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erosion & weathering

Image of dark linear features on the surface of Mars known as recurring slope lineae
Posted inEditors' Highlights

After the Dust Cleared: New Clue on Mars’ Recurring Slope Lineae

by A. Deanne Rogers 8 April 20212 February 2022

An imaging campaign after the 2018 planet-encircling dust storm on Mars revealed a significant increase in detections of enigmatic recurring slope lineae and new insights into how they might form.

硅藻进化到用镉来替代锌
Posted inResearch Spotlights

硅藻是如何进化到利用有毒金属镉代替锌的?

by Sarah Stanley 1 April 20213 May 2022

网络分析表明,锌和镉硫化物在地质史上同步风化,在锌缺乏的情况下,镉可以作为光合途径的合适替代品。

Diatoms evolved to substitute cadmium for zinc.
Posted inResearch Spotlights

How Did Diatoms Evolve to Swap Zinc for the Toxic Metal Cadmium?

by Sarah Stanley 17 March 20213 May 2022

New network analysis suggests that zinc and cadmium sulfides weathered simultaneously in geological history, making cadmium a suitable substitute in photosynthetic pathways when zinc was scarce.

Looking out from inside Lower Antelope Canyon, with the sky near the top of the frame. Characteristic layering in the sandstone is visible.
Posted inResearch Spotlights

The First Angstrom-Scale View of Weathering

by Kate Wheeling 15 March 202113 October 2022

Researchers observe how water vapor and liquid alter sedimentary rocks through physical and chemical processes.

A close-range view of coastal cliffs with adjacent beach. A sign warns visitors of rocks falling from above.
Posted inNews

Weighing Inputs of Waves and Precipitation to Coastal Erosion

by Jady Carmichael 19 February 202115 November 2021

Conducting weekly lidar surveys of coastal cliffs for 3 years enabled a California team of coastal erosion researchers to quantify and separate marine effects from subaerial effects.

Watery mud accumulates between rows of crops.
Posted inNews

European Colonists Dramatically Increased North American Erosion Rates

by Rachel Fritts 11 January 202124 February 2022

Around 200 years ago, when conversion of land for agriculture became more widespread, the amount of sediment accumulating in riverbeds across the continent jumped tenfold.

A small boulder in the desert attached to sensors
Posted inResearch Spotlights

Warmer Climates Speed Breakdown of Rocks

by Jack Lee 6 January 20216 January 2022

Researchers listened to boulders for thousands of hours to investigate how they weathered.

Neat rows of crops grow between rows of trees
Posted inNews

Using Nuclear Fallout to Measure Soil Erosion in Tunisia

by Issa Sikiti da Silva 5 November 202028 January 2022

Cesium-137 acts as a tracer to evaluate the efficiency of conservation methods.

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.

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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
AGU Advances
“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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