| Title | The Self-Potential Method: Cost-Effective Exploration for Moderate-Temperature Geothermal Resources |
|---|---|
| Authors | Howard P. Ross, Robert E. Blackett and James C. Witcher |
| Year | 1995 |
| Conference | World Geothermal Congress |
| Keywords | self-potential, geothermal, exploration, geophysics |
| Abstract | The self-potential geophysical method is an established geophysical technique which measures naturally occurring voltage differences at the surface of the earth. UURI, in conjunction with state resource teams and private companies, has completed detailed SP surveys over ten geothermal systems throughout the western United States since 1989. Most of these resources are characterized by a small, trolled upflow zone and an extensive outflow area at shallow depths. Survey procedures have been developed to obtain high-quality, cost SP data for survey areas of 2 to 8 square Although positive, negative, and multi-polar anomalies were observed, the betterdefined anomalies are often minima, several of which exceed 100 |