不同时间间隔的波浪观测数据对其统计结果的影响

采用不同的波浪观测方法所获得的波浪数据的时间间隔不一致,其数据的准确性须进行分析。基于大埕湾逐时周年波浪观测数据,截取不同时间间隔的波浪数据,采用统计和相关分析法,分析不同波浪数据序列的波况、大浪波高以及周期的相关关系。结果表明,不同时间间隔的波浪资料的波况差异较小,大浪波高差异在11. 4%以内,相关性较好;大浪周期差异在78. 1%以内,相关性较差。时间间隔较长的波高可由本文公式计算得出较精确的数据,在有限资料的情况下为工程应用提供更可靠的波高值。

Influence of different time interval of wave observation data on statistical results

The time intervals of the wave data by different wave observation methods are inconformity,and the accuracy of the data needs to be analyzed.Based on the annual wave observation data of hourly interval in Dacheng Bay,we obtain the wave data sets of different time intervals,apply statistical and correlation analysis methods to analyze the correlation of wave condition,wave height and wave period of large waves among different data sets.The results show that the wave condition of the data sets varies little,and the large wave height has a good correlation whose difference is 11.4%,while the large wave period has a poor correlation with 78.1% difference.Wave height data with a long time interval can be calculated by the correlation formula of this paper.It can provide more reliable wave height values for engineering applications in the situation of limited data.