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摘要
Hydrologic monitoring and simulation are very important for prevention and management of hydrologic disasters (e.g. flood and water pollution). This study proposed a new three-dimensional hydrologic information system for hydrologic monitoring, simulation and visualization based on the open-source software NASA World Wind (Hydro-WWJ). A three-layer structure consisting of the data layer, the server layer and the client layer of Hydro-WWJ was designed. The data layer includes components of data processing and storage; server layer includes different application servers,. World Wind APIs, data standards and applications; client layer provides human-computer interactive interfaces. Pyramid structure, tiling scheme and on demand mechanisms were used to organize, store and retrieve multiple data sets for Hydro-WWJ. Open Geospatial Consortium standards (e.g. Web Map Server and Web Feature Server) provided standardized data formats for Hydro-WWJ. Hydrologic models were integrated in the service layer of Hydro-WWJ for each hydrologic application. Applications of Hydro-WWJ including hydrologic data 3D visualization, reservoir 3D modeling and submerge simulation, hydrologic monitoring and early warning, sudden water pollution warning and simulation, reservoir submergence and migration analysis in Shaanxi province, China, showed that Hydro-WWJ provided a preferable 3D environment for monitoring, simulation and visualization of both multiple data sets and applications, especially for the hydrologic disasters analysis (e.g. submerge simulation, sudden water pollution warning), which promoted decision-makers to make better decisions. The open source and modular component nature of Hydro-WWJ allow it easily expandable and flexible to other related applications and may be used as a prototype in other disasters analysis and simulation (e.g. rainstorm, landslide and earthquake).
- 出版日期2013-10
- 单位西安理工大学
