珠江河口原型观测平台水文数据处理和分析软件开发及应用

Software Development and Application of Hydrologic Data Processing and Analysis for the Field Observation Platform in Pearl River Estuary

随着珠江河口原型观测平台的12个浮标站陆续投入使用,将获取海量的水文要素实测数据,如何迅速快捷的提取所需要的数据并进行处理和分析,节省人工并提高效率,是当前急需解决的问题。为此,根据原型观测平台数据的输出特点,开发了相应的水文数据处理和分析软件,实现了自动分层提取、涨落潮时段的识别以及涨落潮时段特征值等的自动计算和输出功能。并应用在澳门机场以南海域7号浮标站枯季4个月约20万个海流数据的处理和分析,显示枯季该海域以落潮流为主,落潮平均流速为0. 3～0. 6 m/s,落潮流主流向以SSW向为主,涨、落潮流平均历时分别为5. 3、18. 7 h,涨潮历时由表层至底层呈显著增加趋势,落潮历时则相反。余流流速由表层的0. 42 m/s减小到底层的0. 13 m/s,余流流向与落潮主流向一致。

With the 12 buoy stations of the field observation platform in the Pearl River Estuary being put into use in succession,a large amount of field data will be obtained subsequently.How to extract the required data quickly and carry out processing and analysis to save manpower and improve efficiency is an urgent problem to be solved.Therefore,according to the output characteristics of field data from the platform,the corresponding software for hydrological data processing and analysis was developed here,which can fulfill the tasks of extracting stratified data needed automatically,distinguishing the period of flood or ebb,calculating and outputting characteristic values during a period of flood or ebb.The software was testified to process and analyze a large amount of about 200000 data for 4 months transferred by No.7 buoy station in the southern sea area to the Macao Airport.It showed that ebb current dominated the sea area in dry season with average ebb velocities of about 0.3~0.6 m/s and the main ebb direction of SSW.The average durations of flood and ebb were 5.3 h and 18.7 h,with the trend of flood duration increasing from water surface to bottom and vice versa for ebb.Residual velocities decreased from 0.42 m/s in the surface to 0.13 m/s in the bottom with depth,while the flowing direction of residual current is consistent with that of ebb.