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Masanobu Takano
Institute of Geoscience, University of Tsukuba.Japan Geocommunications Co. Ltd.
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Kazuo Okamoto
4-42-9 Kaminukushina, Higashi-ku, Hiroshima, 732-0032 Japan.
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Rei Nakashima
Institute of Geology and Geoinformation, GSJ.
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Seiichi Toshimitsu
Institute of Geology and Geoinformation, GSJ.
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Naotomo Kaneko
Institute of Geology and Geoinformation, GSJ.
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Junji Itoigawa
5125-4 Hiyoshi-cho, Mizunami, Gifu, 509-6251 Japan.