Identification of the Manna Segment Sumatran Fault Using GGMplus Gravity Anomaly Data with the Second Vertical Derivative (SVD) Method

This study uses the gravity method to assess characteristics of Manna segment fault, a part Sumatran fault. research aims contribute existing knowledge by providing additional insights into fault's characteristics, which is essential for future disaster mitigation efforts. The fault geographically situated between coordinates 4.4⁰S - 3.9⁰ S and 102.7⁰ E – 103.2⁰ E, making this area prone earthquake hazards. anomaly data, including free air topography, were collected from 62,501 data points. Simple Bouguer Anomaly (SBA) values obtained ranged 25 mGal 95 mGal. By utilizing Second Vertical Derivative (SVD) dividing three regions with multiple sections, analysis revealed that minimum maximum SVD relatively similar. suggests can be classified as strike-slip ranging Elkins-20 6 identified branches main in 2 3 based on map. Overall, enhances our understanding valuable its contributing