针对全国范围内各地区地震发生频度、经济发展水平、人口密度分布的差异,提出采用多种途径建立不同层次和精度的中国大陆地区地震损失评估数据库,即详实型数据、欠详实数据和普适型数据。然后,分别阐述了每个层次数据库的建设思路和涵盖内容,并描述各类数据间的相互关联以及数据的应用场景。最后建立了基于WebGIS的基础数据库共享平台。通过实际地震灾害损失评估检验,多层次多精度的地震基础数据库能够适应于不同尺度的地震灾害损失评估,解决了大尺度范围下某些区域数据缺失以及高精度的数据无法充分利用的问题。
According to the difference of the earthquake frequency,economic development and population density in different region in China,we mainly research on dividing the earthquake basic database in China mainland into three layers in different level and precious(detailed,less detailed and general data)by various ways. The construction thought and content of each layer are expatiated,meanwhile,the connection and the application scenarios of vary database are also described. The basic database sharing platform based on WebGIS is set up as well. Actual earthquake damage is adopted as verification,and the earthquake damage loss estimation database in multi-level and multi-precision is proved to be adaptable to different estimation scale,and the problem of data missing in certain zone as well as insufficient utilize of high precision data under large scale are solved.
