The Subsurface Rock Modeling with Half Slope Inversion of Reduce to the Pole Geomagnetic Anomaly in Hot Spring Natar-Lampung Area

Abstract

The research in South Lampung's Natar area assesses geothermal heat source potential using the magnetic method with 89 measurement points along the Lampung-Panjang Fault line in a 3 km^2 area. Reduce To The Pole filtering enhances magnetic data accuracy. The Peter Half Slope method is employed, revealing depth ranges for different underground indicators (82.63 m to 144.25 m for very thin bodies, 61.97 m to 108.19 m for intermediate bodies, and 49.57 m to 86.55 m for very thick bodies). Geological analysis of the Lampung-Panjang fault area correlates with the Tanjungkarang Sheet Map, indicating various rock types within the Lampung Formation. The study underscores the Peter Half Slope method's effectiveness in determining subsurface anomaly depth through magnetic data.