Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2017 Dec 7;122(12):2544–2573. doi: 10.1002/2017JE005324

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

©2017. The Authors.

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

PMC Copyright notice

HiRISE image of the linear dune area of the Bagnold Dune Field and a plot of ripple reorientation rates. (a) HiRISE image showing linear longitudinal ripples analyzed by Silvestro et al. [2016]. Note the secondary ripples migrating along a slip face of the linear dune are orthogonal to the orientation of the ripples at the crest. (b) The degree of ripple reorientation for different ripple migration rates. The timescales are based on Werner and Kocurek [1997] model of bed form reorientation through defect migration. Plot of the time to reorient a 10 m long ripple by varying degrees for different ripple migration rates. Images: HiRISE image: ESP_018854_1755_RED.