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Marine GIS Field Data Model

ZHANG Tianyu ZHOU Chenghu SHAO Quanqin(Institute of Geographic Sciences and Natural Resources Research, CAS , Beijing 100101)  
Marine GIS has become one of the important developing domains of GIS sciences Both scholars in GIS and in oceanography are interested in it The basic representation is considered as one of the most important problems This article presents a data model to solve the problem It includes three database: basic database, data warehouse and database for marine phenomena; two data analyzing mode: data pre disposing and feature analyzing It uses multi level extended grid data structure with two kinds of global grid scheme One is equal angle, the other is equal area grid scheme They have some new marine chara cteristics
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