Abstract
AbstractIn this chapter, we compiled and summarized the information of the surface ruptures accompanied with the 2016 Kumamoto earthquake sequence to provide an overview of the surface ruptures and introduction to the following chapters. The primary surface ruptures appeared principally along the previously mapped active faults, such as the Futagawa, Hinagu, and Idenokuchi faults, but many scattered and isolated surface breaks were also found around and away from the main surface ruptures. The end-to-end distance of the main surface ruptures excluding the isolated surface breaks was ~30 km, but the total length of the mapped surface ruptures reached as long as ~87 km. The maximum right-lateral offset was 225 cm on the Futagawa fault, whereas the maximum vertical displacement of 190 cm down to the west was found on the unmapped section of the Idenokuchi normal fault.Keywords2016 Kumamoto earthquakeSurface ruptureFutagawa fault
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