DEM数据可视化及在地震研究中的应用

DEM Data Visualization and Application to Earthquake Research

以ArcGIS 9.3软件为基础平台,借助其强大的数据管理、处理与空间分析功能,建立厦门市地理数据库,利用等高线数据生成厦门市数字高程模型(DEM)。通过在DEM中叠加地震数据和活动断裂,可以得出结论:高程高的地区地震活动比高程低的地区相对要多;纹理零乱的地带一般都有活动断裂的分布或相交,而活动断裂又和地震的发生密切相关。结论说明DEM在地震研究方面具有一定的实用性和有效性。

The strong data-managing, processing and spatial analysis functions of the ArcGIS 9.3 software foundation platform was used to build the geographic database of Xiamen, and contours were used to generate the digital elevation model （DEM） of it. By superposing the earthquake da- ta and active faults on DEM, we concluded that the seismicity of high-elevation areas was compar- atively more than low-elevation ones, and in texture messy zone there was often distribution or intersection of active faults, which were closely related to earthquake occurrence. The conclusion shows that DEM is practical and effective in earthquake researches.