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erosion & weathering

Sedimentary rocks exposed to weathering
Posted inNews

Weathering of Rocks Can Release Carbon Dioxide

Rachel Crowell, Science Writer by Rachel Crowell 28 November 202329 November 2023

New research upends the notion that the weathering of rocks mainly removes CO2 from the atmosphere. Rocks can also be carbon sources, releasing as much CO2 as Earth’s volcanoes.

Field photos and elevation diagram of study area.
Posted inEditors' Highlights

Revealing a Catchment’s Erosional Secrets: Grain Size Matters

by Mikaël Attal 15 November 202313 November 2023

A provenance study with 699 new samples from 12 different sediment grain sizes (from sand to boulder) shows that each fraction originates from distinct parts of a mountain catchment in California.

A mound of clay in a flow tunnel is eroded by water.
Posted inNews

Did These Curious Rock Formations Inspire the Great Sphinx?

by Nathaniel Scharping 3 November 20233 November 2023

New research says it’s plausible the Great Sphinx started life as a geomorphological oddity known as a yardang.

Diagram from the paper
Posted inEditors' Highlights

Desert Landscape Evolution Controlled by Storm Intensity

by T.C. Hales 12 October 202312 October 2023

A new study in the Negev Desert finds that long-term erosion of a desert escarpment occurs in drier areas where intense storms are most frequent.

Foto de una duna de arena cubierta con plantas en la playa
Posted inNews

Las plantas construyen dunas pero pueden acelerar la erosión durante tormentas fuertes

by Carolyn Wilke 5 September 20235 September 2023

Cuando las olas golpean las dunas con vegetación, se forman áreas anegadas frente a las plantas, lo que facilita que la arena sea arrastrada por la corriente más fácilmente. Sin embargo, las plantas aún son necesarias para formar las dunas en primera instancia.

Posted inThe Landslide Blog

An interesting erosive event in the Socavón Cochoa area of Viña del Mar, Chile

by Dave Petley 24 August 202324 August 2023

Dramatic erosion of a sand dune in Viña del Mar, Chile appears to be related to maintenance of a drainage pipe.

Une image sous-marine montre un scientifique plongeur forant dans un grand dôme de corail
Posted inResearch Spotlights

La chimie du corail reflète l’expansion économique d’Asie du Sud-Est

by Rebecca Dzombak 22 August 202322 August 2023

Les sols en érosion en raison du développement économique ont transporté des sédiments en mer de Chine méridionale… et jusque dans le squelette corallien.

Photo of a riverbank in Alaska.
Posted inEditors' Highlights

Frozen Riverbanks May Erode Faster in a Warming Arctic

by Marisa Repasch 16 August 202315 August 2023

Frozen flume experiments reveal the sensitivity of permafrost riverbank erosion to water temperature, bank roughness, and pore-ice content.

A photo of a sand dune covered with plants on a beach
Posted inNews

Plants Build Dunes but Can Speed Erosion During Severe Storms

by Carolyn Wilke 28 July 20235 September 2023

When waves hit vegetated dunes, waterlogged areas form in front of plants, making for sand that’s easier to wash away. But you still need plants to form dunes in the first place.

Mosaic of four images of Comet 67P/Churyumov-Gerasimenko
Posted inEditors' Highlights

Dancing Dust on Comet 67P/Churyumov-Gerasimenko

by Naomi Murdoch and Laurent G. J. Montési 19 July 202318 July 2023

Cometary activity moves sediments over the surface of 67P/Churyumov-Gerasimenko, with long-term sinks near the poles of the comet.

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