Understanding of flow liquefaction in Lolu Village based on seismic refraction tomography method

Abstract A big earthquake may induce flow liquefaction phenomena in lowland areas made up of sedimentary deposits. To understand the factors controlling such a hazard, it is necessary to have knowledge sub-surface geological conditions liquified area. This paper presents results series seismic refraction measurements Lolu Village where occurred during 2018 Palu-Donggala earthquake. The tomography indicate presence horst-graben structures, probably associated with localized pull-apart basin. this study suggest that structure also governing factor for occurrence an area complex fault system.