黑潮与东海水交换定量估算

发布时间：2018-04-19 13:21

本文选题：东海 + 黑潮　；参考：《中国科学院研究生院(海洋研究所)》2016年硕士论文

【摘要】：利用ROMS (Regional Ocean Modeling System)数值模式模拟东海地区的多年平均流态。数值模拟结果在黑潮的流速、路径、流量等方面与近年来对黑潮的认识相一致。利用模式结果分析表明,东海具有复杂的环流结构,主要由东海沿岸流、台湾暖流、对马暖流与东海黑潮组成,并具有明显的季节性变化。黑潮对东海的向岸入侵主要发生在台湾东北与九州西南地区。在台湾东北地区黑潮表层的向岸入侵受到台湾暖流消长的极大影响。冬季(2月)表层入侵最为强进。春季(5月)、夏季(8月)与秋季(11月)黑潮表层入侵减弱,特别是夏季(8月),表层入侵几乎不发生。在九州西南地区,黑潮以分离分支形式向北入侵陆架。入侵具有明显季节变化,在冬季最强,夏季最弱。计算东海及邻近海域主要水道的水通量。结果表明：台湾海峡、台湾-西表岛之间水道是海水进入东海的主要通道,对马海峡、吐噶喇海峡、大隅海峡与西表岛-宫古岛-冲绳岛-奄美大岛之间水道是海水流出东海的主要通道。分析PN断面的流量的变化特征,结果表明黑潮流量在春季与夏季较大,秋季与冬季较小,年平均流量为24.16Sv,与前人研究结果一致。计算跨越200米等深线的年平均净向岸体积输送为0.99Sv,在台湾东北与九州西南地区表现为黑潮入侵陆架地区,年平均入侵流量分别为1.907Sv与0.065Sv,在黑潮中段地区,跨越200米等深线流量呈现交错状分布,年平均净通量为0.982Sv,表现为由东海陆架地区流向黑潮。上述结果对黑潮与东海之间物质与能量交换研究有一定参考价值。
[Abstract]:The numerical model of ROMS Regional Ocean Modeling system is used to simulate the annual mean flow pattern in the East China Sea.The numerical simulation results are consistent with the Kuroshio's understanding of the Kuroshio velocity, path and flow rate in recent years.The results of model analysis show that the East China Sea has a complex circulation structure, which is mainly composed of the coastal currents of the East China Sea, the Taiwan warm current, and the Kuroshio of the East China Sea.The Kuroshio invasion of the East China Sea occurred mainly in northeast Taiwan and southwestern Kyushu.The onshore invasion of the Kuroshio surface in northeastern Taiwan is greatly affected by the rise and fall of the warm current in Taiwan.Winter (February) surface invasion is the strongest.In spring (May), summer (August) and autumn (November), the surface intrusion of Kuroshio weakens, especially in summer (August).In southwestern Kyushu, the Kuroshio invaded the continental shelf in the form of separate branches.The invasion has obvious seasonal variation, the strongest in winter and the weakest in summer.Water fluxes of main waterways in the East China Sea and adjacent waters are calculated.The results show that: the Taiwan Strait, the waterway between Taiwan and the West Table Island is the main channel for seawater to enter the East China Sea.The channel between the Tai Yu Strait and the West Table Island-Miyagu Island-Okinawa Island-the dying Big Island is the main passage for the sea to flow out of the East China Sea.The variation characteristics of PN section discharge are analyzed. The results show that the Kuroshio discharge is larger in spring and summer and smaller in autumn and winter with an annual average discharge of 24.16 Sv, which is consistent with previous studies.The calculated annual average net inward volume across the 200 m isobath is 0.99 Sv, and the Kuroshio invaded continental shelf area in northeastern Taiwan and southwestern Kyushu. The annual average intrusion discharge is 1.907Sv and 0.065 Sv, respectively, in the middle Kuroshio region.The annual average net flux is 0.982Sv, which appears to flow from the East China Sea shelf to the Kuroshio.These results are valuable for the study of material and energy exchange between the Kuroshio and the East China Sea.
【学位授予单位】：中国科学院研究生院(海洋研究所)
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P731.2

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