Near-Surface Ice Likely Cause of Thermal Anomaly in Martian North Polar Erg

N. E. Putzig 1, M. T. Mellon 2, K. E. Herkenhoff 3, R. J. Phillips 1, B. J. Davis 1, and K. J. Ewer 4. 1 Southwest Research Institute, Planetary Science Directorate, Boulder, CO (contact: nathaniel@putzig.com); 2 University of Colorado, Laboratory for Atmospheric and Space Physics, Boulder, CO; 3 United States Geological Survey, Astrogeology Team, Flagstaff, AZ; 4 Embry-Riddle Aeronautical University, Prescott, AZ.