Lunar Radar Sounder Observations of Subsurface Layers Under the Nearside Maria of the Moon

¹Graduate School of Science, Tohoku University, Sendai 980-8578, Japan. ²Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan. ³Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan. ⁴Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea. ⁵Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa 920-1192, Japan. ⁶Department of Space Science and Technology, Fukui University of Technology, Fukui 910-8505, Japan.