*Kosuke Noborio¹, Shinsuke Aoki¹, Shujiro Komiya⁴, Fumiyoshi Kondo³, Yuki Ito¹, Toshihiro Doi¹, Mitsuo Uematsu², Ryo Matsumoto¹ (1.Meiji University, 2.The University of Tokyo, 3.Japan Coast Guard Academy, 4.Max Planck Institute for Biogeochemistry)

*Yoshihiro Kakizaki¹, Glen Snyder¹, Manabu Tanahashi¹, Naoto Ishida², Ryo Matsumoto² (1.Gas Hydrate Research Laboratory, Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, 2.Department of Social Systems and Civil Engineering, Graduate School of Engineering, Tottori University)

*Glen Snyder¹, Ryo Matsumoto¹, Naizhong Zhang¹, Yohey Suzuki², Yoshihiro Kakizaki², Yuji Sano³, Naoto Takahata³, Kentaro Tanaka³, Takumi Imajo⁴, Hitoshi Tomaru⁵, Aya Iguchi⁵ (1.Gas Hydrate Research Laboratory, Meiji Univeristy, 2.Graduate School of Science, The University of Tokyo, 3.Atmosphere and Ocean Research Institute, The University of Tokyo, 4.Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 5.Department of Earth Sciences, Chiba University)

*Mamata Tsuyoshi¹, Hitoshi Tomaru¹, Ryo Matsumoto² (1.Graduate School of Science/Faculty of Science, Department of Earth Sciences, Chiba University, 2.Gas Hydrate Laboratory, Meiji University)

*Takeshi Oi¹, Ryo Matsumoto¹ (1.Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University)

*Takaya Shimono¹, Ryo Matsumoto¹ (1.Gas Hydrate Research laboratory, Meiji University)

*Aya Iguchi¹, Hitoshi Tomaru¹, Tatsuya Motegi², Naoto Ishida², Ryo Matsumoto³ (1.Graduate School of Science and Engineering, Chiba University, 2.Graduate School of Engineering,Tottori University, 3.Gas Hydrate Research Laboratory Meiji University)

*Shiro Ohkawa¹, Ryo Matsumoto¹ (1.Gas Hydrate Laboratory, Meiji University)

*Naoto Ishida¹, Hitoshi Tomaru², Takao Ebinuma¹, Ryo Matsumoto³ (1.Social Systems and Civil Engineering, Graduate School of Engineering, Tottori University, 2.Chiba University, 3.Meiji University)

*Shinsuke Aoki¹, Shujiro Komiya², Kosuke Noborio³, Ryo Matsumoto⁴ (1.Graduate School of Agriculture, Meiji University, 2.Max Planck Institute for Biogeochemistry, 3.School of Agriculture, Meiji University, 4.Gas Hydrate Laboratory, Meiji University)

*Mahsa Saeidi Ortakand¹, Tsuyoshi Mamada², Ryo Matsumoto¹ (1.Meiji Univ., 2.Chiba Univ.)

*Mamata Tsuyoshi¹, Hitoshi Tomaru¹, Ryo Matsumoto² (1.Graduate School of Science/Faculty of Science, Department of Earth Sciences, Chiba University, 2.Gas Hydrate Laboratory, Meiji University)

*Takeshi Oi¹, Ryo Matsumoto¹ (1.Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University)

*Takaya Shimono¹, Ryo Matsumoto¹ (1.Gas Hydrate Research laboratory, Meiji University)

*Aya Iguchi¹, Hitoshi Tomaru¹, Tatsuya Motegi², Naoto Ishida², Ryo Matsumoto³ (1.Graduate School of Science and Engineering, Chiba University, 2.Graduate School of Engineering,Tottori University, 3.Gas Hydrate Research Laboratory Meiji University)