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Geomorphology: fluvial

Yangtze River
Posted inResearch Spotlights

Researchers Home in on the Age of the Yangtze River

by Joshua Learn 10 March 2021

Findings on the river’s age also have implications for past landscape change in Asia.

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.

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 May 2020

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.

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.

Image of the Jezero delta on Mars
Posted inEditors' Highlights

How Fast Did an Ancient Martian Delta Form?

by F. Nimmo 23 April 202023 April 2020

Terrestrial meander migration rates are used to estimate a formation timescale of decades for Jezero delta on Mars.

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.

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