This gives some more geographic detail on their modeling.  We assume the same physics apply there right?

These downhill flows, known as recurring slope lineae (RSL), often have been described as possibly related to liquid water. The new findings of hydrated salts on the slopes point to what that relationship may be to these dark features. The hydrated salts would lower the freezing point of a liquid brine, just as salt on roads here on Earth causes ice and snow to melt more rapidly. Scientists say it’s likely a shallow subsurface flow, with enough water wicking to the surface to explain the darkening

So let’s say they do get astronauts to Mars where should they go on the surface and what techniques should they use to examine things?  Should they take water ice and rock samples and try to send them back or perhaps something else?