中文摘要：

为分析深海中潜艇腐蚀相关磁场的分布特征，采用静态电偶极子对场源进行模拟，采用空气-海水2层模型对深海环境进行模拟，在利用镜像法求出全空间标量电位分布的基础上，利用标量电位和矢量磁位之间的约束关系，求解得到全空间中腐蚀或防腐电流所产生的磁场分布，并证明所得场分布是满足场方程及边界条件的。最后采用数值计算的方法对磁场空间分布特征进行了分析，结果表明：深海中的潜艇由于腐蚀及防腐措施在空气及海水中激发的静态磁场分布特征明显，是值得重视的探测或打击信号源。特别是场分量按距离的平方反比衰减，相对于铁磁材料所产生的磁场衰减要慢，有利于远程探测。研究结果为进一步的实际应用奠定了基础。

英文摘要：

In order to study the distribution characteristics of the corrosion-related magnetic field produced by a submarine in deep sea, a static horizontal electric dipole is adopted to simulate the field source and an air-seawater two-layer model is adopted to simulate the deep sea environment. Based on the solution of the electric scalar potential of the static electric dipole obtained by using the mirror image method, the distribution of the static magnetic field produced by the corrosion or anti-corrosion current was obtained and proved to satisfy the field equations and the boundary conditions under the constraint relation between the electric scalar potential and the magnetic vector potential . Then the space distribution features of the magnetic field were analyzed by using the numerical calculation method. The research results show that, because the corrosion-related magnetic field of a submarine in deep seas has measureable magnitude and obvious distribution characteristic in all space, it will become an important signal source for detection or striking. In particular the components of the corrosion-related magnetic field degenerate with the inverse square of the distance,and the attenuation is slower than the magnetic field of the ferromagnetic materials, so it will help for remote detection. The research results lay a foundation for further applications.