不同CTD数据垂向分辨率对黑潮地转流动力计算的影响分析
发布时间：2018-07-22 11:09
【摘要】：基于日本海洋信息中心提供的东海黑潮PN断面垂向分辨率不同的2种CTD数据,采用动力高度法计算了2000—2011年的断面流速。通过对49个航次的流场结构、最大流速、流幅、流量等黑潮特征值的对比,分析了不同数据垂向分辨率对黑潮地转流动力计算的影响。结果表明:数据垂向分辨率不同对东海黑潮的流量几乎没有影响,对平均流幅影响很小,对流核位置略有影响,但对平均流核个数、平均最大流速影响较大。2种数据对应的流场差异主要有:与低分辨率数据对应的流场相比较,高分辨率数据对应的流场流核区流速较大、平均流核数偏多。不同流核结构在2种数据对应的流场中出现概率差别较大,低分辨率数据结果中的单核结构出现概率最高,高分辨率数据结果中的双核结构出现概率最高。
[Abstract]:Based on two kinds of CTD data with different vertical resolution of PN section of Kuroshio in the East China Sea provided by Japan Ocean Information Center, the velocity of cross-section from 2000 to 2011 was calculated by using dynamic height method. By comparing the Kuroshio eigenvalues such as the flow field structure, the maximum velocity, the flow amplitude and the flow rate of 49 voyages, the influence of different vertical resolution of the data on the calculation of the Kuroshio geostrophic flow force is analyzed. The results show that the vertical resolution of the data has little effect on the Kuroshio flow in the East China Sea, but has little effect on the mean flow amplitude, and a slight effect on the location of the convection nucleus, but on the average number of the current nuclei. Compared with the flow field corresponding to low resolution data, the flow field core area corresponding to high resolution data is larger than that of low resolution data, and the average number of flow nuclei is more than that of high resolution data. The probabilities of different flow core structures in the flow fields corresponding to two kinds of data are quite different, the probability of appearing single core structures in low-resolution data results is the highest, and that of binuclear structures in high-resolution data results is the highest.
【作者单位】： 山东科技大学测绘科学与工程学院;国家海洋局第一海洋研究所;
【分类号】：P731.27
，
本文编号：2137251
[Abstract]:Based on two kinds of CTD data with different vertical resolution of PN section of Kuroshio in the East China Sea provided by Japan Ocean Information Center, the velocity of cross-section from 2000 to 2011 was calculated by using dynamic height method. By comparing the Kuroshio eigenvalues such as the flow field structure, the maximum velocity, the flow amplitude and the flow rate of 49 voyages, the influence of different vertical resolution of the data on the calculation of the Kuroshio geostrophic flow force is analyzed. The results show that the vertical resolution of the data has little effect on the Kuroshio flow in the East China Sea, but has little effect on the mean flow amplitude, and a slight effect on the location of the convection nucleus, but on the average number of the current nuclei. Compared with the flow field corresponding to low resolution data, the flow field core area corresponding to high resolution data is larger than that of low resolution data, and the average number of flow nuclei is more than that of high resolution data. The probabilities of different flow core structures in the flow fields corresponding to two kinds of data are quite different, the probability of appearing single core structures in low-resolution data results is the highest, and that of binuclear structures in high-resolution data results is the highest.
【作者单位】： 山东科技大学测绘科学与工程学院;国家海洋局第一海洋研究所;
【分类号】：P731.27
，
本文编号：2137251
本文链接：https://www.wllwen.com/kejilunwen/haiyang/2137251.html
