發(fā)布時(shí)間：2018-07-22 11:09

【摘要】：基于日本海洋信息中心提供的東海黑潮PN斷面垂向分辨率不同的2種CTD數(shù)據(jù),采用動(dòng)力高度法計(jì)算了2000—2011年的斷面流速。通過(guò)對(duì)49個(gè)航次的流場(chǎng)結(jié)構(gòu)、最大流速、流幅、流量等黑潮特征值的對(duì)比,分析了不同數(shù)據(jù)垂向分辨率對(duì)黑潮地轉(zhuǎn)流動(dòng)力計(jì)算的影響。結(jié)果表明:數(shù)據(jù)垂向分辨率不同對(duì)東海黑潮的流量幾乎沒(méi)有影響,對(duì)平均流幅影響很小,對(duì)流核位置略有影響,但對(duì)平均流核個(gè)數(shù)、平均最大流速影響較大。2種數(shù)據(jù)對(duì)應(yīng)的流場(chǎng)差異主要有:與低分辨率數(shù)據(jù)對(duì)應(yīng)的流場(chǎng)相比較,高分辨率數(shù)據(jù)對(duì)應(yīng)的流場(chǎng)流核區(qū)流速較大、平均流核數(shù)偏多。不同流核結(jié)構(gòu)在2種數(shù)據(jù)對(duì)應(yīng)的流場(chǎng)中出現(xiàn)概率差別較大,低分辨率數(shù)據(jù)結(jié)果中的單核結(jié)構(gòu)出現(xiàn)概率最高,高分辨率數(shù)據(jù)結(jié)果中的雙核結(jié)構(gòu)出現(xiàn)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.
【作者單位】： 山東科技大學(xué)測(cè)繪科學(xué)與工程學(xué)院;國(guó)家海洋局第一海洋研究所;
【分類號(hào)】：P731.27
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本文編號(hào)：2137251