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. 


Image ID: 
V75357007 (View data in Mars Image Explorer)
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


PNG | JPEG (high res) | JPEG (reduced res) | PDF | TIFF