Moving Source Diploe Electromagnetic Exploration Device for Deeper and Poorer Conductors and a Method of Detecting such Conductors

The present invention relates to a moving diploe source electromagnetic induction device and method for carrying out geophysical surveys.  The device is useful to locate the deeper subsurface bodies under poor electrical conducting surfaces and for mapping subsurfacial conductivity changes due to salinity or pollution.  The device includes a transmitter coil forming a series resonance circuit with a tuning capacitor producing a primary electromagnetic field and a receiver set. The receiver set picks up resultant time-varying feeble secondary electromagnetic field amplitude is improved by increasing power of the transmitter coil.  The transmitter and receiver set up produce an analog signal which is fed to an A/D converter to obtain a digital signal to display the obtained data on an LCD display and storing the same data in a digital computer. 

This device finds application in carrying out geophysical surveys.

Locate the deeper subsurface bodies under poor electrical conducting surfaces and for mapping subsurfacial conductivity changes due to salinity or pollution