Seismic observations of a deep-seated landslide site in Sambagawa Belt

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Other Title
  • 三波川帯における深層崩壊斜面の地震動計測
  • ―Case study at Toujiyama, Otoyo, Kochi, Japan
  • ―高知県大豊町トウジ山の地すべりを事例として―

Abstract

<p>  To reveal the mechanism of deep-seated catastrophic landslides (DCLs) by large subduction-zone earthquakes and inland earthquakes in accretionary complexes, including metamorphic rocks, we undertook seismic observations and detailed geological mapping at Toujiyama, Shikoku. In this area, DCLs have been repeatedly formed by large earthquakes and heavy rainfall. As a result, seismic amplification characteristics and geological causes were obtained in this slope.</p>

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