CSAMT and NSAMT Surveys

Measurements of the physical properties (electrical conductivity, density, magnetic properties, etc.) of the earth in the vicinity of the geothermal system can provide insights into the size and location of the geothermal system.  In July, 2005, Zonge Engineering conducted an extensive  survey of the valley using techniques with exotic sounding names like natural and controlled source audio magnetotellurics.  During this survey, both naturally occurring and artificially generated electric currents were measured to help us further define and outline the deep (700m +) underground geothermal system.  As these surveys do not measure the system as directly as heat flow, they can provide more ambiguous results that require careful interpretation.  However, they can map much larger areas and used in conjunction with the data from our test holes can provide very useful information.