• 沒有找到結果。

沉型內孤立波維持其型態而不發生轉化過程,此結果驗證了反氣旋式渦漩與內潮 為兩主要影響轉化過程的因素。

此外,我們利用 ADCP 的流速資料計算下沉型內孤立波和上舉型內孤立波的 動能,我們發現內孤立波於 LR1 與 LR2 的總動能近乎相同,若比較下沉型內孤立 波的部分則發現 LR2 的動能少於 LR1 約 10%,又 LR2 之下沉型內孤立波與上舉型 內孤立波的動能呈現正相關,因此我們推論 LR2 的上舉型內孤立波之能量係由 LR1 的下沉型內孤立波之能量轉化而來,然轉化過程的能量轉換還需考慮 APE 的部分,

因為缺乏水文資料,我們無法估算 APE,不過於上ㄧ章曾提及,Lien et al. [2014]

的研究結果指出,下沉型內孤立波的 KE 與 APE 大小幾乎相等,因其研究區域與 本研究使用的 ADCP 錨碇位置相近,我們估計 ADCP 所量測的內孤立波可能也有 類似的情形。

由於內孤立波的轉化過程對於背景流場的分層結構與流場之變化非常敏感,

若要詳細描述其動力機制,無論是水文或流速資料缺一不可,本研究雖受限於缺 乏同時的水文資料,經 ARGO 浮標的輔助,分析的結果顯示氣旋式渦漩與內潮所 造成之水文場變化影響了當地內孤立波的上舉型/下沉型型態。此為本區域第一個 觀測例證,對當地的小尺度紊流混合、生地化、及聲波傳遞影響有待未來繼續深 入研究。

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