滩涂数字地形模型的建模与应用

THE DEVELOPMENT AND APPLICATION OF THE FORESHORE DIGITAL TERRAIN MODEL

采用数字高程模型描述上海市滩涂地形,研究和设计了数字高程模型的数据结构,较好地解决了海量数据的存储、查询和检索问题,由此建立了多年的滩涂数字地形模型。在此基础上研究了滩涂地形分析方法,并在地理信息系统平台上开发了滩涂地形分析系统。试用结果表明,该系统数据结构合理、功能齐全、运行快速稳定,较好地满足了滩涂海塘管理工作的需要。

In this paper, the Digital Elevation Model (DEM) was adopted for describing the landforms of the Shanghai foreshore, the data structure of DEM was studied and designed, and the problems arising form the storing, querying and indexing of the cloud data were solved efficiently. On such a basis, the multi-year foreshore digital terrain models were built. The methods for foreshore landform analysis were put forward by use of the models. The analytical system of foreshore landforms has been established by integrating these models and methods with Geographic Information System. It is shown from the application of the analytical system that its data structure is reasonable, its function is consummate, and its operation is rapid and stable. The system can meet the needs of foreshore management.