Geothermal Heat Source Assessment Using Electromagnetic Prospecting

Abstract

We have carried out combined surveys composed of the CSMT and the long offset prospecting at two geothermal areas, the and the Waita area, attempting to a heat source type of area. The depth of investigation of TDEM depends on of moment, the of between the transmitter and receivers, dynamic range of the receiver and also noise of the receiver If we choose reasonable condition these factor, we may heat source, such magma chamber or hot rock, which may situate a:. the depth of 5 to The CSMT method was used to investigate shallower part. of the resistivity structure that was sometimes incorrectly determined by the TUEM. on these results, we have delineated relation between the sites of source and the geothermal reservoir in these area. And we pointed out, that development of the reservoir depends on age of heat source.