Fig. 1From: Shear-wave velocity determination by combining data from passive and active source field investigations in Kumamoto city, JapanGeology of the central part of the Kumamoto Plain (GSJ-AIST 2016) (https://gbank.gsj.jp/geonavi/). The location of the KUMA station is shown as black circle. The Shiragawa, the Midorikawa and the Kiyama rivers are drawn together with parts of the Futagawa and Hinagu faults. Locations of the field surveys related to our work, are shown as square symbols explained in the map’s legendBack to article page