The crustal structure beneath the United Arab Emirates (UAE) is still relatively unknown. Here, we use regional gravity data to constrain the subsurface density distribution and structure of the crust of the UAE by applying diverse gravity derivatives methods such as horizontal derivative (HDR), analytic signal (AS), and tilt angle (TA) to analyze the subsurface structure and perform three-dimensional (3D) gravity inversion for imaging crustal structure from the surface down to 35 km depth. The results are compared with known geological regional structures and the location of the petroleum fields. The Bouguer anomalies range from −100.8 to 113.5 mGal. The 3D gravity inversion results and the maximum Bouguer values coincide with the ophiolitic Hajar mountains in the east and the successive anticlines (uplifted basement rocks) and synclines in different parts of UAE, which could be promising sites for future mining and petroleum exploration. Also, the 3D density model results and the minimum Bouguer anomalies are located over the Aruma Basin, eastern UAE Platform, and Low Central UAE Platform, which can be the places for deep groundwater aquifers. These new results from HDR, AS, and TA successfully identify known geological structures, especially in the eastern part of UAE.

中文翻译：

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使用重力数据对阿拉伯联合酋长国的地下结构进行调查

阿拉伯联合酋长国（UAE）下的地壳结构仍然相对未知。在这里，我们使用区域重力数据通过应用多种重力导数方法（例如水平导数（HDR），分析信号（AS）和倾斜角（TA））来限制阿联酋地壳的地下密度分布和结构。地下结构，并执行三维（3D）重力反演，以成像从地表到35 km深度的地壳结构。将结果与已知的地质区域结构和油田的位置进行比较。布格异常范围为−100.8至113.5 mG​​al。3D重力反演结果和最大的Bouguer值与东部的片石质哈吉尔山脉以及阿联酋不同地区的相继背斜线（隆起的基底岩石）和向斜线重合，这可能是未来采矿和石油勘探的理想之地。同样，3D密度模型结果和最小的布格异常位于阿鲁玛盆地，阿联酋东部平台和阿联酋低中心平台之上，这可能是深层地下水含水层的地方。HDR，AS和TA的这些新结果成功地确定了已知的地质结构，尤其是在阿联酋东部地区。阿联酋中央低平台，可以作为深层地下水含水层的地方。HDR，AS和TA的这些新结果成功地确定了已知的地质结构，尤其是在阿联酋东部地区。阿联酋中央低平台，可以作为深层地下水含水层的地方。HDR，AS和TA的这些新结果成功地确定了已知的地质结构，尤其是在阿联酋东部地区。