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Geophysical Research Letters

Visit the journal.

Posted inResearch Spotlights

California's 2012–2014 Drought Unusual for Last Millennium

by P. Kollipara 3 April 201521 October 2021

Soil moisture estimates, inferred from thousands of tree rings spanning the past 12 centuries, highlight the severity of the recent record-breaking drought.

Posted inResearch Spotlights

Aquifers Spew More Pollution into Oceans Than Rivers

by N. Akpan 31 March 201527 September 2022

A new model makes a direct estimate of contaminants in submarine groundwater discharge.

Posted inResearch Spotlights

Large-Scale Electric Currents May Flow Through Mercury's Crust

by J. Orwig 18 March 201516 November 2021

NASA's MESSENGER spacecraft discovered electric currents in Mercury's magnetosphere directed toward and away from the planet. Do the currents reach the planet? If so, where do they go?

Posted inResearch Spotlights

Unusual Echo Signal in Atmospheric E Layer

by J. Orwig 11 March 201520 October 2021

Metallic plasma layers in Earth's ionosphere interfere with radio communications and produce odd echo behavior at specific frequencies.

Posted inResearch Spotlights

Seismic Stress Modeling Puts Istanbul in the Crosshairs

by C. Schultz 3 March 201518 April 2022

Twenty years of ground motion observations show that seismic strain is accumulating south of Istanbul.

Posted inResearch Spotlights

What Drove Sea Surface Temperature Change During the Pleistocene?

by J. Orwig 2 March 20153 July 2023

New information suggests that atmospheric carbon dioxide concentration was just one of the main drivers of warming sea surface temperatures in the Pleistocene.

Posted inResearch Spotlights

"Knobby Terrain" a Sign of Mars's Explosive Past

by E. Betz 27 February 201517 February 2023

Newly identified knobby terrain related to ancient volcanoes on Mars hint that pyroclastic ash and rock flowed down slopes early in the red planet's history.

Posted inResearch Spotlights

Changing Patterns in U.S. Air Quality

by C. Schultz 18 February 201513 February 2023

Over the northeast United States, ground-level ozone will peak in the winter rather than the summer thanks to continued reductions of regional nitrogen oxide emissions from smokestacks and tailpipes.

Posted inResearch Spotlights

Tracking Down a Subduction Zone Earthquake

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 13 February 201524 August 2023

Researchers use computer simulations to find the date and earthquake source of an ancient tsunami that deposited sediment in a Hawaii sinkhole.

Posted inResearch Spotlights

Microbial Activity in Dry Soils

by C. Minnehan 9 February 20157 September 2022

Researchers investigate how microbes respire in dry conditions.

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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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