最近21年厄加勒斯反曲的变化
发布时间：2018-12-10 17:33
【摘要】：非洲南部厄加勒斯泄漏过程将印度洋的暖咸水输入大西洋,是大洋环流中联系印度洋和大西洋的关键过程,厄加勒斯反曲的位置和强度影响此泄漏过程。文章利用1993—2013年绝对海表高度数据来确定厄加勒斯环流反曲点、厄加勒斯流和回流的位置,发现厄加勒斯流和回流所在的位置年际变化较小,而厄加勒斯环流反曲点位置则年际变化显著;厄加勒斯环流反曲点位置的纬向变动范围为14°E~19°E,经向为38.5°S~40°S,东西向变化范围较大。反曲点位置与厄加勒斯流强度的相关分析表明,厄加勒斯流增强(减弱),反曲点位置偏西(东)。
[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 掳E ~ (19) 掳E, the meridional direction is 38.5 掳S ~ (+) 40 掳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).
【作者单位】： 南京信息工程大学极地气候系统与全球变化实验室;
【基金】：国家自然科学基金面上项目(41276200) 江苏省创新创业团队计划项目资助~~
【分类号】：P731.27
本文编号：2370956
[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 掳E ~ (19) 掳E, the meridional direction is 38.5 掳S ~ (+) 40 掳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).
【作者单位】： 南京信息工程大学极地气候系统与全球变化实验室;
【基金】：国家自然科学基金面上项目(41276200) 江苏省创新创业团队计划项目资助~~
【分类号】：P731.27
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