TY - RPRT TI - Seasonal H2O and CO2 ice cycles at the Mars Phoenix landing site: 1. Prelanding CRISM and HiRISE observations AU - Selby Cull AU - Raymond E. Arvidson AU - Michael T. Mellon AU - Sandra M. Wiseman AU - Roger N. Clark AU - Timothy N. Titus AU - Richard V. Morris AU - Patrick E. McGuire PY - 2010 DO - 10.1029/2009je003340 UR - https://pubs.usgs.gov/publication/70202252 ID - 70202252 ER -