用GIS方法研究唐山和邢台地震区全新世隐伏活动构造

Study on buried active structures of Holocene in Tangshan and Xingtai areas with GIS method

以 1 92 6年出版的顺直地形图 (1∶ 5万 )为基础图件 ,使用地理信息系统 (GIS)的方法 ,统计研究邢台和唐山两地震区地表水系的密度分布。早期的地形图较好地保留了原始水系形态 ,有利于提取隐伏构造活动的信息。 GIS技术具有信息量大 ,数据处理速度快的优点 ,做出的水系密度等值线图比较客观地反映了全新世以来平原覆盖层下地震构造及其活动的基本特征。本文介绍了基本研究思路和研究方法 ,并提供出邢台和唐山地震区的初步研究成果。

Base on the Shun-zhi topographic map published in 1926,the density distribution of surface water system in Tangshan and Xingtai areas have been studied with GiS method.The original water system pattern have been kept very well in the early topographic map,which is good for abstracting information from the buried tectonic activity.Since GIS method had the advantage of large information and high calculation speed,the density isogram of water system made with this method reflects the seismostructure and its feature of activiey very well.In this paper,the study method and way are briefly introduced,and the primary results in Tangshan and Xingtai areas are given.