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Takayuki Sakamoto
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Yujiro Ogawa
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Setsuya Nakada
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Author's Organization:Department of Earth and Planetary Sciences,Faculty of Science,Kyushu University:INA Corpolration Department of Earth and Planetary Science,Faculty of Science,Kyushu University:Institute of Geoscience,University of Tsukuba Department of Earth and Planetary Sciences,Faculty of Science,Kyushu University