海浪感应电磁场特性研究  

Research on electromagnetic fields induced by ocean wave

作　　者：张伽伟[1] 姜润翔[1] 贾亦卓 ZHANG Jiawei;JIANG Runxiang;JIA Yizhuo(Academy of Weaponry Engineering,Naval University of Engineering,Wuhan430033,China;Scientific Research Department,Army Academy of Armored Force,Beijing100072,China)

机构地区：[1]海军工程大学兵器工程学院,湖北武汉430033 [2]陆军装甲兵学院科研学术处,北京100072

出　　处：《华中科技大学学报（自然科学版）》2019年第9期31-35,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51509252);国家重大安全基础研究项目(613166)

摘　　要：为了研究海洋环境电磁场对海上低频电磁场探测的影响,首先推导了三层介质中海浪速度函数,再利用电磁场边界条件求解麦克斯韦方程组,建立了三层介质中海浪运动产生感应电磁场的数学模型.在仿真分析基础上进行了浮动平台和沉底固定平台的海浪感应电磁场测量实验,结果表明:海浪感应电磁场频率集中在0.5 Hz以下,大小和频率都与海浪速度密切相关,海浪速度越快频率越低,3级海况下海浪感应电场可达数μV/m量级,感应磁场可达0.5 nT量级.In order to analysis the influence of environment electromagnetic fields to the ship electromagnetic detection,an air-sea-seabed three-layer mathematical model of induced electromagnetic fields associated with ocean wave was proposed by the solution of Maxwell’s equations using electromagnetic field boundary conditions.Based on the above theoretic solutions,the electric field and magnetic field induced by wave were simulated.Furthermore,wave-induced electromagnetic fields were measured by floating platform and fixed platform in the sea.Both results show that the frequency of wave-induced electromagnetic field is concentrated below 0.5 Hz,and both amplitude and frequency are related to the speed of the waves.The faster the wave,the lower the frequency.The electric fields produced by waves under three sea conditions are on the order of a fewμV/m,and the magnetic fields are on the order of 0.5 nT.

关 键 词：海浪 电磁场 探测 海洋 感应电磁场 数学模型 

分 类 号：TM15[电气工程—电工理论与新技术]