The Flood Early Warning Information System Based On Webgis Design And Implementation

Mountain torrent disaster is the debris flow and landslide induced by the heavy rainunder the special geographic conditions. It always bring a devastating disaster for partsof an area. The most part of Sichuan province is among mountainous area, with hillyregion making up2/3of the total land area. Due to the excessive human activities andspecial geographical climate conditions often leads to the occurrence of mountain flooddisasters that cause the loss of life and money and the serious influence the social andeconomic development. For mountain flood disasters occur currently, strong rainfallis the most common inducement for it, and mountain flood early warning effect can beenhanced by improving weather forecast accuracy. Therefor, based on meteorologicallive observation data processing analysis of mountain flood disasters preventionmeteorological monitoring early warning platform is an important means of mountainflood disasters prevention.For disaster prevention information query demand, the platform use of today’spopular Web technology combined with GIS technology. Adopts B/S mode fordevelopment, provides data inquiry, search and analysis comparison for livemeteorological observation data such as precipitation, temperature, atmosphericpressure and wind field etc, realizes automatic station message decoding and factorinformation inquiry analysis for meteorological observation data, to have graphicalinquiry function, GIS data map spotting, and isoline/color drawing generation function,and have site information management, platform basic information configuration anduser management functions etc. The platform realizes the decoding, inquiry,analysis and alarming function for observation data needed for live rainfall conditionand weather forecast, provides data support for mountain flood disaster’s timely monitorand early warning, improves the scientificalness and accuracy of flood preventioninstruction and the timeliness of information collection and publication; improves floodprevention scheduling methods to meet the requirements of all levels of Flood Control Office, Hydrological Bureau, Meteorological Bureau on mountain flood preventionmeteorological forecast early warning service.