The Great Sumatran Fault (GSF) activity is a severe threat to Banda Aceh development as the capital city of Aceh Province, Indonesia. The earthquakes originating along this fault trace, despite generating low strength, considerably threaten infrastructure and human lives. Therefore, a detailed study of the GSF activity and presence becomes critical. In this paper, we applied the Global Gravity Model plus (GGMPlus) to map the subsurface structure and modeling of two GSF segments with a resolution of 200 m/px, namely the Aceh and Seulimeum segments toward the north of the Sumatran Island. The Bouguer anomaly data are inconsistent with the geology of the study areas, dominated by igneous rocks on the Aceh segment and volcanic rocks on the Seulimeum segment. Further, the contrast between the Seulimeum segment in the northeast and the Aceh segment in the southwest can be demonstrated by high-pass filtering. The GGMPlus data validation results with field measurements using the Scintrex CG-5 Autograv, the root mean square error obtained via data comparison are 12.32% in the Krueng Raya fault zone, and 26.1% at the Seulawah Agam Volcano area, respectively. We also performed 2D gravity data modeling along with the Aceh and Seulimeum segments in the NW–SE direction. This model was then compared with the geological cross section, seismicity, and magnetotelluric data. The results of Singular Value Decomposition and Occam inversion show three vertical blocks of high densities with an interspersion of lower densities, which can be confirmed as the Aceh and Seulimeum segments. Based on data processing, it can be concluded that the GGMPlus satellite can improve the maps and images of the northernmost GSF structure.

苏门答腊大断层（GSF）活动严重威胁着班达亚齐作为印度尼西亚亚齐省的省会城市的发展。尽管强度不高，但沿着该断层迹线发生的地震却严重威胁了基础设施和人类的生命。因此，对GSF活性和存在的详细研究变得至关重要。在本文中，我们应用了全球重力模型加法（GGMPlus）绘制了地下结构，并建模了两个GSF段，分辨率为200 m / px，即苏门答腊岛以北的Aceh和Seulimeum段。布格异常数据与研究区的地质情况不一致，亚齐段的火成岩和Seulimeum段的火山岩占主导地位。进一步，高通滤波可以证明东北的Seulimeum段与西南的Aceh段之间的对比。通过使用Scintrex CG-5 Autograv进行现场测量得到的GGMPlus数据验证结果，通过数据比较获得的均方根误差在Krueng Raya断层带为12.32％，在Seulawah Agam火山区为26.1％。我们还进行了NW-SE方向上的Aceh和Seulimeum段的2D重力数据建模。然后将该模型与地质剖面，地震活动性和大地电磁数据进行了比较。奇异值分解和Occam反演的结果显示了三个高密度的垂直块，其中散布着较低的密度，可以确认为Aceh和Seulimeum段。基于数据处理，