The cyclic nature of glaciations and related postglacial faulting represents a risk for the deep geological disposal of spent nuclear fuel in areas likely to be affected by future glaciations. Seismic history was therefore studied by means of detecting geomorphological structures on airborne laser scanning digital elevation models and underground by excavating in an esker and trenching across a postglacial fault located in northern Fennoscandia. OLS dating and assessing the geomorphological structures was used for timing of the seismic history. The results suggest that the faulting of different segments in the Pasmajärvi complex is due to at least two late Weichselian events, which probably occurred both subglacially and postglacially. The most reliable input for the moment magnitude estimates was vertical slip profiles, and therefore these estimates (M_W ≈ 6.4–6.9) are suggested. © 2020 John Wiley & Sons, Ltd.

中文翻译：

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古地震的地貌学证据：Pasmajärvi冰川后断层的表层和地下结构

冰河的周期性和相关的冰川后断层代表着在可能受到未来冰河影响的地区对乏核燃料进行深度地质处置的风险。因此，通过在机载激光扫描数字高程模型上检测地貌结构，并通过在地ker中开挖并横越位于芬诺斯坎迪亚北部的冰川后断层开挖地下来研究地震历史。使用OLS测年和评估地貌结构来确定地震历史。结果表明，Pasmajärvi复合体中不同部分的断层是由于至少两次Weichselian事件，这可能发生在冰期以下和冰期之后。弯矩量值估计的最可靠输入是垂直滑移曲线，_{w ^}  ≈6.4-6.9）提出了建议。分级为4 +©2020 John Wiley＆Sons，Ltd.