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Colorado

A debris flow triggered by Storm Hilary in Forest Falls, California. Still from a video posted to Twitter.
Posted inThe Landslide Blog

Mudslides and debris flows triggered by Storm Hilary

by Dave Petley 22 August 202322 August 2023

Videos of debris flows and mudflows from Storm Hilary.

An irrigation canal snakes by a field of lettuce outside Yuma, Ariz.
Posted inFeatures

Agriculture 3.0: Preparing for a Drier Future in the Colorado River Basin

Jane Palmer, Science Writer by Jane Palmer 5 July 20235 July 2023

Years of drought and climate change are causing water resources to dwindle in the Colorado River Basin. But farmers and scientists are collaborating to learn how to grow crops with less water.

A sign in front of a rock and a plant. Snow covers the ground.
Posted inNews

Urban Water Conservation Success in the Colorado River Basin

Jane Palmer, Science Writer by Jane Palmer 29 March 202329 March 2023

In the past few decades, cities in Arizona, Colorado, and Nevada have vastly increased their water use efficiency. They’ve also learned lessons that can inform other cities’ efforts.

On the right is the first stratigraphic section of the Grand Canyon, from Powell’s 1875 report, showing what would later be termed the Great Unconformity. A is the metamorphic basement—the oldest rocks that have been contorted. B is the Precambrian Grand Canyon Supergroup, which is composed of tilted sedimentary rocks that lack fossil assemblages. C indicates flat-lying Paleozoic rocks, which contain fossils marking the explosion of life. Two unconformities can be seen at x and y, with the former marking the Great Unconformity. The image on the left is a recent photograph of the Grand Canyon from Walhalla Plateau, with the red line showing the Great Unconformity. Blue lines trace the tilted layers below the famed surface, and yellow lines trace the flat-lying sedimentary rocks on top.
Posted inNews

The Great Unconformity or Great Unconformities?

by Alka Tripathy-Lang 23 December 202231 January 2023

Some scientists think the Great Unconformity was caused by Snowball Earth’s glaciations. Recent work suggests these phenomena might not be related.

Aerial view of the Colorado River
Posted inNews

Building Resilience in the Face of a Dwindling Colorado River

Jane Palmer, Science Writer by Jane Palmer 5 August 202225 October 2022

Policymakers, industry and conservation professionals, and tribal members explore pathways to a sustainable future for the millions of people reliant on the “lifeblood of the American West.”

A wide view of snow-covered pines in mountains.
Posted inResearch Spotlights

Trees Wearing Accelerometers Help Track Snowstorms

by Rebecca Dzombak 15 April 202215 April 2022

This device allows scientists to measure how much snow is trapped in canopies and predict changes to snowpack—a critical factor in annual water availability.

A room in a home filled with atmospheric research equipment, including three gas cylinders that are connected to a mass spectrometer.
Posted inNews

Crowdsourced Science Helps Monitor Air Quality in Smoke-Damaged Homes

by Fionna M. D. Samuels 23 February 202231 May 2022

Researchers collaborate with residents to measure airborne chemicals in homes and evaluate how clean the air really is after remediation from Colorado’s Marshall Fire.

This junction in Colorado’s Snake River is tinged with orange due to acid rock drainage.
Posted inNews

New Contamination Concern for Colorado Streams

by Nancy Averett 14 October 202129 March 2023

Abandoned hardrock mines and climate change cause metals and other elements to leach into streams. They also put rare earth elements into the water, a new study finds.

SAIL site in Gothic, Colo..
Posted inNews

Collaboration in the Rockies Aims to Model Mountain Watersheds Worldwide

by Saima May Sidik 21 September 202129 March 2023

As Earth’s climate changes at an unprecedented rate, the Surface Atmosphere Integrated Field Laboratory is studying precipitation on an unprecedented scale.

Plot showing distribution of iron species at three locations
Posted inEditors' Highlights

Zero-valent Iron in the Oxidizing Atmosphere?

by Jonathan H. Jiang 26 October 20205 May 2022

A comparative study of urban, semi-urban, and rural sites reveals that the species of atmospheric iron varies depending on location.

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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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