Streamwise Dissolution Patterns Created by a Flowing Water Film
Fluid Dynamics
2020-11-10 v1 Geophysics
Abstract
The dissolution of rocks by rainfall commonly generates streamwise parallel channels, yet the occurrence of these natural patterns remains to be understood. Here, we report the emergence in the laboratory of a streamwise dissolution pattern at the surface of an initially flat soluble material, inclined and subjected to a thin runoff water flow. Nearly parallel grooves about 1 mm wide and directed along the main slope spontaneously form. Their width and depth increase continuously with time until their crests emerge and channelize the flow. Our observations may constitute the early stage of the patterns observed in the field.
Cite
@article{arxiv.2011.03821,
title = {Streamwise Dissolution Patterns Created by a Flowing Water Film},
author = {Adrien Guérin and Julien Derr and Sylvain Courrech du Pont and Michael Berhanu},
journal= {arXiv preprint arXiv:2011.03821},
year = {2020}
}
Comments
6 pages, 4 figures + Supplemental Material 15 pages 12 figures