Investigations on mechanism of landslides during the 2016 kumamoto earthquake, japan

H. Hazarika, W. O. Sumartini, T. Kokusho, Y. Kochi, S. Ishibashi, S. Yamamoto, D. Matsumoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper deals with landslides that occurred during the 2016 Kumamoto Earthquake, Japan in a moderately inclined slope (inclination: 10 to 15 °), which is composed of volcanic deposits. The objective of this research is to elucidate the mechanism of the landslides in the gentle slope from the perspectives of geology and geotechnics of volcanic soils. To that end, an integrated approach was adopted: collections of basic data through field survey, obtain borehole data of the failed and intact parts of the slope, conducting resistivity survey at the crown of the slope and cyclic testing of collected soil samples (disturbed and undisturbed) in the laboratory. Liquefaction of pumice layer situated above a non-permeable tephra layer was found to be the primary cause of such extensive landslides in the gentle slope.

Original languageEnglish
Title of host publicationEarthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019
EditorsFrancesco Silvestri, Nicola Moraci
PublisherCRC Press/Balkema
Pages821-832
Number of pages12
ISBN (Print)9780367143282
Publication statusPublished - Jan 1 2019
Event7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019 - Rome, Italy
Duration: Jan 17 2019Jan 20 2019

Publication series

NameEarthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019

Conference

Conference7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019
CountryItaly
CityRome
Period1/17/191/20/19

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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  • Cite this

    Hazarika, H., Sumartini, W. O., Kokusho, T., Kochi, Y., Ishibashi, S., Yamamoto, S., & Matsumoto, D. (2019). Investigations on mechanism of landslides during the 2016 kumamoto earthquake, japan. In F. Silvestri, & N. Moraci (Eds.), Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019 (pp. 821-832). (Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019). CRC Press/Balkema.