海床蚀积变化电阻率原位监测系统设计与实验

发布时间：2018-03-11 14:28

  本文选题：海床　切入点：沉积物　出处：《海洋地质与第四纪地质》2016年01期 　论文类型：期刊论文

【摘要】：设计了一套基于电阻率方法的海床蚀积变化原位监测系统,该系统能够在数米水深处实施长距离自动监测。系统同时采用USB海量存储技术和GPRS无线通信两种数据存储和传输方式,可以实现长期无人值守原位监测。利用海水和沉积物两者电阻率的差异性,把布设等间距环形电极的探杆置入海床,连续测定海水和海床沉积物界面上下一定范围内的电阻率,找到电性发生显著变化的区间,并采用合适的方法判定界面的具体位置。界面位置随时间的变化,即为海床的蚀积变化。实验室测试结果表明该系统测试的沉积过程中蚀积变化数据与实际数据相符,最大误差0.3cm。说明应用该系统测量海床蚀积状况具有可行性。
[Abstract]:A set of in-situ monitoring system of seabed erosion change based on resistivity method is designed. The system can carry out long distance automatic monitoring in the depth of several meters of water. At the same time, the system adopts USB mass storage technology and GPRS wireless communication two kinds of data storage and transmission mode. Long-term unattended in-situ monitoring can be realized. By using the difference of resistivity between seawater and sediment, the probe rod with equidistant annular electrodes is placed on the seabed, and the resistivity of the interface between seawater and seabed sediment is continuously measured. Find out the range where the electrical properties change significantly, and use the appropriate method to determine the specific position of the interface. The position of the interface changes with time, The results of laboratory tests show that the change data of corrosion deposits measured by the system are consistent with the actual data, and the maximum error is 0.3 cm. The results show that it is feasible to use the system to measure the corrosion deposition of the seabed.
【作者单位】： 青岛理工大学理学院;中国海洋大学环境科学与工程学院;华侨大学土木工程学院;
【基金】：国家“863”计划资助项目(2008AA09Z109) 国家自然科学基金项目(40876042、41306051)
【分类号】：P715
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本文编号：1598576