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dc.contributor.author楊錦釧zh_TW
dc.contributor.authorJinn-Chuang Yangen_US
dc.date.accessioned2016-03-28T08:17:46Z-
dc.date.available2016-03-28T08:17:46Z-
dc.date.issued2015en_US
dc.identifier.govdocMOEAWRA1040247zh_TW
dc.identifier.urihttp://hdl.handle.net/11536/130427-
dc.identifier.urihttps://www.grb.gov.tw/search/planDetail?id=11424819&docId=460507en_US
dc.description.abstract由於全球氣候變遷效應影響,台灣近年之颱洪極端事件日益嚴重,降雨量及降雨強度亦呈增加趨勢;面對此問題,需認知防洪工程有其保護極限,水文降雨條件超過保護標準時,仍有面臨淹水的可能。水利署目前已經由雨量、流量、水位、潮位等即時監測進行洪水預報作業,於洪水期間發布淹水預警報至防災體系之相關單位及告知民眾,以期降低或避免洪水期間可能發生之災害。過去洪泛模擬常因計算量太大,而採用低解析度的地形資料作為計算格網的建置;然而近年來高解析度地形資料如5 米以下,已經運用於3維街景地理資訊的應用。近年來電腦運算速度不斷提升及利用高效能新的演算法架構,使得洪泛模擬也能應用高解析度地形資料,則有助於往後高精度都市洪泛模擬的發展。此外高時空解析度洪泛模擬結果在3維視覺展示的應用,也需要一併進行先期研究,才能充分發揮高解析地形資料的助益,提供決策者更直接且立體的資料呈現。zh_TW
dc.description.abstractThis study presents an application of inundation simulation model, 3Di, incorporating quadtree and subgrid techniques to improve the hydrocomputational efficiency while maintaining the simulation resolution up to DEM pixel with capability of handling LiDAR DEM data over a large area. Due to climate change, high intensity rainfall events happen more frequent than ever, which impact the present drainage system and potentially increase the inundation loss. High precision DEM and hydrocomputing speed are required to upgrage the conventional hydrocomputing power. A comparative study is conducted to evaluate the performance of 3Di and a conventional hydrocomputing program,SOBEK.en_US
dc.description.sponsorship經濟部水利署zh_TW
dc.language.isozh_TWen_US
dc.subject光達數值高程模型zh_TW
dc.subject點雲資料zh_TW
dc.subject四分樹法zh_TW
dc.subject子網格法zh_TW
dc.subjectLiDar DEMen_US
dc.subjectpoint cloud dataen_US
dc.subjectquadtree techniqueen_US
dc.subjectsubgrid methoden_US
dc.title高時空解析度淹水模擬結合三維視覺展示研究(1/2)zh_TW
dc.titleHigh Spatial Precision Point Cloud Data in the Application of Inundation Simulation and 3D Demonstrationen_US
dc.typePlanen_US
dc.contributor.department國立交通大學zh_TW
顯示於類別:研究計畫