Study on the key technology of "digital seabed" system modeling

On the basis of study of theoretical foundation of "digital seabed" system and the technical implementation in marine sciences,the meaning,composing and framework of the "digital seabed" system are presented.Some key technical questions of "digital seabed" system are discussed,for example,spatial database management technology,XML-based spatial database display technology of WebGIS,three-dimensional modeling technology for complicated seabed,integrative conformity and display technology of multi-source information and virtual reality technology.It can provide multi-level reference and help for the people being engaged in the investigation and exploitation of the marine resources.