%A NIM.: 22106020005 Adik Tertia Prawanningrum
%O Dr. Thaqibul Fikri Niyartama, S.Si., M.Si. dan Nugroho Budi Wibowo, S.Si., M.Sc.
%T ANALISIS SEBARAN FORMASI GUNUNGAPI JEMBANGAN DAN KALIBIUK MENGGUNAKAN METODE MAGNETIK DI DESA PENUSUPAN KECAMATAN PEJAWARAN BANJARNEGARA
%X Penusupan Village has a geological setting composed of the Jembangan
Volcanic Formation (QJYA) and the Kalibiuk Formation (TPB), with varying slope
gradients and areas affected by ground movement. This study aims to analyze the
relationship between geological formations and zones suspected to be prone to
ground movement and to model subsurface conditions based on the interpretation
of regional magnetic anomalies. Data acquisition was conducted at 49
measurement points using a Proton Precession Magnetometer (PPM) with an interpoint
spacing of approximately 130 m. The total magnetic field data were processed
through diurnal variation correction and International Geomagnetic Reference
Field (IGRF) correction. The results show that the regional magnetic anomaly
values range from -147.1 nT to 327.7 nT. Two-dimensional (2D) modeling identified
the Kalibiuk Formation (TPB) with magnetic susceptibility values of 0.2–0.6 × 10⁻³
SI at depths of approximately 0–85 m and the Jembangan Volcanic Formation
(QJYA) with magnetic susceptibility values of 12.0–19.0 × 10⁻³ SI at depths of
approximately 14–100 m. The zone suspected of experiencing ground movement is
associated with the Jembangan Volcanic Formation (QJYA) and is located on
relatively steep slopes. The presence of water seepage within the ground-movement
zone indicates the influence of hydrological conditions on slope stability.
%K Metode Magnetik, Formasi Geologi, Pemodelan 2D, Tanah Bergerak
%D 2026
%I UIN SUNAN KALIJAGA YOGYAKARTA
%L digilib78705