Detection of the Magnetic Field Induced by the Wake of a Moving Submerged Body Using Simple Models

Wakes induced by the motion of submerged bodies may extend for several kilometers and the magnetic field induced by the motion of conductive sea water in the wake of a moving body may be detected in certain condition. Numerical simulations are used to compute the characteristic of wake magnetic field and compare it with wind wave’s magnetic fields, which can be detected using the modern magnetometers. Using the spectral analysis of the samples, the results show that the spectrum has a sharp peak, which can be detected in principle depending on sensitivity of the detector, body disturbance and environmental conditions.