Prediction of Soil Liquefaction Phenomenon in Banda Aceh and Aceh Besar, Indonesia Using Electrical Resistivity Tomography (Ert)

Abstract

One of the global geohazard issues discuss among scientists is soil liquefaction phenomenon. The incidents occurred at Palu in September 2018 and Aceh in December 2004, triggered soil liquefaction phenomenon which lead severe damages and lives. The common research on the geohazard issue include geotechnical methods (SPT and CPT) and geophysical methods (MASW and seismic). This study was conducted at Meuraxa district (Banda Aceh) and Baitussalam district (Aceh Besar) to introduce the capability of Electrical Resistivity Tomography (ERT) to predict the soil liquefaction phenomenon. The 2-D resistivity data were process using res2dinv inversion software to produce resistivity inversion models which then correlated with published results. The study identified that the resistivity values of 0.1 -10 Ωm is a soil saturated zone which affected by seawater intrusion and concludes that the study areas predicted by ERT have a high potential of soil liquefaction phenomenon to be occurred.

Identification of Tsunami Deposit at Meulaboh, Aceh (Indonesia) Using Ground Penetrating Radar (Gpr)

“…Especially in Aceh Province which experiences severe tsunamis. It is considered that the research regarding the tsunami deposits sediment is necessary to be carried out since the tsunami deposits caused by the large scale tsunami is rarely occurred and the research was also limited [2]. One of the post-tsunami studies that are often neglected is tsunami deposit.…”