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Geomorphology: fluvial

Figure showing channel cross section geometry and erosion potential simulated with a comprehensive morphodynamic model at different stages of the channel evolution
Posted inEditors' Highlights

Stream Hydraulic Geometry 1.01

by Valeriy Ivanov 7 December 20201 December 2020

New research provides a theoretical explanation of channel cross section geometry dependence on flow rate that is commonly observed and described with power-laws.

Photographs of different environments in which sediment transport occurs: a river, the coast, and sand dunes.
Posted inEditors' Vox

From Blowing Wind to Running Water: Unifying Sediment Transport

by Thomas Pähtz, A. H. Clark, M. Valyrakis and O. Durán 18 May 202028 September 2021

Laboratory experiments and grain-scale computer simulations during the past decade have led to a more universal understanding of flow-driven sediment transport across flows in oil, water, and air.

Three-part image showing maps of the Missouri River near Council Bluffs, Iowa, and Omaha, Neb., in 1893 (left) and 2013 (middle) as well as a satellite image of the same area from 2019
Posted inOpinions

It’s Time to Revise Estimates of River Flood Hazards

by G. Sofia, E. I. Nikolopoulos and L. Slater 16 March 2020

Accurately assessing flood hazards requires a better understanding of the feedbacks between natural and human influences on the characteristics of rivers.

A stream running through a forest
Posted inNews

The Shape of Watersheds

by Hannah Thomasy 21 January 2020

Streams in flatter watersheds have carbon cycles more sensitive to temperature increases.

UC Berkeley professor of fluvial geomorphology Luna Leopold writes or draws on tablet during field work.
Posted inOpinions

Luna B. Leopold: Geoscience Pioneer

by K. Prestegaard 19 March 201929 September 2021

He conducted river morphology research based on systematic and reproducible measurements, pushing fluvial hydrology to become a more quantitative science.

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 2019

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

Posted inEditors' Vox

On Integrating Sedimentology and Hydrogeology in Streambeds

by D. Partington, C. T. Simmons, R. Therrien and P. Brunner 27 April 2018

A new modeling blueprint seeks to unify sedimentology, hydrology, and hydrogeology in the modeling of streambeds.

Researchers predict the movement of sediment in very steep streams.
Posted inResearch Spotlights

Boulders Limit Transport of Sand and Gravel in Steep Rivers

by A. Branscombe 6 January 201710 February 2017

Mountain rivers and streams actively reshape landscapes by eroding material from uplands and depositing it in lowlands. Scientists can now predict this transport in very steep streams.

Posted inResearch Spotlights

How a River Gets Its Width

by E. Betz 18 February 201523 September 2015

A new model of deposition and erosion on river banks allows scientists to study how the banks control their stream’s width.

Posted inResearch Spotlights

Using Rivers to Investigate Rock Uplift in Taiwan

by JoAnna Wendel 23 December 20147 September 2016

Researchers use change of slope in a dense river network to investigate rock uplift rates of Taiwan.

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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