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*IZUMI SAKAMOTO
Department of Marine Mineral Resources, School of Marine Science and Technology, Tokai University
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MITSUO ISHIDA
Department of Information and Communication, School of High Technology for Human Welfare, Tokai University
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TOSHIYA FUJIWARA
Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology
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N TAKAHASHI
Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology