一种基于地理信息系统的表层建模方法探讨

A Surface Modeling Method Based on GIS

河流侵蚀地貌区地表高程变化剧烈,由于受到采集设备和成本的限制,传统的地震采集数据纵横向上物理点比较稀疏,地表测量数据的密度不足以详细调查表层结构。随着科技的发展,卫星技术的应用,利用地理信息系统获取的数字高程模型(DEM)数据越来越精确。基于河流侵蚀地貌区地理信息,结合表层调查控制点的成果,对地表进行精细建模,达到了较好的效果。

The surface elevation is changed drastically in river erosion feature area. Due to cost and acquisition device constraints, conventional seismic acquisition data is relatively sparse in vertical and horizontal physical points, and surface measurement data density is not enough to investigate the surface structure in detail. With the development of technology and application of satellite technology, the use of geographic information system can obtain more accurate DEM elevation data. Based on geographic information of river erosion feature area, and combined with the results of surface survey control points, a surface modeling is established, achieving good results.