A Database Designed and Built on the Assessment for the Loss of the Seismic Hazards: A Case Study in Tangshan Earthquake
地震灾害损失评估数据库的设计与建立──以唐山地震为例

The objective of this database for the seismic hazards is to develop techniques for assessing and analyzing the distribution of seismic hazards through the useof airborne remote sensing data and GIS techniques. It is helpful to provide theseismic hazard relief to the people in the earthquake-striken areas.The database in ILWIS and PC ARC/INFO is based on the airborne remotesensing data of Tangshan in 1976. It contains three steps: the first is to build thegeographic database supported by GIS, including the geographic coordinates,rivers, administrative areas, roads, railways, residential areas; the second is tobuild the seismic hazard database by using the real-time airborne remote sensingdata, like aerial photography, to classify the different levels of the damaged residential areas, roads, railways, and the surface rifts, etc.; the third is to producethe enveloped lines in the high intensity areas to assess the loss of the seismicbazards.