Hydrogen Isotopes Record the History of the Martian Hydrosphere and Atmosphere

ATMOSPHERE. T. Usui1, 2, J. I. Simon3, J. H. Jones4, H. Kurokawa5, M. Sato6, C. M. O’D. Alexander7, J. Wang7. 1Dept. of Earth & Planet. Sci., Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8551, Japan (tomohirousui@geo.titech.ac.jp), 2LPI, USRA, Houston, TX 77058, USA, 3Center for Isotope Cosmochemistry and Geochronology, ARES NASA/JSC, Houston, TX 77058, USA, 4ARES, NASA/JSC, TX 77058, USA. 5Nagoya Univ., Nagoya, Aichi 464-8602, Japan, 6Dept. of Environmental Changes, Kyushu Univ., Fukuoka 819-0395, Japan, 7Dept. of Terrestrial Magnetism, Carnegie Institute of Washington, Washington, DC 20015-1305, USA.