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Geochemistry

Posted inEditors' Highlights

“North Pacific Nutrient Leakage” During Glacials

by H. Bostock 1 December 20174 May 2022

Carbon isotope data suggest an alternative source of nutrients to the Eastern Equatorial Pacific during glacial periods.

Posted inAGU News

Manning and Marty Receive 2017 Norman L. Bowen Award

by AGU 10 November 201719 July 2022

Craig Manning and Bernard Marty will receive the 2017 Norman L. Bowen Award at the 2017 American Geophysical Union Fall Meeting, to be held 11–15 December in New Orleans, La. The award recognizes “outstanding contributions to volcanology, geochemistry, or petrology.”

Researchers use computer modeling to uncover a new mechanism behind fluid flow in Earth’s crust
Posted inResearch Spotlights

Scientists Simulate New Mechanism of Fluid Flow in Earth’s Crust

by Sarah Stanley 1 November 20175 May 2022

Three-dimensional high-performance computer modeling reveals the behavior of fluid transport waves generated by chemical reactions that take place during metamorphism.

Researchers look to hydrothermal vents for clues into the movement of Earth’s lower crust
Posted inResearch Spotlights

Is the Lower Crust Convecting Beneath Mid-Ocean Ridges?

by Terri Cook 2 October 20171 October 2021

The first attempt to couple models of hydrothermal circulation and magmatic convection along fast-spreading ridges may explain the spacing of hydrothermal vent fields along the East Pacific Rise.

Posted inNews

Clues Found That Earth May Have a Thermostat Set to “Habitable”

by L. Joel 5 September 20175 January 2023

Weathering of rocks can control Earth’s temperature over geologic timescales, new geochemical data suggest.

Researchers spot a new technique to seek out sources of nitrous oxide
Posted inResearch Spotlights

New Technique Could Help Scientists Track Nitrous Oxide Sources

by Sarah Stanley 12 July 201725 July 2022

A long-term study in Switzerland reveals the promise of a new method to determine isotopic composition of the potent greenhouse gas.

Posted inEditors' Vox

Tracing Water Through the Critical Zone

by M. Sprenger and M. Weiler 12 June 201723 September 2022

The authors of a recent paper in Reviews of Geophysics describe how isotope hydrology offers new insights into interactions at the interface between soil, vegetation, and the atmosphere.

Posted inNews

A Volcanic Trigger for Earth’s First Mass Extinction?

by L. Joel 30 May 201730 January 2023

Abnormally high levels of mercury in Ordovician rocks may imply that a huge surge of volcanism took place at a time when much of the planet’s ocean life vanished.

Posted inEditors' Vox

Competing Models of Mountain Formation Reconciled

by A. Parsons 8 May 201730 September 2021

The author of a prize-winning paper published in Geochemistry, Geophysics, Geosystems describes new insights into crustal mechanics and the formation of the Himalaya.

New measurements help researchers assess methane emitted by wetlands
Posted inResearch Spotlights

What’s the Average Methane Isotope Signature in Arctic Wetlands?

by Terri Cook 4 May 201719 September 2022

Aircraft measurements confirm that methane emissions from northern European wetlands exhibit a uniform regional carbon isotopic signature, despite considerable ground-level heterogeneity.

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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
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“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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