中尺度涡旋对海洋建设的影响及南海分布特征分析

The Influence of Mesoscale Vortex on Marine Construction and the Analysis of Distribution Characteristics in the South China Sea

中尺度涡作为海洋中广泛存在的中尺度现象,会对潜艇水下探测产生显著影响,同样会对海洋中的能量交换和物质流动产生显著影响,进而影响海洋生物资源的分布。本文首先介绍中尺度涡的成因与类别,进一步对南海中尺度涡的时空分布特征展开分析,结果表明:南海地区中尺度涡存在明显的季节变化特征,冬季冷涡多于暖涡且冷涡强度更大,夏季相反。在空间分布上,南海中尺度涡整体上呈东北–西南分布,且东北部数量远大于西南部。大部分涡旋向西移动,春夏涡旋主要向西北方向移动,秋冬涡旋主要向西南方向移动。

As a widespread mesoscale phenomenon in the ocean, mesoscale eddies will not only have a significant impact on submarine underwater detection, but also have a significant impact on energy exchange and material flow in the ocean, and then af-fect the distribution of marine biological resources. In this paper, the causes and categories of mesoscale eddies are introduced, and the temporal and spatial distribution characteristics of mesoscale eddies in the South China Sea are further analyzed. The results show that there are ob-vious seasonal variation characteristics of mesoscale eddies in the South China Sea. Cold eddies are more than warm eddies in winter and the intensity of the cold is stronger, on the contrary in sum-mer. In terms of spatial distribution, the mesoscale eddies in the South China Sea are distributed from northeast to southwest as a whole, and the number of mesoscale eddies in the northeast is much larger than that in the southwest. Most of the eddies move westward, the spring and summer eddies mainly move to the northwest, and the autumn and winter eddies mainly move to the southwest.