面向突发性水污染事件的三维可视化系统

针对突发性水污染事件的突发性、复杂性与潜在的次生衍生危害等特点,设计并开发了面向突发性水污染事件的三维可视化系统。对建设三维可视化系统的需求进行了分析,提出了系统的四层体系结构,基于三维地理信息系统World Wind组件,采用三维可视化环境建模、海量数据缓存机制以及基础地理信息集成等信息技术,开发了系统的基本应用与高级应用,将系统应用到2005年发生在松花江流域的突发性水污染事件中。实例表明:所设计的三维可视化系统具有集成性、可扩展性和较好三维表现力等特点,支持海量数据与复杂应用的集成与三维展示,为突发性水污染事件的空间模拟和决策支持提供支撑。

Three-dimensional visualization system facing sudden water pollution incidents

Aiming at characteristics of suddenness,complexity and potential secondary harm of sudden water pollution event,this study designed and developed a sudden water pollution incidents-oriented three-dimensional(3D) visualization system.The paper analyzed the construction necessity of the 3D visualization system,and proposed four layers system structure of the system.Basic applications and advanced applications were developed based on 3D geographic information system World Wind components,with the help of information technologies of 3D visualization environment modeling,mass-data caching mechanism and integration of basic geographical information and so on.The system was applied and showcased in the sudden water pollution event happened in Songhua River Basin in 2005.The application shows that system proposed in this study has characteristics of integration,extendibility and good 3D expressivity.It supports the integration of 3D display of mass-data and complicated applications,and could provide support for the space simulation and decision making for sudden water pollution events.