為發展適用於臺灣河川特性、以及災害性天氣系統下河川表面流速的接觸式自動化觀測技術，本團隊開發微型化衛星追蹤漂流浮標及相關系統，以自動化設計取代目前人力操作方式，減低極端天候下觀測風險成本，同時將觀測範圍延伸至河口並進行密集觀測，提升資料即時性、資料空間覆蓋率與時間解析度。研究成果可直接與現行作業方式接軌，並滿足未來水利事業相關各種河川水理分析、防災減災與工程設計所需。 本團隊目前已經具備應用微型浮標觀測近岸流流場的技術與實際經驗，本團隊開發的系統成本低廉、擴充性高，並具備完整的人、機、資料介面。本計畫規劃每一年度將施放至少180顆漂流浮標於三場豪大雨事件中，藉由大量、密集的軌跡資料，提升觀測數據的時間解析度與空間分佈密度，分析洪峰過程之時空演變，探討漂流浮標應用於災害性天氣系統河川流速觀測的可行性，並藉由實際觀測經驗改善系統設計，提出最佳作業參數，最後擬定自動化河川漂流浮標觀測作業規範。 ;It is the purpose of present project to develop a disposal satellite-tracked drifter buoy for surface flow speed measurement in the Taiwanese river especially for the duration of hazardous rainfall conditions. Due to the high risks of manual measurement during extreme weather, the drifter and associated supporting sub-systems are designed for routine and automated operations. This Lagrangian measurement provide along-stream data instead of only at a fixed location. With periodic deployment, both spatial and temporal data could be obtained. The dataset and format could be integrated with present system with ease which fulfill the increasing demands from hazard mitigation, engineering design and water utilization applications. The prototype of this drifter system has been demonstrated its capability in the field experiments in coastal zone. The drifter system is low-cost, expandable in measuring items and equipped with GUI function. It is planned to deployed at least 180 drifters in the main river during three events this year. The temporal resolution and spatial coverage could be benefit from mass drifters launch, which makes it possible to monitor and investigate the peak-flood wave propagation and evolution. The feasibility study of using this system will be carried out. The optimal parameters within the operations could be tuned after the in-situ experiments this year. It is finally scheduled to propose the guidelines of the observation in operational mode. ;研究期間：10502 ~ 10512
