有限深海域的海浪感应磁场  

Inductive magnetic field with deep ocean waves

作　　者：张杨 康崇[1] 吕金库[1] 

机构地区：[1]哈尔滨工程大学理学院,哈尔滨150001

出　　处：《中国惯性技术学报》2012年第5期593-595,共3页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金项目(61174192);博士点基金资助项目(20112304110003)

摘　　要：搭载磁力仪阵列的水下载体在海洋磁力测量中基本不受人类活动的电磁噪声干扰,但是受海洋环境的电磁噪声影响较大。当海浪运动所产生感应电磁场噪声与要检测的目标磁场量级、频带接近时,这些感应磁场噪声就成了不可忽略的干扰源。在Weaver模型基础上,建立了有限深水域海浪感应电磁场的数学模型,对有限深水域,特别是海洋大陆架范围内,对海浪运动产生的感应磁场进行求解,初步得到了感应地磁场与波高、海洋深度等参数的变化规律。这些研究为磁场实测提供了参考,对海洋磁测中波动数据的解释、反演、减小磁测噪声、提高测量精度有积极的意义。The underwater vehicles with magnetometer array are not influenced by the electromagnetic noise of human activities,but can be significantly influenced by the electromagnetic noise of ocean environment.When the amplitude and frequency band of the inductive electromagnetic field,which is caused by sea waves movement,are close to those of the target magnetic field,these inductive magnetic field noise can not be ignored.Based on Weaver model,this paper established the mathematical model of inductive electromagnetic field of deep waters,especially for the ocean within the scope of the continental shelf,and used it to calculate the inductive magnetic field due to the waves movement and obtain the change rule between the inductive magnetic field and sea parameters（such as wave height,ocean depth,etc.）.These studies can provide references for the measurement of magnetic field,the interpretation of data and the reducing of noise.It is very important for the improvement of measurement accuracy in marine magnetic tests.

关 键 词：Weaver模型 感应磁场 水下载体 海洋磁测 

分 类 号：U666.1[交通运输工程—船舶及航道工程]