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介绍了地理信息系统的主要特征、概率性地震危险性分析的一般步骤及其在MapGIS软件上的实现方法。并以三峡坝区某工程场地为例对程序进行了测试。GIS的用户界面使用户易于掌握概率性地震危险性分析的流程和数据。更重要的是它提高了用户对复杂地震危险性分析过程的认知能力,可以帮助用户在地震危险性分析中从空间数据中挖掘更多的信息。
The main features of GIS, the general steps of probabilistic seismic hazard analysis and its implementation in MapGIS software are introduced. Taking a project site in the Three Gorges Dam as an example, the program was tested. GIS’s user interface makes it easy for users to master the processes and data for probabilistic seismic hazard analysis. More importantly, it enhances the user’s cognitive ability in the process of complex seismic hazard analysis, which can help users to mine more information from spatial data in the seismic risk analysis.