A Smartphone-based Interactive Flood Warning System for ungauged mountainous regions

Abstract

The rainfall forecast in mountainous region generally has high uncertainty,and the measurement and real-time transfer of actual rainfall data is difficult and expensive.Based on information technologies,including smartphones and cloud computing,the framework of an interactive flood warning system was proposed and tested for ungauged mountainous regions according to the mass prediction and prevention principle.Firstly,geographic coordinates and rainfall estimate inputs from local residents were collected via smartphone terminal.Then the parallel hydrological model on the cloud server was automatically executed to simulate the rainfall-runoff process.Finally,according to the allowed flood discharge at different locations,warning levels were derived from runoff simulation results and pushed to the rainfall information provider and potential flood sufferers via smartphones.Because of the high efficiency of data collection and hydrological simulation,residents can receive warning information before the flood arrives,and save time to escape.The application of this system would essentially improve the technical level of mass prediction and prevention. 【摘要】 山區降雨預報的不確定性強,實際降雨信息難以實時測報,使得準確及時的洪水預警難以實現。從群測群防角度看,山區居民可粗略測量各自位置上的實時降雨量,但不了解上游流域內的降雨情況,也不掌握對洪水進行可靠估計的方法。基于智能手機、云計算等信息技術,提出并初步實現了一個用于資料缺乏山區洪水預警系統的框架。該系統綜合了群測群防思想和水文模擬技術,在降雨發生后通過居民的智能手機終端收集地理坐標和雨量估計值,驅動云端的數字流域模型自動運行,根據徑流模擬結果推定不同地理位置的預警級別,并將預警信息推送到雨量信息提供者和潛在受災者,使用戶在洪水到達前接收到預警信息。該系統的應用將提高群測群防的技術水平。