DUAL LOOP CONFIGURATION OF TRANSIENT ELECTROMAGNETIC METHOD

The transient electromagnetic method offers considerable advantages over conventional electromagnetic systems; these advantages make the method attractive under typical Australian conditions of conductive overburden. A common transient electromagnetic ground system used in Australia is a combined loop version in which the same loop is used for transmitting and receiving. This system employs a horizontal loop which is strongly coupled to horizontal conductors. By means of scale model studies and a field example it is shown that an alternative loop configuration is a system in which two adjacent loops are connected in parallel, the ″dual loop″ configuration.