Preliminary Study on Magnetic Anomaly Analysis in Parongpong, West Java, Indonesia: Implications for Landslide Risk Mitigation
Anggie Susilawati, Eleonora Srigutomo, Dini Fitriani, Kartika Hajar Kirana, Mia Uswatun Hasanah, Kusnahadi Susanto, Budy Santoso

Department of Geophysics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran

Abstract

Parongpong, West Java, Indonesia, lies within moderate to high landslide zones due to its steep volcanic topography, active tectonic setting, and extreme rainfall patterns. This preliminary study integrates magnetic anomaly analysis with regional geological data to identify subsurface factors contributing to slope instability. Ground-based magnetic surveys were conducted across moderate to high-risk zones, comprising 82 measurement stations. Areas with low magnetic anomalies indicate a correlation between subsurface weathering and potential landslide triggers. The study demonstrates the utility of magnetic surveys as a preliminary tool for landslide hazard mapping, providing actionable insights for land-use planning and early-warning systems. Further integration of geotechnical and hydrological data is recommended to enhance risk assessment models.

Keywords: Magnetic anomaly, landslide area, Parongpong

Topic: Earth Physics and Space Science