Barchan dunes in two dimensions: Experimental tests for minimal models
Groh C, Wierschem A, Aksel N, Rehberg I, Kruelle CA (2008)
Publication Type: Journal article, Original article
Publication year: 2008
Journal
Book Volume: 78
Pages Range: 021304
Journal Issue: 2
URI: http://link.aps.org/doi/10.1103/PhysRevE.78.021304
DOI: 10.1103/PhysRevE.78.021304
Abstract
A well-defined two-dimensional single barchan dune under the force of a shearing water flow is investigated experimentally. From an initially prepared triangular heap a rapid relaxation to a steady-state solution is observed with constant mass, shape, and velocity. This attractor exhibits all characteristic features of barchan dunes found in nature, namely a gently inclined windward side, crest, brink, and steep lee face. The relaxation time towards the steady state increases with mass. For small dunes we find significant deviations from a fixed height-length aspect ratio. As predicted by recent theoretical models, the migration velocity scales reciprocal to the length of the dune. © 2008 The American Physical Society.
Authors with CRIS profile
Involved external institutions
Germany (DE)How to cite
APA:
Groh, C., Wierschem, A., Aksel, N., Rehberg, I., & Kruelle, C.A. (2008). Barchan dunes in two dimensions: Experimental tests for minimal models. Physical Review E, 78(2), 021304. https://doi.org/10.1103/PhysRevE.78.021304
MLA:
Groh, Christopher, et al. "Barchan dunes in two dimensions: Experimental tests for minimal models." Physical Review E 78.2 (2008): 021304.
BibTeX: Download