太平洋波高熵的分布变化规律研究

Study of Wave Height Entropy Distribution Variabilitiesin the Pacific Ocean

使用1992年10月到1998年12月连续共75个月、230个重复周期的Topex/Poseidon卫星高度计有效波高资料,对南、北太平洋波高熵的空间分布特征和时间变化规律进行了研究。统计分析了太平洋波高熵的多年的空间分布特征和多年各月的时间变化规律。结果表明,太平洋波高熵呈现出中间低、南北高的马鞍形空间分布特征和明显季节变化的规律,与太平洋的平均有效波高和气候分布特征和变化规律相一致。给出了南北太平洋模拟波高熵的计算公式及计算稳定性检验。

The Topex/Poseidon satellite altimeter significant wave height(SWH) data from October 1992 to December 1998 are used to study the wave height entropy variabilities in the Pacific Ocean, and the statistical analysis of spatial distributions and temporal variabilities of wave height entropy in the Pacific Ocean is made. It is shown from the analysis results that the wave height entropy in the Pacific Ocean has obvious seasonal variabilities and shows saddle distributions with low values in the equatorial area and high values in the northern and southern areas, which is consistent with the distribution characteristics and variabilities of mean SWH and climate in the Pacific Ocean. The calculation formula and computational stubility test for the simulated wave height entropy in the northern and sowthern Pacific Ocean are also given.