基岩断层面古地震研究的主要方法与选点原则

Main methods and site selection principles of paleo-earthquake research on bedrock fault surfaces

随着断层面形貌测量、宇宙成因核素测年、地球化学元素测定和光释光等一系列新兴技术的突破,基岩断层面在古地震研究方面的特征优势被不断发掘,日益成为国际古地震研究的热点与前沿。国内外学者从不同专业角度开展了大量的基岩断层面古地震研究,取得了一系列丰硕成果。本文在系统介绍基岩断层面古地震研究的进展、梳理归纳各类研究方法特点的基础上,论述了现阶段基岩断层面在研究对象的选择上存在的问题,提出了今后宜重点加强工作的若干建议,并对基岩断层面古地震研究发展前景进行了展望。

With the breakthrough of a series of techniques such as measurement of fault morphology,dating of cosmogenic nuclides,measurement of geochemical elements and the optically stimulated luminescence,the dominant characteristics of bedrock faults in paleo-earthquake research have been constantly explored and it has increasingly become international hotspots and frontiers of paleo-earthquake research. Scholars at home and abroad have carried out a large number of paleo-earthquake studies on bedrock faults from different professional perspectives,and have achieved a series of fruitful results. This paper systematically introduces the current situation,summarizes main research methods of paleo-earthquake study on bedrock fault surfaces,points out some problems existing in selecting a suitable study site.Finally,some aspects that need to be strengthened in the future are proposed,and prospects of paleo-earthquake research on bedrock faults are given.