Windy Changes for Active Dune Field on Mars - Nili Patera is one of the most active dune fields on the planet. By monitoring the sand dune changes, we can determine how winds vary seasonally and year-to-year. This observation is one of the more recent Nili images, acquired on March 1, 2014. Compared to an image acquired on Nov. 22, 2012, changes are obvious. The ripples on the dunes have moved, as well some of the dune boundaries, such as the one at upper left. New landslides on the central dune's lee face are apparent.
Image Credit: NASA/JPL-Caltech/Univ. of Arizona
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