地震韵律的研究方法初探——以合肥市断层活动习性综合探讨为例

Preliminary research method of seismic rhythms——Taking synthesized research of active behavior for Hefei's active faults as an example

从利用历年来合肥市工程勘察资料入手,编制合肥市基岩顶面等高和第四系等厚平面和立体图,确定对第四纪地层有影响的活动断层,对其进行浅层地震勘探校核其空间位置,重点进行断层两侧第四系、水系和地貌发育特征对比来反演探讨合肥市断层活动习性.研究的初步结果表明,穿过合肥市的北东、北西和近东西向断层晚第四纪以来均具有相当程度的活动性,其中北东和北西向组断层曾多次活动,并有可能构成合肥市1673年5级地震发生的构造条件.笔者的工作将为条件类似地区构造活动习性和地震韵律研究提供有效途径.

Starting with utilizing materials of engineering reconnaissance of past years in Hefei city, the plane and three-dimensional contour maps of bedrock and Quaternary were made , active faults touched Quaternary were confirmed, in order to checking dimensional location the faults, a technology of shallow layer seismic exploration was adopted. Contrast of develop characteristics of Quaternary, water system and landforms two side of the faults were carried out emphasize particularly on, active behaviors of the faults ware traced and discussed. The Investigative preliminary results declared that the faults trending northeast, northwest and approximate east-west and cutting Hefei city had quite degree activity since late-Quaternary, and the faults trending northeast and northwest have had many time's activity, which formed probably generational tectonic condition of M5,1 673, Hefei. The author's works will offer effective way for research of tectonic active behavior and seismic rhythms in similar area.