IDENTIFICATION OF LANDSLIDE LOCALITIES OCCURRED IN 1889 (MEIJI-22) BASED ON KOAZA NAMES IN YOSHINOGUN-SUISAISHI(PART 1; NISHI-TOTSUKAWA)

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  • 吉野郡水災誌小字地名にもとづく1889(明治22)年十津川災害崩壊地の比定(その1;西十津川)
  • 吉野郡水災誌小字地名にもとづく1889(明治22)年十津川災害崩壊地の比定-1-西十津川
  • ヨシノグン スイサイシ コアザ チメイ ニ モトズク 1889 メイジ 22

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Abstract

A large number of landslides were triggered by typhoon rain in 1889 over Totukawaarea, Nara Prefecture, resulting a serious hazard. Their localities are identified exactly basedon the Koaza name in the histrical record on the Nishi-Totsukawa. Landslides larger than4x10 4 m2 in area have been shown on topographic map in 1911(Meiji-44). Topographic featuresof gigantic landslides are still recongnized clearly on the aerial photo in 1953 taken even 65years after the hazard. However, total number 600 of larger landslides in the record isgreater than the probable number 200 which was estimated by frequency-magnitudedistribution of landslides and by photo-interpretation of landslide topography.

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