基于三种测波方法的实测数据对比分析

Comparison and Analysis of the Measured Data Based on Three Wave Measurement Methods

近海海洋工程波浪观测中较为广泛使用的测波方法主要包括压力式测波、声学测波和重力式测波等。三种观测方法各有优势,需根据历史资料、地理环境和任务目的设计合理的观测形式,可以选择一种或多种形式组合的形式,以达到最佳的观测效果。使用GPS测波浮标、AWAC声学海流/波浪测量仪和TWR-2050压力式波潮仪的实测资料进行了对比分析,结果显示,测波浮标与AWAC所测数据相关性较一致;TWR压力波潮仪与AWAC测量的波高趋势基本一致,但周期短、波高小的海域和时间段测量准确度较差。

The wave measuring methods widely used in wave observation for offshore engineering mainly include acoustic, pressure-type, and gravity measuring means, which have different and respective advantages. Based on the difference of historical data, geographical environments, and task objectives, more than one method can be used in order to achieve the optimal measuring effectiveness. In this paper, comparative analysis is carried out with the observations obtained by the GPS wave buoy, AWAC/ADCP and wave-tide gauge TWR-2050, and the result conclusion shows that the correlation is good between the wave buoy and AWAC, that the temporal trend of wave height from wave-tide gauge is agreeable to that of AWAC, but it has lower precision of observation in specific wave conditions with short period and small magnitude.