Detection of static magnetic and electric dipoles located near the sea bottom

The detectability of static electric and magnetic dipoles near the ocean bottom is examined. The search for these objects is assumed coherent and limited only by natural environmental noise. Short wavelength magnetic anomalies limit the range of the magnetic dipole source, while oceanic turbulence limits the range of the electric dipole. On a worldwide basis the maximum detectable range for a 10 watt torus is estimated to be 13-50 meters while the corresponding length for a 10 watt electric dipole is 90- 370 meters. Electrochemical effects at the receiving antenna will have to be minimized, however, to obtain the range advantage of the electric search.