The Research And Application On WebGIS Typhoon Forecast System Based On ArcGIS Server Technique

Typhoon is one of the most destructive disasters in nature.China is located in the area of Northwest Pacific Ocean,which has the most frequent occurrence of typhoon. Meanwhile,China is one of the most seriously disastrous countries suffering from typhoon.With the development of science and technology,the method for studying typhoon and acquiring data is improved,which leads to a dramatic increase in the data of typhoons.So we are eager to seek a better way to manage,analyze,retrieve and share the data.WebGIS is the union product of Internet and GIS.It not only has the functions of GIS,but also the characteristics of Internet.It is one of the tendencies of GIS.With the extensive applications of GIS in various fields,WebGIS becomes widespread,It proves WebGIS is a highly effective approach of data management and analysis Therefore,WebGIS will provide a new method for the retrieval and sharing of typhoon data.This paper studies how to utilize WebGIS to provide the service for information retrieval of typhoon. By means of a thorough study of status in quo of system based on WebGIS for Typhoon Forecast System combined with an analysis of the data organization, supporting techniques and research procedure that relate to the system,the paper fixes on proper system platform,functional modules and meshwork topology.The paper chooses ArcGIS Server as development platform in combination with Visual Studio.NET,a new generation compiler launched by.Microsoft corporation which provides integrated development environment(IDE)for its users,and adopts the technique of ASENET.An in-depth study is made in this paper on the establishment to the graphics——aided system for Typhoon Forecast System based on ArcGIS Server. The design of skeletal system,web model,database system,platform establishment and functional module are completed.The client subsystem preliminarily realizes the issuance of digital maps and the staff can perform som~ basic manipulation on maps via the browser,for instance construction land information query between graphical features attribute tables and other interrelated functions.The system implements following spatial analysis functions:basic farmland analysis,construction land conflict analysis,buffer analysis and so on.It is of great practical value.The outcomes of our research:first,a solution for structuring Spatial Web Service based on ArcGIS Server is established.Secondly,an original system was designed to give answer to problems confronted by traditional WebGIS.Moreover, the paper illustrated specifically the technique frame of ArcGIS Server and then applied Ajax into it.Feedback from our users has shown that the framework functioned excellently.