Crater Dunes

Scaled Image

Image Credit: NASA/JPL/ASU

About this image

This VIS image shows part of the floor of an unnamed crater in Noachis Terra. Individual dunes and a large sand sheet with surface dune morphology fill a large area of the crater floor. The amount of sand controls the formation of dunes. Regions with only a limited amount of sand will contain small individual dunes. As more sand enters a region the dunes will grow larger. When large amounts of sand fill a region, individual dunes will coalesce into larger and larger dunes, eventually completely covering the surface as a sand sheet with dune crest features on the top. Dunes often occur in craters on Mars.

Please see the THEMIS Data Citation Note for details on crediting THEMIS images. 


2018-12-10 03:58
Tue, 2019-03-19
1024 pixels (17 km)
3648 pixels (62 km)
0.017009 km/pixel
0.0171562 km/pixel


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