*Tsubasa MIKI1, Shoichi KIYOKAWA1, Hiroshi NARAOKA1, Naoto TAKAHATA2, Akizumi ISHIDA2, Takashi ITO3, Minoru IKEHARA4, Kosei E. YAMAGUCHI5, Yuji SANO2
(1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, 2.Department of Chemical Oceanography, Atmosphere and Ocean Research Institute, University of Tokyo, 3.Teacher Training Course (Science Education), College of Education, Ibaraki University, 4.Research and Education Faculty, Center for Advanced Marine Core Research, Kochi University, 5.Department of Chemistry, Faculty of Science, Toho University; Astrobiology Institute, NASA)