Gravity data retrieved from the Bureau Gravimétrique International and the Gravimetric Atlas of Switzerland have been used to evaluate their applicability as a subsurface investigation tool to assess key geological features in support of the geothermal exploration in the Geneva Basin (GB). In this context, the application of an effective processing workflow able to produce reliable residual gravity anomalies was implemented as a crucial first step to investigate whether and to what level gravity anomalies can be correlated to geologic sources of geothermal interest. This study focusses on the processing workflow applied to publicly available gravity data, including the quantification of the uncertainty. This was then also used for first-order 2D forward gravity modelling. The resulting residual anomalies demonstrate the potential use of gravity investigations for geothermal exploration in sedimentary basins, and also reveal areas of significant, irreparable misfit, which calls for the use of complementary data and 3D subsurface structural knowledge. The results of such investigations will be presented in subsequent studies.

中文翻译：

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使用重力数据描绘日内瓦盆地（瑞士）地热勘探感兴趣的地质特征：前景和局限性

从国际重力局和瑞士重力地图集检索到的重力数据已被用于评估它们作为地下调查工具的适用性，以评估支持日内瓦盆地 (GB) 地热勘探的关键地质特征。在这种情况下，能够产生可靠的残余重力异常的有效处理工作流程的应用被实施为关键的第一步，以研究重力异常是否以及在何种程度上可以与地热地质来源相关联。本研究侧重于应用于公开可用重力数据的处理工作流程，包括不确定性的量化。这随后也用于一阶 2D 前向重力建模。由此产生的残余异常证明了重力调查在沉积盆地地热勘探中的潜在用途，并且还揭示了重要的、不可修复的失配区域，这需要使用补充数据和 3D 地下结构知识。此类调查的结果将在后续研究中呈现。