2009-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/703842摘要：台灣東北海域地處東海陸棚邊緣、琉球島弧及沖繩海槽南端交會處，黑潮流由南而來，台灣海峽水由西南來，長江沖淡水在冬天時由西北而來，造成此處洋流、水文、生地化參數變化複雜。東北角海域是多種外力角力之場所，同時也是容易受到攪局的地方，二十多年前的KEEP計畫到最近的LORECS計畫，對應從反流、冷渦的發現，三峽大壩截流的影響到最近颱風、沙塵暴等對當地生地參數的影響等，一系列的研究一方面增廣了我們對東北角海域複雜度的了解，另方面也衍生了一些我們對環境變動的不了解，例如：從衛星拍攝的影像看來，高頻內波似乎時有時無，黑潮流軸的變化多端，以及相似路徑和強度的颱風對海溫及生地化參數變化的影響不一等。本計畫擬針對這些問題，探討內潮、內波的生成，內潮行為受黑潮流的影響，黑潮流軸的自變和因變，及生地化參數和環境變動的關係。<br> Abstract: The topography in the sea off northeastern Taiwan is complicated due to the intersection of the continental shelf break of the East China Sea, the southwestern ends of both the Ryukyu Islands Chain and the Okinawa trough. Not surprisingly, the oceanic environment, including currents, water mass as well as biogeochemical parameters there is complicated as well due to the meet of the strong Kuroshio coming from south, the outflow from the Taiwan Strait and the Changjiang diluted water from north in winter. The in-situ measurements conducted in the projects KEEP two decades ago and the LORECS recently revealed not only the physical structures such as the “counter current” and the “cold dome” but also the biogeochemical influences from the operation of the Three Gorge Dam, the dust storm from the northern China and typhoons. Along with these remarkable accomplishments, more uncertainties, e.g. the presence of the high frequency internal waves, the movement of Kuroshio’s axis and its relationship with typhoons and the mechanism for the upwelling, are generated. With these uncertainties in mind, this study aims to study the generation of internal tides/waves, the influence of Kuroshio on their behavior, the forced and spontaneous variations of the Kuroshio, and the biogeochemistry variability related to the complex oceanic and atmospheric factors in the sea off the northeastern Taiwan.黑潮內潮波陸棚邊緣交互作用生地化參數Kuroshiointernal tides/wavescontinental shelf breakinteractionbiogeochemical parameters