论文部分内容阅读
根据现有1907—1990年南海大面调查资料,按1°×1°网格进行逐月的标准水层的温度统计。在此基础上采用3次样条函数的插值方法计算出整个南海温跃层的深度、厚度和强度并予以相应分析。分析表明,南海温跃层主要分为两种类型:第一类为辐射型,主要分布在南海北部的陆架区内,季节变化显著;第二类为不同水体叠置型,主要分布在广大深水区,它长年存在,季节变化较小。一种温跃层的一维积分预报模式,该模式是基于忽略热平流作用和水平热扩散的前提下,从局部热平衡方程出发,建立了受海面热收支及风混合作用下求解温度垂直分布及温跃层的时空变化。在南海北部水深约300m处进行了单站温跃层后报,结果表明,温跃层的深度、厚度和强度的相对误差均在30％以下。
According to the existing 1907-1990 survey data of the South China Sea, the monthly temperature of 1 ° × 1 ° grid water temperature statistics. Based on this, the depth, thickness and strength of the thermocline in the whole South China Sea are calculated by the interpolation method of cubic spline function and correspondingly analyzed. The analysis shows that there are two types of thermoclines in the South China Sea: the first type is radiative type, which is mainly distributed in the continental shelf area in the northern part of the South China Sea with significant seasonal variation; the second type is a superimposed type of water body and is mainly distributed in deepwater areas It exists for many years with little change in the seasons. Based on the local heat balance equation and based on ignoring the effects of thermo-advection and horizontal heat diffusion, a model of one-dimensional integral prediction of thermocline is established. Based on the thermal balance of the sea surface and the wind mixing, a vertical temperature distribution And thermocline temporal and spatial changes. A single-station thermocline post-report was carried out at a depth of about 300 m in the northern South China Sea. The results show that the relative errors of depth, thickness and strength of the thermocline are all below 30%.