Re: Dune gullies on Mars
Quite a nice image. The surface must be quite young given the lack of cratering.
This is a later image of an area that had young looking "rills" that some investigators have suggested are currently forming:
Dune field monitoring
http://ida.wr.usgs.gov/html/m19011/m1901170.html
SPRING DEFROSTING IN THE RUSSELL CRATER DUNE FIELD - RECENT SURFACE
RUNOFF WITHIN THE LAST MARTIAN YEAR ?
http://www.lpi.usra.edu/meetings/lpsc2002/pdf/2013.pdf
Anyone see any differences between the two images?
Looks like a good place to check using THEMIS images for changes, i.e., new rills in the area.
Bob Clark