelj 18 October 202129 March 2023

A new study finds that Mars’s mantle is neon-rich, putting constraints on the planet’s formation history.

Tucson, Arizona, with the Santa Catalina Mountains in the background
Posted inResearch Spotlights

Parsing Routes to Aquifer Recharge Along Mountain Fronts

by Terri Cook 8 February 202130 March 2023

Research from the Tucson Basin indicates that tracers can be used to distinguish surface and subsurface recharge, providing crucial data to support sustainable water management in arid environments.

Rocky, steep-sided desert valley
Posted inNews

The Dawning of the Age of Old Aquifers

Sarah Derouin, Science Writer by Sarah Derouin 21 August 201919 July 2022

A new technique using 81Kr can measure the age of old groundwater in arid regions. The method can be used as a proxy for past climates and weather patterns.

Mount Etna eruption, Sicily, Italy
Posted inScience Updates

Radon Tells Unexpected Tales of Mount Etna’s Unrest

by S. Falsaperla, M. Neri, G. Di Grazia, H. Langer and S. Spampinato 22 March 201819 July 2022

Readings from a sensor for the radioactive gas near summit craters of the Italian volcano reveal signatures of such processes as seismic rock fracturing and sloshing of groundwater and other fluids.

Wedell Sea ice source of Antarctic bottom water
Posted inResearch Spotlights

How Do the Deep Waters of the Antarctic Form?

by W. Yan 12 July 201619 July 2022

Researchers uncover new insights into the life cycle of water in the Antarctic region by measuring noble gas concentrations.

Features from AGU Journals

RESEARCH SPOTLIGHTS
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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