Hydraulic properties of and pressure-head dynamics in thick pyroclastic-fall deposits in Atsuma,Northern Japan: implications for the role of water in shallow landslides induced by the 2018 Hokkaido Eastern Iburi Earthquake     

Aoki  Toshiya  Katsura  Shin&#;ya  Koi  Takashi  Tanaka  Yasutaka  Yamada  Takashi 《Landslides》2022,19(8):1813-1824

Landslides - The 2018 Hokkaido Eastern Iburi Earthquake triggered numerous shallow landslides on slopes covered with thick pyroclastic-fall deposits. The landslides occurred more frequently on...  相似文献   

Diffusive Shock Acceleration of Electrons at an Interplanetary Shock Observed on 21 Feb 1994     

N. Shimada  T. Terasawa  M. Hoshino  T. Naito  H. Matsui  T. Koi  K. Maezawa 《Astrophysics and Space Science》1998,264(1-4):481-488

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Prolonged impact of earthquake-induced landslides on sediment yield in a mountain watershed: The Tanzawa region, Japan   总被引：5，自引：0，他引：5  

Takashi Koi  Norifumi Hotta  Ituro Ishigaki  Norimasa Matuzaki  Yoshimi Uchiyama  Masakazu Suzuki 《Geomorphology》2008,101(4):692-702

To determine for how long a landslide affects sediment discharge, the sediment yields of 15 check-dam basins were compared with the time series of landslide distributions in a mountain basin in the Tanzawa region, central Japan. The distribution of sediment yield was quantitatively estimated from deposition in the sediment pools of check dams. The relationship between the landslide history and sediment discharge in the Nakagawa River basin was examined for an approximately 80-year period. Two major landslide events occurred during this period: the 1923 Kanto Earthquake and the 1972 disaster caused by heavy rainfall. The resulting trend in sediment discharge of the whole basin, estimated using reservoir sedimentation in the Miho Dam at its base, was nearly constant, with high sediment discharge (2897 m³ km^− 2 yr^− 1) in the intervening quarter-century, despite the recovery of vegetation on landslide areas in this period. Comparisons of the landslide distributions resulting from the two disasters, the sediment yields of check-dam basins, and the sediment discharge of the whole basin indicate that recent sediment discharge contains landslide debris that was originated by the Kanto Earthquake that occurred over 80 years ago. Thus, to understand high sediment discharge, it is essential to investigate not only the current basin condition and recent events, but also the landslide history of the basin for at least the previous 100 years.  相似文献   

Search for an astronomical site in Kenya (SASKYA) using climate reanalyses and high-resolution meteorological model data     

Edward Graham  Richard Vaughan  David A. H. Buckley  Koi Tirima 《Theoretical and Applied Climatology》2016,124(1-2):425-449

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