标题： 潜在二氧化碳封存场地在德国北海中部的滑动倾向分析 显示英文标题

标题： Slip-tendency analysis of a potential CO2 storage site in the central German North Sea

摘要： 地下二氧化碳储存操作可能导致诱发地震，这可能部分与附近的受影响断层有关。 考虑到德国北海西石勒苏益格区块中部邦特砂岩地层的储存潜力，我们研究了选定研究区域附近现有断层的活化和地震性潜力。 为此，我们基于大约80条二维地震线开发了一个三维断层数据集，结合了60年的勘探历史。 介绍了该地区地质特征和岩性描述的背景信息。 使用断层数据集和通过德国三维数值应力模型的空间插值得到的现代应力张量，进行滑动倾向分析，以评估现有断层活化的敏感性并揭示关键的震源机制，这对于进一步的波传播模拟非常重要。 此外，我们将该方法扩展以估算可持续孔隙压力窗口以及在活化事件中的潜在矩震级。 结果表明，NW/SE和NNW/SSE走向的断层表现出较高的滑动倾向。 在这些断层中，那些具有高于平均滑动倾向和潜在矩震级的断层被识别并进行了讨论。 显示英文摘要

摘要： Underground CO2 storage operations may lead to induced seismicity, which can be partially related to nearby affected faults. Considering the storage potential in the Middle Buntsandstein sandstone formation on the West Schleswig Block within the German North Sea, we investigate the reactivation and seismicity potential of existing faults in the vicinity of a selected study area. For this, we develop a 3D fault data set based on roughly 80 2D seismic lines, combining 60 years of exploration history. Contextual details regarding the geological features and the lithological description of the area are presented. Using the fault data set and the present-day stress tensors derived through spatial interpolation of the 3D numerical stress model of Germany, a slip-tendency analysis is performed to assess the susceptibility of existing faults to reactivation and reveal critical focal mechanisms, which are important for further wave propagation simulation. Furthermore, we extend the procedure to estimate the sustainable pore pressure window and the potential moment magnitude in the event of a reactivation. The results show that the NW/SE and NNW/SSE-oriented faults exhibit a higher slip tendency. Among these faults, those with a combination of above-average slip tendency and potential moment magnitude are identified and discussed.