Analysis of aquifer distribution to determine land movement using the geoelectric resistivity method (Case study: Landslide in Payung Sari Village, Ciamis Regency)

Abstract

A study has been conducted to obtain the distribution of aquifer layers on the southern slope of Mount Sawal (1764 m). The upper slope is a relatively gentle area, in the village between Ciamis-Payung Sari, West Java Province using the geoelectric resistivity method with the Schlumberger configuration, and 2D with the Wenner configuration. Resistivity data processing using 2D resistivity using the RES2DINV program. Based on the resistivity values ​​obtained, the aquifer layer of the Payung Sari research area is composed of river sedimentary rocks and there are also other parts composed of volcanic rocks. The resistivity of the aquifer group ranges from 6.7 - 425 Ωm, consisting of tuffaceous sand, tuff breccia interspersed with clayey tuff, and is a free to confined aquifer, the thickness ranges from 10 - 50 m.