活动构造定量研究与应用

Quantitative studies and applications of active tectonics

自上世纪 70年代末以来 ,活动构造研究已从描述性和定性研究阶段进展到定量研究阶段 ,并主要围绕 3个方面展开工作 :(1)如何刻画活动构造的活动特征 ,即需要得到哪些活动特征定量参数 ;(2 )如何得到这些定量参数 ;(3)如何应用这些参数进行地震危险性评价和工程安全性评价。文中就有关活动构造定量研究的这几个方面进行初步总结和分析 ,并指出在今后一段时间内 ,提高测年精度、减少研究过程各个环节的误差和不确定性 ,将是活动构造定量研究的主要发展方向。

The studies of active tectonics have advanced from a descriptive or qualitative stage into a quantitative stage since the 1970s. The researches are focused on three aspects: (1) how to characterize the active tectonics, or what parameters are needed to characterize the active tectonics; (2) how to obtain those parameters; and (3) how to apply those parameters to seismic hazard evaluations and to earthquake engineering safety assessments. On the basis of analysis and summarization of those three aspects of active tectonics studies, we conclude that increasing the accuracy of dating of Quaternary sediments and reducing uncertainties associated with every aspect of studies are the major direction of quantitative active tectonics studies.