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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 許銘熙 | |
dc.contributor.author | Yen-Hung Chen | en |
dc.contributor.author | 陳彥宏 | zh_TW |
dc.date.accessioned | 2021-05-20T20:38:20Z | - |
dc.date.available | 2013-02-03 | |
dc.date.available | 2021-05-20T20:38:20Z | - |
dc.date.copyright | 2008-07-30 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-07-25 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/9735 | - |
dc.description.abstract | 近年遙測技術的迅速發展,提升了地形資料的解析度和準確性。尤其是airborne scanning laser altimetry(LiDAR)的準確度大幅改善其可用性。若使用高精度的數值地形資料(DTM)必須配合相當可觀的電腦資源以進行計算是模擬時的一項難題。大區域的模擬計算必須給予適當的邊界條件,而高精確性的資料卻可能只需應用在整體區域中有限的一小部分。若能使用不同精度的格網於不同地區(格網間互相密合),將可減少模擬時計算資源上之浪費。
本研究主要目的在研發及建立一套淹水模式可計算不同解析度之多重格網,並進一步整合中央氣象局研發的定量降水預報系統(QPESUMS system)結合雷達觀測降雨系統之資料進行淹水模擬。 本研究模擬區域為八掌溪流域,以2005年6月12日暴雨事件,並以多重尺度格網進行淹水模擬並分析比較不同格網對模式運算時間及模擬精度的影響。結果顯示局部高解析度格網之多重格網計算方式,可在精度及效率的平衡中有更佳的表現。 | zh_TW |
dc.description.abstract | The quick growing of remote sensing technology in recent years has obviously elevated the quality, in both resolution and precision respects, of topographic data. The accuracy and availability of the airborne scanning laser altimetry have been promoted and the applications are widening. The requirements of computation resources cause the difficulty for massive simulations by using the high quality digital terrain models (DTM). In most practical situations, the large area for computation is essential to having proper boundary conditions, nevertheless, the high accuracy might be needed only in limited parts of the domain. The local refinement method is a feasible solution to provide results comparable to a much higher resolution (uniformly refined) mesh with less computational expense.
In this study, an efficient 2D inundation model, incorporating the QPESUMS radar precipitation and multi-scale computational method, will be established to provide accurate resolution results. The 0612 Storm event of 2005 in Bajhang River basin is adopted as the study case of the newly developing model. The accuracy and efficiency of proposed model are evaluated with different grid scale. The high performance of the multi-scale inundation model with high resolution grids in local area is obtained. | en |
dc.description.provenance | Made available in DSpace on 2021-05-20T20:38:20Z (GMT). No. of bitstreams: 1 ntu-97-R94622034-1.pdf: 4721972 bytes, checksum: 624368a30f56a402f365ee7aa9d2ef99 (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 誌謝......................................................I
摘要.....................................................II Abstract................................................III 目錄.....................................................IV 圖錄....................................................VII 表錄.....................................................XI 第一章 緒論...............................................1 1-1 研究背景與目的......................................1 1-2 文獻回顧............................................2 第二章 演算模式...........................................6 2-1 二維漫地流淹水模式..................................6 2-1-1基本方程式.......................................6 2-1-2 數值方法........................................7 2-1-3 初始及邊界條件..................................9 2-2 多重格網之銜接.....................................11 2-2-1 數值模式之穩定性...............................11 2-2-2多重格網之演算時距..............................12 2-2-3多重格網之邊界銜接..............................13 第三章 資料整合與輸入....................................14 3-1 模擬區域...........................................14 3-1-1 八掌溪北岸.....................................14 3-1-2 八掌溪南岸.....................................15 3-2 雨量資料...........................................15 3-2-1 QPESUMS簡介 ..................................16 3-2-2 雷達回波估計雨量方法...........................17 3-2-3 雷達-雨量站整合降雨估計法......................17 3-3 地文資料...........................................18 3-3-1 DTM數值地形...................................18 3-3-2 資料之處理.....................................19 3-3-3 土地利用型態...................................20 3-4 地表格網與QPESUMS格網之套疊......................20 第四章 模擬結果與比較....................................21 4-1 雨量資料之比較.....................................21 4-2 全區120公尺格網模擬結果............................23 4-3 全區120公尺格網與局部細化120公尺格網對應區域 模擬結果與比較...................................25 4-3-1 八掌溪南北岸局部模擬區域結果比較...............26 4-3-2 演算效率.......................................28 4-4 局部細化120公尺格網模擬區域之淹水體積..............29 第五章 結論與建議........................................31 5-1 結論...............................................31 5-2 建議...............................................32 參考文獻.................................................34 附錄A 模式架構流程圖....................................80 附錄B 徐昇氏多邊型法....................................83 | |
dc.language.iso | zh-TW | |
dc.title | 流域格網局部細化之淹水模擬 | zh_TW |
dc.title | Down-scale Inundation Simulations for Local Area of a Basine | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 游保杉,葉克家,鄧慰先 | |
dc.subject.keyword | 淹水模式,多重格網模擬,定量降水預報系統, | zh_TW |
dc.subject.keyword | Inundation model,multi-scale simulation,QPESUMS system, | en |
dc.relation.page | 36 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2008-07-28 | |
dc.contributor.author-college | 生物資源暨農學院 | zh_TW |
dc.contributor.author-dept | 生物環境系統工程學研究所 | zh_TW |
顯示於系所單位: | 生物環境系統工程學系 |
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