Identification of Peat Soil Thickness Using the 2D Electrical Resistivity Method: Case Study Bansir Darat Subdistrict, Pontianak City

Dwi Ishika Noviandita (Program Studi Geofisika, Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Tanjungpura, Jl. Prof. Dr. H. Hadari Nawawi, Pontianak – Kalimantan Barat, Indonesia 78124)
Zulfian Zulfian (Prodi Geofisika FMIPA Universitas Tanjungpura)
Joko Sampurno (Program Studi Geofisika, Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Tanjungpura, Jl. Prof. Dr. H. Hadari Nawawi, Pontianak – Kalimantan Barat, Indonesia 78124)

BULETIN FISIKA
Vol. 27 No. 1 (2026): BULETIN FISIKA

Bansir Darat is a sub-district that utilizes peatland for residential areas. Therefore, information about peatland thickness is essential for the community in the sub-district. This study aims to identify the thickness of peatland in the Bansir Darat sub-district. The geoelectric resistivity method using the Wenner-Schlumberger configuration was used in this measurement. Data collection was carried out on three tracks with a length of 50 m each and the smallest electrode spacing of 2 m. The obtained field data were inverted using the Least Squares Inversion method. The inversion results in the form of a resistivity cross-section with peatland soil estimated to have a resistivity value of 0.687 - 24.2 Ωm. The interpretation results indicate that the thickness of the peatland varies between 1.5 - 6 m. Information regarding the thickness of the peatland can be used in planning residential development by the local community.