Three-dimensional anatomy of a Cretaceous river avulsion

Three-dimensional analysis of a Cretaceous river avulsion node reveals the anatomy of channel evolution and provides insights into ancient fluvial processes on Earth and Mars

December 1, 2024 · C. M. Speed, Z. Sylvester, P. R. Durkin, P. P. Flaig

Meandering streamflows across landscapes and scales: a review and discussion

This introductory chapter reviews the history of research on meandering streams and presents a compilation of data on meander morphology.

July 11, 2024 · A. Finotello, P. R. Durkin, Z. Sylvester

The impact of post-cutoff bend curvature on channel kinematics in meandering rivers: an example from the Trinity River, Texas, USA

This paper investigates the relationship between post-cutoff bend curvature and channel kinematics in meandering rivers using Trinity River data.

June 1, 2024 · C. M. Speed, Z. Sylvester, P. D. Morris, D. Mohrig

A frozen history of meandering: Mapping and modeling ice-wedge polygons on point bars

A number of meandering rivers in the Arctic, especially in Siberia, have point bars with strikingly structured permafrost polygon patterns. We use a Unet-type convolutional neural network to map the polygons.

November 9, 2023 · Z. Sylvester

Autogenic translation and counter point bar deposition in meandering rivers

This paper explores the development of counter point bars in meandering rivers through autogenic translation processes.

May 1, 2021 · Z. Sylvester, P. R. Durkin, S. M. Hubbard, D. Mohrig

Point bars and counter point bars: Why is sediment deposited on the 'wrong' side of a meander bend?

The simplest definition of point bars is that they are sedimentary deposits forming on the inner, convex bank of river bends. [‘Inner’ and ‘convex’ bank means that, looking toward the river, the bank is curving around you.] Amadeus W. Grabau, an early ‘influencer’ in stratigraphy and sedimentary geology, published a beautiful drawing of how meanders grow, point bars evolve, and oxbow lakes form, more than a hundred years ago: Diagram illustrating the development of meanders in a river. From Grabau (1920). ...

March 13, 2021 · Zoltán Sylvester