Abstract
Many landslides have been caused by large-scale earthquakes in volcanic mountain areas. The Iwate-Miyagi Nairiku Earthquake (IMN Earthquake) of 2008 is one such example. To constrain the effect of volcanic deposits on large earthquake-induced accelerations that trigger landslides, an earthquake response analysis that considered a range of geological conditions was carried out. The results show that the thickness and position of soft rock, such as a layer of weakly welded tuff, affected the intensity and amplification of seismic acceleration on the slope.
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Acknowledgments
Field investigations were carried out with the cooperation of the Forest Agency of Japan and Forestry and Forest Products Research Institute. Seismic observation data were obtained from KiK-net of the National Research Institute for Earth Science and Disaster Prevention (NIED).
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Asano, S. (2013). Effect of the Thickness of Geological Strata on Seismically-Induced Slope Failure in IMN Earthquake, 2008 in Japan. In: Margottini, C., Canuti, P., Sassa, K. (eds) Landslide Science and Practice. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31427-8_33
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DOI: https://doi.org/10.1007/978-3-642-31427-8_33
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