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erosion & weathering

Image of eroded ground under a tilled, yellowing prairie landscape
Posted inNews

A Dirty Truth: Humans Began Accelerating Soil Erosion 4,000 Years Ago

by Richard J. Sima 10 December 201915 November 2021

Recent research combining analysis of carbon dating, sediment accumulation rates, and pollen records from 632 lake beds worldwide finds deforestation tied to increased soil erosion.

A raft’s eye view of rapids on the Colorado River in the Grand Canyon
Posted inFeatures

Will Earth’s Grandest Canyon Keep Getting Grander?

by Mary Caperton Morton 19 November 20193 November 2021

Living in Geologic Time: Rafting through the past, present, and future of the Colorado River and the Grand Canyon.

Satellite image of a brown wildfire burn scar on the coast
Posted inNews

Wildfires Affect Water Resources Long After the Smoke Clears

by Megan Sever 7 October 201915 November 2021

Wildfires affect watersheds in myriad ways, from reducing evapotranspiration to changing soil repellencies, but new research suggests impacts on snowpack and runoff are the most significant.

Photo of a coypu on a river bank
Posted inEditors' Vox

Invasive Species Drive Erosion in Aquatic Environments

by G. L. Harvey 18 September 201911 February 2022

The daily activities of mammals, reptiles, crustaceans, and fish influence the physical environment, with invasive burrowing species causing particular disruption in aquatic environments.

The south fork of the Eel River in California
Posted inResearch Spotlights

Answer to California Landscape Riddle Lies Underground

by Elizabeth Thompson 30 May 201915 November 2021

Scientists link vegetation mosaics in California to patterns of weathered bedrock.

Satellite image of the surface of Mars, with a 5-kilometer scale
Posted inResearch Spotlights

Detecting Carbonates on the Surface of Mars

by E. Underwood 16 May 201928 July 2022

A new study shows how a warm, wet climate weathered rocks on early Mars.

A jet of particles being ejected from Bennu
Posted inNews

Asteroid Visited by Mission Spews Rocks into Space

by Kimberly M. S. Cartier 22 March 201915 February 2022

Mission scientists observed 11 separate particle ejection events in a 1-month period. They are still trying to figure out what could be causing the particle plumes.

Jure landslide Nepal 2014
Posted inNews

Varying Impact of Earthquake- and Monsoon-Induced Landslides

by Katherine Kornei 25 February 20198 December 2022

Using nearly 50 years of satellite data and records stretching back millennia, scientists determine the relative frequency—and the erosional power—of monsoon- and earthquake-induced landslides in Nepal.

Water overflows the river channel in Sinks Canyon State Park, Wyoming
Posted inResearch Spotlights

The Unpredictability of Floods, Erosion, and Channel Migration

by Aaron Sidder 29 January 20196 March 2023

A new algorithm incorporates randomness into stream channel formation and suggests the approach represents regions with variable flood magnitudes better than standard models.

Mars Express north polar plains
Posted inScience Updates

Updates on Understanding Mars’s Recent and Present-Day Climate

by Serina Diniega, I. Smith and A. Bramson 23 January 20198 August 2022

Mars Workshop on Amazonian and Present-day Climate; Lakewood, Colorado, 18–22 June 2018

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RESEARCH SPOTLIGHTS
Earth’s Future
“How to Build a Climate-Resilient Water Supply”
By Rachel Fritts

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“How Do Atmospheric Rivers Respond to Extratropical Variability?”
By Sarah Kang

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Reviews of Geophysics
“Rare and Revealing: Radiocarbon in Service of Paleoceanography”
By Luke C. Skinner and Edouard Bard

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