Study On Marine Oil Spill Response Information System Based On WebGIS

The oil spill contingency has brought great harm to the ocean environment. The numerical modeling and simulation of the spilled oil at sea plays an important role in the oil spill contingency decision-making. To overcome the shortcoming of being used only in personal computer or Intranet of the traditional oil spill response information system based on GIS and make it really can be used in the Internet, the Marine Oil Spill Response Information System Based on WebGIS has been proposed in this paper.Firstly, the numerical modeling on the tidal current, and wind-driven current, and wave is studied based on the analysis of spilled oil's behavior at sea, and the numerical modeling on the fates and behaviors of spilled oil based on the particle approach is also studied. By using both Visual Basic and Visual Fortran, the paper develops the oil spill trajectory simulation module.Secondly, the system is designed by GIS technology, network technology, database technology and together. Based on the establishment of the response information databases, the paper develops the system by using the software such as Dreamweaver MX, Maplnfo MapXtreme, MS SQLServer2000 and the program languages such as HTML, JavaScript, Asp. With the application of ODBC and XML technology, the system is integrated into a software system. The main functions of the system including response information search, thematic map making, map edit, oil spill numerical simulation online, data management and so on.Lastly, the system is applied to simulate the "12.7" oil spill accident happened in the Pearl River Estuary. The contrast between the simulation results and the fact indicates that the numerical models and the system are feasible to simulate the behaviors of the spilled oil.