*Mariko Iijima¹, Ko Yasumoto², Jun Yasumoto³, Akira Iguchi¹, Mina Hirose⁴, Atsushi Suzuki¹, Shugo Watabe² (1.National Institute of Advanced Industrial Science and Technology, 2.School of Marine Biosciences, Kitasato University, 3.Faculty of Agriculture, University of the Ryukyus, 4.Tropical Technology Plus)

*Ko Yasumoto¹, Mariko Iijima², Jun Yasumoto³, Takashi Nakamura⁴, Akira Iguchi², Mina Hirose⁵, Shugo Watabe¹ (1.Kitasato University School of Marine Biosciences, 2.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 3.Department of Regional Agricultural Engineering, Faculty of Agriculture, University of the Ryukyus, 4.Faculty of Science, University of the Ryukyus, 5.Tropical Technology Plus)

*Jun Yasumoto¹, Ko Yasumoto², Kazumi Asai³, Chris Leong⁴, Mariko Iijima⁵, Takahiro Hosono⁷, Ryuichi Shinjo⁴, KE-HAN SONG⁶, Shinji Nakaya⁸, Akira Iguchi⁵, Bam H.N. Razafindrabe¹, Makoto Taniguchi⁴ (1.University of the Ryukyus, Faculty of Agriculture, 2.School of Marine Biosciences, Kitasato University, 3.GEO SCIENCE LABORATORY Co., Ltd., 4.Research Institute for Humanity and Nature, 5.National Institute of Advanced Industrial Science and Technology (AIST), 6.Graduate School of Engineering and Science, University of the Ryukyus, 7.International Research Organization for Advanced Science and Technology, Kumamoto University, 8.Faculty of Engineering, Shinshu University)

*RYUSEI MINAMI¹, Jun Yasumoto¹, Ko Yasumoto², Chris Leong⁴, Mariko Iijima⁵, Takahiro Hosono⁶, Ryuichi Shinjo⁴, KE-HAN SONG³, Makoto Taniguchi⁴, Masahiro Takahasi⁸, Go Miura⁷, Yousuke Sawano⁹, Yasuhiro Tahara⁹ (1.University of the Ryukyus, Faculty of Agriculture, 2.School of Marine Biosciences, Kitasato University, 3.Graduate School of Engineering and Science, University of the Ryukyus, 4.Research Institute for Humanity and Nature, 5.National Institute of Advanced Industrial Science and Technology (AIST), 6.International Research Organization for Advanced Science and Technology, Kumamoto University, 7.Terra Corporation, 8.NIPPON KOEI CO. LTD, 9.Geosphere Environmental Technology Corp.)

*Kakeru Matsuoka¹, Jun Yasumoto¹, Shinji Nakaya², Meito Yamada¹, Nao Kinjo¹, Tetsuo Yasutaka³ (1.University of the Ryukyus, 2.Shinshu University, 3.National Institute of Advanced Industrial Science and Technology (AIST))

KE-HAN SONG¹, *Ryuichi Shinjo^3,2, Yuto Ito¹, Yumi Moromizato³, Jun Yasumoto⁴ (1.Graduate School of Engineering and Science, University of the Ryukyus, 2.Research Institute for Humanity and Nature, 3.Department of Physics and Earth Sciences, University of the Ryukyus, 4.Department of Regional Agriculture Engineering, University of the Ryukyus)