Evidence for Liquid Surface Water on Mars
Black streaks related to possible ponds
1.2 - 1
Class: sp
Source: 7707
Comment: The famous "Aerobraking Crater" of 1997. Gullies at the rim and a filled crater floor strongly point to a pond-like object. This image was subject to several press releases and and the famous NASA Mars-Water press conference in summer 2000.
It was a high priority target of MOC and several later images show seasonal changes of the pond and defrosting albedo marks somewhat like in 1.1 - 11. This may indicate that the pond was not only filled by the gullies of the rim but by water pressed up from below, too.



1.2 - 2
Class: sp
Source: fha00810
Comment: What first looks like shadow is actually much darker. The histogram operation in A` shows dark at saturation and surrounded by a less dark seam. At B the dark area seems to originate at some points (lower arrows) with evaporite ridges. Rightmost picture shows locations of A, B, and C.


1.2 - 3
Class: sp
Source: sp239903
Comment: topography unclear, but without visible inflow dark area could be ground of temporary present lake or near-surface water.


1.2 - 4
Class: sp
Source: sp245405
Comment: see above


1.2 - 5
Class: X
Source: fha01278
Comment: The circular basin of an (impact?) crater with a dark channel and some outflow streaks below.