A newly developing method, optically stimulated luminescence (OSL)-depth profiles (DPs), provides a novel means of reconstructing and quantifying fault slip on timescales of 10¹⁻⁴ years. A targeted bedrock fault scarp along Langshan in north China, used as proof of concept, is divided into four sections based on four groups of OSL-DPs at different heights up the bedrock fault scarp. These have seismic displacements of 170, 80, 130, and 140 cm, and without considering the erosion rate, the exposure ages at the four displacements are 6–35 a, 19–84 a, 0.5–0.9 ka, and 2–5 ka, respectively. The ages are overall in chronological order, while the actual ages are likely underestimated due to erosion. After assuming erosion amounts according to the weathering characteristics, the calculated ages are mostly consistent with paleoseismic trenching studies. In addition, the method may identify a seismic event that previous studies did not identify.

中文翻译：

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一种利用岩石表面发光测年重建基岩断层陡坡滑动历史的新方法

一种新开发的方法，光激发发光 (OSL)-深度剖面 (DPs)，提供了一种在 10 ^{1-4时间尺度上重建和量化断层滑动的新方法}年。作为概念验证的华北狼山沿线有针对性的基岩断层陡峭，基于基岩断层陡坡上不同高度的四组 OSL-DP 分为四个部分。它们的地震位移分别为170、80、130和140 cm，不考虑侵蚀速率，四个位移的暴露年龄分别为6-35 a、19-84 a、0.5-0.9 ka和2-5 ka ， 分别。年龄总体上按时间顺序排列，而实际年龄可能由于侵蚀而被低估。根据风化特征假设侵蚀量后，计算出的年龄与古地震挖沟研究基本一致。此外，该方法可以识别以前的研究没有识别的地震事件。