本文選題：渦旋 + 上升流��； 參考：《大連海洋大學》2016年碩士論文

【摘要】：本文利用1992年到2014年的海面高度計數(shù)據(jù),我國第29次南極考察CTD數(shù)據(jù)以及第31次南極考察ADCP數(shù)據(jù)來分析南極普里茲灣的渦旋、上升流以及水團的特點,結合29次南極考察的磷蝦資源量信息,旨在研究普里茲灣物理海洋要素對南極磷蝦資源分布的影響�；谟^測數(shù)據(jù)信息,主要對普里茲灣內5個南北向斷面進行對比分析。通過處理海面高度計數(shù)據(jù),觀測所繪制普里茲灣海表渦旋圖可知渦旋的主要生成機制為海表風場,普里茲灣內常常出現(xiàn)獨立且中心深度較大的冷渦或暖渦,同時,灣內海冰的消融時間常早于其他海域,故灣內可能存在上升暖流;通過分析CTD數(shù)據(jù)繪制的溫鹽等值線圖發(fā)現(xiàn)5個斷面都存在上升流,輔以ADCP數(shù)據(jù)繪制的斷面流速矢量圖,可知普里茲灣陸架坡折區(qū)常存在上升流;通過定性綜合分析法、濃度混合分析法以及聚類分析法對普里茲灣水團進行的分析可知2013年南半球夏季普里茲灣共存在水團:夏季表層水、冬季陸架混合水、冬季冰架混合水、冰架水、繞極深層水和南極底層水,其中繞極深層水的南侵運動受陸坡阻礙常形成上升流,所以200米以淺海域也可發(fā)現(xiàn)繞極深層水的蹤跡。分析磷蝦資源量信息可知磷蝦常趨向分布于陸架破折區(qū)且富含營養(yǎng)鹽的暖水團中,這些暖水團通常由繞極深層水涌升而成。最終對應渦旋、上升流、水團以及磷蝦資源量信息可知,以上物理海洋要素可直接影響磷蝦的分布。
[Abstract]:Based on the sea surface altimeter data from 1992 to 2014, the CTD data from the 29th Antarctic expedition and the ADCP data from the 31st Antarctic expedition, the characteristics of vortex, upwelling and water mass in Prydz Bay, Antarctica, are analyzed in this paper.The effects of physical ocean elements of Prydz Bay on the distribution of Antarctic krill resources were studied based on the information of the resources of krill from 29 Antarctic expeditions.Based on the observational data, five north-south sections in Prydz Bay are compared and analyzed.By processing sea surface altimeter data, the observed surface vortex map of Prydz Bay shows that the main mechanism of vortex generation is sea surface wind field, and there are often independent cold or warm vortices in Prydz Bay with relatively deep center, and at the same time,The melting time of sea ice in the bay is usually earlier than that in other sea areas, so there may be rising warm current in the bay. Through the analysis of the warm and salt isoline map drawn by CTD data, it is found that there is upwelling current in all the five sections, supplemented by the velocity vector map of the section drawn by ADCP data.The upwelling is often found in the slope break of the Prydz Bay shelf.Concentration mixing analysis and cluster analysis of Prydz Bay water masses in the Southern Hemisphere in 2013 showed that there were water masses in the Prydz Bay in summer: surface water in summer, mixed water in continental shelf in winter, mixed water in ice shelf in winter, ice shelf water in winter.The circumpolar deep water and the Antarctic bottom water, in which the southward transgression of the circumpolar deep water is often blocked by the continental slope, often forms an upwelling current, so the trace of the circumpolar deep water can also be found in the shallow sea area of 200 meters.By analyzing the resource information of krill, it is found that krill tends to be distributed in warm water masses which are rich in nutrients in the broken area of continental shelf, and these warm water masses are usually formed by the upwelling of water around the very deep layer.According to the information of vortex, upwelling, water mass and krill resources, the above physical ocean elements can directly affect the distribution of krill.
【學位授予單位】：大連海洋大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：Q958.8;P731

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