Here's what the researcher said, in the article. BUT - - -
"The sharply defined endpoints of the dark streaks, Motazedian said, imply that the flows end where their liquid source is exhausted, having been consumed in a coating of surface dust and soaking into the ground."
I'm sure your psychic abilities are good, too.
The lady is at the University of Oregon. I'm positive she'd enjoy your "take" on it if you'd be kind enough to share.
Arf (and they accuse me of not reading! Heh, heh.)