Landslides and precipitation characteristics during the typhoon Lionrock in Iwate prefecture, Japan

Thapthai Chaithong, Daisuke Komori, Yuto Sukegawa, Yoshiya Touge, Yuta Mitobe, Satoshi Anzai

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In August 2016, the typhoon Lionrock made landfall on Japan's northeastern coast and caused floods and landslides. Lionrock brought heavy precipitation to Japan, which Shimotokusari station (33201) recorded 24-hour rainfall amount over 200 mm and the peak rainfall intensity was approximately 65 mm/hr. The total cost of damage within the Iwate prefecture is over 700 million dollars, moreover, 20 lives were lost and 4 people missing. Therefore, the objective of this paper is to present the results of the post-disaster investigation, including, the back-analysis of landslides and precipitation due to the typhoon Lionrock. The rainfall and landslides relationship is significantly important for rainfall intensity-duration threshold. For this typhoon, the empirical rainfall intensity-duration threshold has been derived as I = 20.24D-0.33. The slope failure could be broadly categorized into the debris flow, surficial erosion, and soil slide, moreover, occurred on slopes ranging from 19 to 58 degrees.

Original languageEnglish
Pages (from-to)109-114
Number of pages6
JournalInternational Journal of GEOMATE
Volume14
Issue number44
DOIs
Publication statusPublished - 2018

Keywords

  • Critical rainfall
  • Intensity-duration threshold
  • Landslides
  • Rainfall
  • Tropical cyclone
  • Typhoon

ASJC Scopus subject areas

  • Environmental Engineering
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology
  • Soil Science

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