黑潮对南海东北部声速场影响研究  

Study on the Impact of the Kuroshio Current on the Sound Speed Field Near the Northeastern South China Sea

作　　者：李韦华[1] 陈鸿志[2] 江国进[2] 管启亮 

机构地区：[1]91439部队96分队 [2]91388部队95分队

出　　处：《海洋技术》2014年第2期35-41,共7页Ocean Technology

基　　金：总参军内科研项目资助(2012-81)

摘　　要：对所收集到的南海海区的温度、盐度和深度历史资料进行了声速的计算与统计分析,结果表明,南海东北部海区存在明显的黑潮水入侵南海现象。针对这一现象及该海区的特殊地理环境,引入δ坐标系,对整个南海海区声速分表层、中层、底层对其自相关指数进行了分析与探讨,分别计算得到了它们的时空相关尺度。结果表明,4个季节的表层时空相关尺度明显大于中层与底层,中层与底层的时空相关尺度基本一致,而夏季的时空相关尺度明显大于其它3个季节。Calculation and statistical analysis of sound speed have been conducted based on the historical data of temperature, salinity and depth of the South China Sea. The results indicate that the northeast of the South China Sea has an obvious phenomenon of Kuroshio invasion. In view of this phenomenon and the special geographical environment of this sea area, the δ coordinate system is introduced to analyze and investigate the auto-correlation indices of the surface, middle and bottom levels of sound speed in the whole South China Sea, with their temporal-spatial correlation scales respectively computed. The results indicate that the correlation scale of the surface level is significantly larger than that of the middle and bottom levels, and the correlation scale of the middle level is approximately consistent with that of the bottom level throughout four seasons. However, the correlation scale of summer is obviously larger than that of the other three seasons.

关 键 词：声速剖面 自相关指数 相关尺度 T-S曲线 

分 类 号：P717[天文地球—海洋科学]