本研究使用數值模式POM（Princeton Ocean Model）模式模擬高屏峽谷的內潮波動行為，模式設定含不同地形（平坦、斜坡、真實峽谷地形）及水體分層與否來討論地形與分層效應對流場的變化；模擬時間共十天（間隔時間1 小時），四周均設定輻射邊界，西邊以全球潮位模式TPXO 6.2 取得半日潮（M2）與混合潮（M2+K1）水位作為驅動力。模擬測試結果顯示分層及峽谷地形為內潮產生之必要條件，內潮在高屏峽谷產生時，表層較底層有3~5 小時延遲且底層流速較表層強，此結果與實測結果印證良好。模擬平坦地形及斜坡地形均無上下層流速延遲現象。實際高屏峽谷地形模擬之設定水平解析度為500 公尺，垂直分41 層，結果顯示內潮沿峽谷主軸波動，介面深度約在100~200 公尺。計算結果之斜壓能量（Energy Flux）顯示高屏峽谷內潮產生位置約在峽谷口附近，峽谷邊緣陸棚、海脊處，內潮產生後沿著峽谷往岸邊傳輸，能量隨距離增加而遞減。

It is generally understood that tidal currents ominated the flow field in many submarine canyons, and internal tide may be an order of magnitude more energetic than that of barotropic. The internal tide can be generated and amplified in a marine environment with the strong vertical density interface. The barotropic tides were known to play the dominant
role in driving the internal tides at the topographic relief or shelf break.This research tries to look at the mechanisms of internal tides generation and propagation in the Kaoping Submarine Canyon off southwestern Taiwan, using Princeton Ocean Model (POM) with different settings. The model was tested with bottom topography of flat, a slope and real water
depth, with and without vertical stratifications. The model settings are grid size 500m, simulate period days, radiation boundary condition at 4 sides. The model forcings are sea level variations at the west side, both semidiurnal tide (M2) and mixed tide (M2+K1) based on OSU tidal model TPXO 6.2. The results suggest that the offshore M2 tidal forcing
can generate large internal tidal currents within the canyon with vertical density stratification. The internal tidal currents at the upper-layer of the canyon lag that of lower-layer 3~5 hours. There is no time lag and no
amplification of current in the canyon if there is no stratification. There is a transition zone of minimum flow at depth of about 100-200m. Below the interface, the amplitude of semidiurnal internal tidal current increased with water depth in the canyon. The simulated density contours suggest a 120m amplitude vertical fluctuation center at 150m depth, with 5℃ temperature fluctuation. The computed baroclinic energy flux indicates that the energy in lower layer of the canyon is stronger than that of upper
layer. The high energy flux appears at the canyon foot and rim, and propagates along the canyon axis landward.

章次 頁次
謝誌..................................................................................... i
摘要..................................................................................... ii
Abstract.............................................................................. iii
目 錄.....................................................................................v
圖目錄................................................................................. vii
表目錄................................................................................. ix
第一章、 緒論.....................................................................1
1-1 高屏峽谷簡介...............................................................1
1-2 內潮文獻回顧...............................................................5
1-3 研究目的.......................................................................9
第二章、 數值模式............................................................10
2-1 模式介紹......................................................................10
2-2 模式設定......................................................................13
2-2.1 水深地形分類...........................................................13
2-2.2 邊界條件設定...........................................................14
2-3 模式驗證......................................................................18
第三章、結果與討論.........................................................20
3-1 地形與分層之影響......................................................20
3-2 平面流場分析..............................................................26
3-3 垂直剖面分析..............................................................29
3-4 斜壓能量通量(energy flux) .......................................34
第四章、 結論與建議........................................................39
4-1 結論..............................................................................39
4-2 建議..............................................................................40
參考文獻.............................................................................41
附件一、POM 模式介紹...................................................44

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