How Dunes Change Over Time (IMAGE)

University of Arizona

How Dunes Change Over Time

Caption

Multiple bedforms -- ripples and dunes -- in the north polar region are seen here migrating over the course of five Mars years. A combination of wind action, frozen carbon dioxide and water ice reworks these dunes as the seasons change.

Credit

NASA/JPL/University of Arizona

Usage Restrictions

This visual may only be used in conjunction with reporting on or posting of this news release. Credit must be given as indicated.

License

Licensed content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.