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YOSHIKUNI HIROI
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MASASHI YOKOSE
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TOMORU OBA
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SATORU KISHI
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TSUYOSHI NOHARA
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AKIRA YAO
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Author's Organization:Department of Earth Sciences,Faculty of Science,Chiba University Department of Earth Sciences,Faculty of Science,Chiba University Department of Earth Sciences,Faculty of Science,Chiba University Department of Earth Sciences,Faculty of Science,Chiba University Department of Geosciences,Faculty of Science,Osaka City University Department of Geosciences,Faculty of Science,Osaka City University