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Marisa Repasch

Associate Editor, JGR: Earth Surface

Aerial photo of a glacier.
Posted inEditors' Highlights

The Pulsed Pace of Glacial Erosion

by Marisa Repasch 14 February 20257 February 2025

New data from Lago Argentino, Patagonia reveal that glacial erosion occurs in discrete pulses, which challenges previous ideas that erosion rates have increased over time due to climate change.

Diagram from the study.
Posted inEditors' Highlights

How Rock Type Shapes River Networks and Influences Landscape Evolution

by Marisa Repasch 10 February 20256 February 2025

A new study in Chile shows how small differences in rock type can drive large differences in erosion, vegetation, and river networks, illuminating the role of mineralogy in shaping landscapes.

Satellite images of 6 desert escarpments from around the world.
Posted inEditors' Highlights

Rainstorm Intensity Drives Desert Landscape Evolution

by Marisa Repasch 12 February 20248 February 2024

New mathematical models show that the persistence of near-vertical cliffs in arid landscapes is maintained by infrequent, but high-intensity rain storms.

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 view of a bridge, with the New Orleans skyline visible in the distance between the bridge and the water. A purple tint, a teal curved line representing a river, and the text “#AGU25 coverage from Eos” overlie the photo.

Features from AGU Publications

Research Spotlights

Denitrification Looks Different in Rivers Versus Streams

16 January 202616 January 2026
Editors' Highlights

Kyanite Exsolution Reveals Ultra-Deep Subduction of Continents

23 January 202622 January 2026
Editors' Vox

Bridging the Gap: Transforming Reliable Climate Data into Climate Policy

16 January 202616 January 2026
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