Exploration of Possible Early Martian Climate and Feasibility of Valley Network Formation by Rivers and Ice Sheets for Various Surface Pressure and H2 Mixing Ratio

Arihiro Kamada1, Takeshi Kuroda1, Takanori Kodama2, Yasumasa Kasaba3 and Naoki Terada4, (1)Tohoku University, Sendai, Japan, (2)The University of Tokyo, Tokyo, Japan, (3)Tohoku University, Department of Geophysics, Graduate School of Science, Sendai, Japan, (4)Tohoku University, Graduate School of Science, Sendai, Japan