Controlled Source Frequency-Domain Electromagnetics At Neal Hot Springs Geothermal Area (Shaltry, 2012)
Exploration Activity: Controlled Source Frequency-Domain Electromagnetics At Neal Hot Springs Geothermal Area (Shaltry, 2012)
|Exploration Activity Details|
|Location||Neal Hot Springs Geothermal Area|
|Exploration Technique||Controlled Source Frequency-Domain Electromagnetics|
|Activity Date||2011 - 2011|
Electromagnetic surveys were conducted to gain a better understanding of the geology and structure of Neal Hot Springs and the surrounding areas. These studies were conducted by students and faculty in geophysics field camps from the Colorado School of Mines, Boise State University, and Imperial College London.
Three main transects were completed during the 2011 field camp. Two instruments were used, the EM31 and the EM34. The EM31 was configured to measure at 9.8 kHz. The EM34 was operated by placing the transmitter coil 20 m from the receiver and taking measurements at 30 m intervals along the profile. This method provided data to around 10-15 m depth. Two other long distance transects were completed during the field camp. One crossed and successfully detected the main production fault at Neal Hot Springs. The source station was located about 15 km from the receiver station. Reliable date down to 500 m was collected. Several problems occurred during the field exercises, on the first day communications problems occurred between the source and receiver teams. the next day there were battery failures and a belt in the generator failed. Regardless of the problems good data was collected during the field efforts. Software provided by Zonge International was used for the interpretation process. Interpretations show that the production fault dips west and trends north-south and is located about 500 m east of the power plant.
- Daniel Shaltry (2012) BSU Geophysics Field Camp Report 2012
- Colorado School of Mines and Imperial College London (2011) Geophysical Characterization of a Geothermal System Neal Hot Springs, Oregon, USA