Field notes in the city

ikenbot:

Winds of Mars Transform Sand Dunes Into Art

Image Credit: NASA/JPL-Caltech/Univ. of Arizona

This enhanced-color image shows sand dunes trapped in an impact crater in Noachis Terra, Mars. Dunes and sand ripples of various shapes and sizes display the natural beauty created by physical processes. The area covered in the image is about six-tenths of a mile (1 kilometer) across.

Sand dunes are among the most widespread wind-formed features on Mars. Their distribution and shapes are affected by changes in wind direction and wind strength. The image by the High Resolution Imaging Science Experiment (HiRISE) camera on Mars Reconnaissance Orbiter (MRO) was taken on Nov. 29, 2011.

(via geologyrocks)