摘要
根据对高分辨率的并行海洋气候模式输出的较长时间序列的海面高度（ＳＳＨ）场的分析，推断在吕宋海峡附近海区常年存在吕宋海峡黑潮流套，该流套出现于吕宋海峡的中部和北部，表现为一个舌状的ＳＳＨ的高值中心自海峡东部的太平洋向西扩展到南海北部，大致到达１１０°Ｅ的位置，但其位置、形状、强度等表现季节变化，年际变化和季节内时间尺度变化的特征。在吕宋海峡东侧的大洋上，经常出现位置和范围时有变化的反气旋涡，与之对应，在ＳＳＨ的月平均经向和纬向剖面上，吕宋海峡东侧的大洋上有永久存在的ＳＳＨ高值中心。另外在１９９５年１～７月期间有一次完整的黑潮流环脱离黑潮主体并在南海北部向西南方向移动的过程。
Based on the analysis of a long time series of Sea Surface Height, which is an ouput from the high resolution Parallel Ocean Climate Model, a permanent Kuroshio loop is inferred in the Luzon Strait, taking the shape as a tongue in the SSH distribution. It extends from the western Pacific to the northern South China Sea crossing the Luzon Strait, reaching as far as 118°E to the west. There are seasonal variations, interannual variations and intraseasonal variations in the location, shape and intensity of the Kuroshio loop. There often appears an anticyclonic eddy to the east of the Luzon Strait, whose location and scope vary with time, and corresponds to a persistent height SSH based on the monthly mean zonal or meridional profile of SSH. During January through July of 1995, a complete process of a ring detached from the Kuroshio and moving southwest in northern South China Sea is shown in the SSH distribution.
基金
国家自然科学基金
