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根据 1 959～ 1 996年 3～ 6月水温资料 ,按 30′× 30′方区统计计算了东海西北部中层冷水的 8个示性特征值 ,并绘制了平面分布图。分析结果表明 ,东海西北部中层冷水于 3月出现 ,4月形成 ,5月达到盛期 ,6月消衰 ,其生消规律具有明显的季节性 ;其出现的海区为 2 8°～31°N ,1 2 4°E以西 (即台湾暖流路径 )海域 ,具有明显的地域性。示性特征的时—空分布变化反映出 :在形成期 ,地域性表现充分 ;在消衰期 ,反映出中层冷水下方的台湾暖流对它的影响明显 ;而在盛期 ,示性特征则为上述的过渡型。这为探讨海洋热、动力因子对其生消机制的影响奠定了实验基础。
According to the water temperature data from March to June of 1959 ~ 1996, eight representative eigenvalues of the middle-level cold water in the northwestern East China Sea are calculated by 30 ’× 30’ square area, and the plane distribution map is drawn. The results show that the middle-level cold water in the northwestern East China Sea appeared in March, formed in April, reached its peak in May, and disappeared in June, with a clear seasonal pattern of occurrence; the sea area appearing in the area was 28 ° -31 ° N, west of 1204 ° E (ie, the warm current of Taiwan), with obvious regional characteristics. The time-space distribution of the features shows that: during the formation period, the regional performance is sufficient; in the decay period, it reflects that the warmth of Taiwan under the middle-level cold water has obvious influence on it; The above transitional type. This laid the experimental foundation for exploring the influence of ocean heat and dynamical factors on the mechanism of its elimination.