对南沙海区观测得的部分温度脉动一深度序列作了正态检验。检验时先用根据序列的自回归模型构成的滤波器滤去序列元素间之相关性产生白噪声序列 ,而后用 χ2一拟合优度检验法对此白噪声序列作正态性独立同分布检验并对偏度与峰度作了检验。检验结果表明 ,除少数样本近似正态分布外 ,大多数样本的分布为非正态的 ,这是在样本内小于内波尺度的不可逆细结构所起的作用 A series of normalized tests of temperature pulsation-depth series of observed Nansha sea area were made. At the time of the test, the white noise sequence was generated by filtering the correlation between sequence elements with the filter composed of the autoregressive model according to the sequence, and then the white noise sequence was tested for the normality and the independent normal distribution by the χ2-goodness-of-fit test And tested skewness and kurtosis. The test results show that the distribution of most samples is non-normal, except for a few samples which are approximately normal distribution, which is the function of the irreversible fine structure which is smaller than the inner wave scale in the sample