Ripple Pattern on Martian surface

[neilparker62]

TL;DR

Ripple pattern noted during parachute descent

See graphic below. Are these ripples just wind-formed sand dunes or the remnant of an ancient (possibly catastrophic proportion) flood event? The ripples appear to emanate from a structure to the left if you look earlier in the descent video.

 

[Baluncore]

Are these ripples just wind-formed sand dunes or the remnant of an ancient (possibly catastrophic proportion) flood event?

Water runs downhill and cuts deep valleys. The ripples are the same on the flat areas as in the old crater. That suggests it was not water that caused it.

The wind blows both up hill and down, across any flat surface. The dunes in the top left are trailing their ends due to wind being from top right to bottom left. Notice the area free of dunes in the old crater, it is sheltered by the crater wall. The wind again appears to have blown from the top right to the bottom left.

 

[davenn]

Summary:: Ripple pattern noted during parachute descent

Are these ripples just wind-formed sand dunes or the remnant of an ancient (possibly catastrophic proportion) flood event?

Wind blown sand dunes, you will find them all over the Martian surface