Development of Measuring Instruments for Fluid Flow Electromagnetic Method to Monitor Geothermal Fluid Flow

Abstract

Fluid Flow Electromagnetic Method is being developed for monitoring geothermal fluid flow behavior. The method can be applied to evaluate geothermal fluid distribution with time by measuring electromagnetic field distributions at each measurement node around the survey area. Measured values are transmitted periodically through wireless sensor networks from each measurement node to the survey base. Measurement nodes should be low-cost to reduce total survey cost, because a lot of measurement nodes are necessary to cover the survey area. Furthermore, it should also be low-power to reduce electric power consumption to be able to perform a long-term monitoring. Resulting from transmission experiments, dense arrangement of measurement nodes is required to reliably transmit measured values to the survey base through wireless sensor networks in vegetation environment.