博碩士論文 996202015 詳細資訊

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姓名 林榆翔(Yu-siang Lin)  查詢紙本館藏   畢業系所 地球物理研究所
論文名稱 GRACE衛星重力測量和臺灣地表水循環的探討
(Comparing the GRACE satellite with land hydrology to explore gravity changes in Taiwan)
★ 利用EOF方法討論2004年蘇門答臘地震海平面的變化★ 分析46年間日長變化的小波頻譜以及彈性地球對長期海潮的反應
★ 從大地水準面及地形推估地面淹水狀況★ Spatio-Temporal Variations of Sea-Level for ENSO: Intercomparison Study of Geodetic Satellite Data
★ 地球自轉變化現象探討★ 利用新竹超導重力儀分析地震對於台灣重力的影響
★ 以測高衛星與重力衛星觀測南海水量的年際變化★ 利用海洋測高衛星來觀測大地震 所造成的大地水準面變化
★ GRACE的應用─以大地震及南極環流產生的重力變化為例★ 地球物理資料分析在地震學與測地學的應用
★ Earthquake-induced Normal Modes of Free Oscillation of the Earth Observed in GNSS Networks
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摘要(中) 本研究利用CSR提供的GRACE衛星觀測數據,其GSM版本的資料已扣除掉大氣和海洋模式訊號,只剩下陸地部份;資料所提供的球諧系數解最高至60階,相當於分辨率333公里左右。取最接近台灣中心的一點(E121°, N23°45')為代表做解算,可將臺灣包覆在內。GRACE的重力資料變化主要與地表水循環有密切關係,透過地表水平衡方程式:ΔS/Δt=P-E-R,可以了解之間的關連性。ΔS為流域蓄水量變化,P為降雨量,使用中央氣象局的雨量資料透過權重解算得到;E為蒸發散量,使用Hamon(1979)公式透過溫度資料計算;R為逕流量,取自於水利署統計資料透過單位換算獲得。最後將 GRACE測量所得到的重力資料轉換成等效水深(ΔS),比較兩者之間的差異性,以了解GRACE衛星測量對於臺灣地區重力的精確度,進一步用來分析臺灣地表水循環現象。
摘要(英) In this study we use the GRACE satellite gravity data provided by CSR, of which the GSM version has already had the non-tidal atmosphere and oceans components removed. The highest spherical harmonic degree is 60, corresponding to around 333 kilometers of spatial resolution. We take the point (E121°, N23°45‘) near the central part of Taiwan to represent the whole Taiwan. The GRACE data of gravity changes have relationship with surface water cycle through the surface water balance equation:ΔS/Δt=P-E-R, where ΔS means change in storage converted from GRACE gravity data to the equivalent depth, P means precipitation, E means evapotranspiration, and R means runoff. For P we employ the data of precipitation from the Central Weather Bureau by means of Thiessen Polygons Method. E is modled via the Hamon (1979) algorithm using temperature data. R is obtained from the Water Resources Agency statistics. Comparing between ΔS and P-E-R can help understand the precision of the GRACE Satellite measurement for Taiwan, as well as analyze further the phenomena of surface water cycle in Taiwan. The results show that the correlation is low between the GRACE satellite measurements and the P-E-R. The main reason is Taiwan’’s high terrain, steep slope and rapid runoff, resulting rainfall can not stay long on land.
關鍵字(中) ★ 逕流
★ 重力變化
★ 蒸發散
★ 降雨
★ 水平衡方程式
關鍵字(英) ★ hydrological budget
★ runoff
★ gravity variation
★ precipitation
★ evapotranspiration
論文目次 摘要 i
Abstract ii
致謝 iii
目錄 vi
圖目錄 viii
表目錄 x
第一章 緒論 1
1.1 研究動機和目的 1
1.2 文獻回顧 2
1.3 本文內容 3
第二章 研究區域和衛星介紹 7
2.1 研究區域介紹 7
2.1.1 臺灣區域介紹 7
2.1.2 臺灣地區水文特性 7
2.2 Gravity Recover and Climate Experiment 8
2.2.1 重力衛星(GRACE)介紹 8
2.2.2 GRACE衛星特性 9
2.2.3 GRACE衛星的觀測原理 9
2.2.4 GRACE衛星的目的應用 10
2.2.5 GRACE衛星的數據下載 11
第三章 理論介紹 16
3.1 重力的基本原理 16
3.1.1 萬有引力與重力加速度 16
3.1.2 地球的重力 17
3.1.3 地球的重力場 17
3.2 徐昇式權重法介紹 19
3.2.1 算數平均法(Arithemtical averaging method) 19
3.2.2 徐昇式多邊形法(Thiessen polygons method) 20
第四章 資料處理與計算 24
4.1 地表水平衡方程式介紹 24
4.2 資料處理流程 25
4.3 GRACE衛星資料解算 26
4.4 雨量、溫度資料解算 27
4.5 蒸發散量資料解算 28
4.6 逕流量資料解算 29
第五章 結果分析與討論 42
5.1 全台平均降雨、蒸發散、逕流量分析(2003~2010年) 42
5.2 ΔS/Δt(GRACE) 和 P-E-R 之比較 43
第六章 討論與結論 54
參考文獻 56
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指導教授 趙丰(Benjamin Fong Chao) 審核日期 2012-8-28
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