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erosion & weathering

Sediment swirls and mixes with water in a brown slurry
Posted inResearch Spotlights

Experimenting with Underwater Sediment Slides

by Terri Cook 8 October 202021 July 2022

Sediment-laden currents caused by breaching flow slides are hazardous to flood defenses and seabed infrastructure. New research shows that these phenomena must be accounted for in erosion simulations.

Hydration (in blue) on the lunar surface as observed from the NASA Infrared Telescope Facility overlain on an image of the Moon
Posted inResearch Spotlights

A Clearer Look at Lunar Surface Hydration

by Morgan Rehnberg 29 September 202028 July 2022

Independent ground-based observations of the Moon confirm prior spacecraft observations that hydration at the lunar surface varies with temperature.

Four faces carved in granite stand above an apron of crushed rock overlooking state flags along the Avenue of Flags at Mount Rushmore National Memorial.
Posted inFeatures

Mount Rushmore’s Six Grandfathers and Four Presidents

by Mary Caperton Morton 3 September 202014 October 2021

Living in Geologic Time: How long will it take for erosion to erase Mount Rushmore?

Photographs of two different locations on the surface of Mars showing a small impact crater (top) and a similarly sized hollow (bottom)
Posted inEditors' Highlights

Self-Repairing Blemishes on the Surface of Mars

by B. J. Thomson 18 August 20206 March 2023

A new study of small impact craters at Mars landing sites suggests that active processes degrade and infill depressions at similar rates in locations separated by thousands of kilometers.

An image depicting bright-toned sand ripples in Proctor Crater on Mars.
Posted inResearch Spotlights

Megaripple Migration Offers Insights into Martian Atmosphere

by Rachel Fritts 31 July 20208 March 2022

The movement of large sand ripples, documented for the first time, suggests Mars is windier than we thought.

Picture of collapsed corner of four-story apartment
Posted inNews

The Ticking Time Bomb of Arctic Permafrost

by Jenessa Duncombe 24 June 202015 November 2021

Arctic infrastructure is under threat from thawing permafrost.

Charts showing relationship between catchment-averaged erosion rate and landscape steepness index
Posted inEditors' Highlights

Meteoric 10Be Reveals Lithological Control on Erosion Rates

by Mikaël Attal 1 June 202026 January 2023

New meteoric 10Be data quantify fast erosion of slates in the Zhuoshui River catchment in Taiwan and demonstrate the influence of lithology on landscape steepness.

Posted inEditors' Highlights

Arctic Coast Erosion Linked to Large-Scale Climate Variability

by J. Sprintall 10 April 202015 November 2021

Changes in rates of Arctic coastal erosion detected from multi-decadal measurements are attributed to the shorter duration in the winter sea ice coverage and large-scale changes in the wind patterns.

Satellite view of the Nili Patera dune field on Mars in 2014
Posted inResearch Spotlights

Mapping Martian Dunes from Orbit

by David Shultz 24 March 202028 July 2022

New research shows how fast the sands shift on the Red Planet and how useful imagery from different orbiting cameras can be in studies of Mars’s dunes.

Snout of a mountain glacier with terminal moraine
Posted inNews

Precipitation Plays a Key Role in Glacial Erosion

by Javier Barbuzano 10 March 202024 February 2022

After comparing the climatic conditions at dozens of glaciers worldwide, researchers find that precipitation, not temperature, is the leading environmental factor driving glacial erosion.

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“How to Build a Climate-Resilient Water Supply”
By Rachel Fritts

EDITORS' HIGHLIGHTS
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By Sarah Kang

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

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