Evaluating the Reliability of Satellite Gravity Data for Disaster Risk Mapping in West Coast Aceh's Coal Mines

Abstract:

This study evaluates the accuracy of satellite gravity methods in disaster risk mapping for the coal mining areas of West Coast Aceh, specifically between longitudes 96.00°E to 96.30°E and latitudes 4.00° to 4.30°. The satellite gravity technique was utilized to detect fault zones through the examination of rock density variations. The collected data was processed to determine the complete Bouguer anomaly, including terrain corrections based on an initial average density of 2.67 g/cm³. The complete Bouguer anomaly values span from -36.2 mGal to 42.4 mGal, with higher values concentrated in the northeastern region and lower values noted in the southwestern coastal area. Regional and residual anomalies were distinguished through first-order trend surface analysis, resulting in residual anomalies between -33.1 mGal and 32.9 mGal. Gradient analysis was utilized to define geological boundaries, which were confirmed with geological maps. The horizontal derivative results exhibited an intense connection with fault structures found on the reference geological map, whereas the vertical derivative predominantly emphasized major fault boundaries but was less effective in identifying smaller structures. The results of this study are anticipated to substantially enhance disaster risk reduction initiatives and facilitate safer, more sustainable development planning in the West Coast Aceh region. Furthermore, these findings serve as a significant reference upcoming research and decision-making concerning disaster mitigation in mining regions.

• Periodical: Construction Technologies and Architecture (Volume 18)
• Pages: 75-85
• DOI: https://doi.org/10.4028/p-BgMz9u
• Online since: June 2025
• Authors: Adib Adib*, Radhiyullah Armi, Sabrian Tri Anda, Azwanda Azwanda
• Keywords: Disaster Risk Reduction, FHD, Satellite Gravity Data, SVD

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