re: What will Mars Reconnaissance Orbiter find?
Jeffrey Kargel who is a leading expert on Mars glaciology the discusses the possibility of current liquid water brines on Mars here:
MARS AS A SALT-, ACID-, AND GAS-HYDRATE WORLD.
J.S. Kargel and Giles M. Marion, USGS Astrogeology (2255 N. Gemini Dr., Flagstaff, AZ 86001, ****@usgs.gov), Desert Research Inst. (Reno, NV)
Lunar and Planetary Science XXXV (2004) 1965.pdf
http://www.lpi.usra.edu/meetings/lpsc2004/pdf/1965.pdf
Bob Clark
