【摘要】：非洲南部厄加勒斯泄漏過程將印度洋的暖咸水輸入大西洋,是大洋環(huán)流中聯(lián)系印度洋和大西洋的關(guān)鍵過程,厄加勒斯反曲的位置和強(qiáng)度影響此泄漏過程。文章利用1993—2013年絕對(duì)海表高度數(shù)據(jù)來確定厄加勒斯環(huán)流反曲點(diǎn)、厄加勒斯流和回流的位置,發(fā)現(xiàn)厄加勒斯流和回流所在的位置年際變化較小,而厄加勒斯環(huán)流反曲點(diǎn)位置則年際變化顯著;厄加勒斯環(huán)流反曲點(diǎn)位置的緯向變動(dòng)范圍為14°E~19°E,經(jīng)向?yàn)?8.5°S~40°S,東西向變化范圍較大。反曲點(diǎn)位置與厄加勒斯流強(qiáng)度的相關(guān)分析表明,厄加勒斯流增強(qiáng)(減弱),反曲點(diǎn)位置偏西(東)。
[Abstract]:It is the key process of connecting the Indian Ocean and Atlantic Ocean in the ocean circulation that the warm salt water in the Indian Ocean is fed into the Atlantic Ocean by the Ogharest leakage process in southern Africa. The position and intensity of the Ogharest inversion affect the leakage process. In this paper, the absolute sea surface height data from 1993 to 2013 are used to determine the position of the inverse curvature point, the return current and the reflux of the Ogharest circulation. It is found that the interannual variation of the location of the Urgis current and the reflux is relatively small. On the other hand, the position of the inverse curvature point of the Urgis circulation varies significantly between years. The latitudinal variation range of the inverse curvature point of the Urgis circulation is 14 擄E ~ (19) 擄E, the meridional direction is 38.5 擄S ~ (+) 40 擄S, and the east-west direction is larger. The correlation analysis between the position of the inverse curved point and the intensity of the Orgharest current shows that the position of the reflexive point is westward (east) and the position of the reflexive point is stronger (weakened).
【作者單位】： 南京信息工程大學(xué)極地氣候系統(tǒng)與全球變化實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金面上項(xiàng)目(41276200) 江蘇省創(chuàng)新創(chuàng)業(yè)團(tuán)隊(duì)計(jì)劃項(xiàng)目資助~~
【分類號(hào)】：P731.27

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