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Hideo Sakai
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Minoru Funaki
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Tomonori Sato
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Yutaka Takigami
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Harutaka Sakai
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Kimio Hirooka
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Author's Organization:Department of Earth Sciences,Faculty of Science,Toyama University National Institute of Polar Research Department of Earth Sciences,Faculty of Science,Toyama University Kanto Gakuen University Graduate School of Social and Cultural Studies,Kyushu University Department of Earth Sciences,Faculty of Science,Toyama University