作者: Katsuhiro Kikuchi , Ken-ichi Sakurai , Masahiro Kajikawa , Yoshifumi Yasuda
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摘要: Ken-ichi SAKURAI*, Yoshifumi YASUDA*, Masahiro KAJIKAWA**, Katsuhiro KIKUCHI*** *Earth Science Laboratory, Hokkaido University of Education, Asahikawa 070-8621, Japan **Department Civil & Environmental Engineering, Faculty Engineering Resource Science, Akita University, 010-0852, ***Division Earth and Planetary Graduate School Sapporo 060-0810,