The effect of water media on the magnetic field of local magnetic objects
水介质对水下目标体磁场的影响

The magnetic field intensity caused by some similar magnetic objects in distinct media can produce certain modifications. This is measured and tested by a series of results about magnetic survey and verification obtained from Yangtze River channels. The modifications mechanism of magnetic field intensity from magnetic bodies in various media has not been discussed in this paper, but the phenomenon mentioned above can probably influence the effect on magnetic survey.