U.S. Department of EnergyOffice of Scientific and Technical Information
Shallow (2-meter) Temperature Surveys in Colorado
Abstract
Shallow temperature surveys are useful in early-stage geothermal exploration to delineate surface outflow zones, with the intent to identify the source of upwelling, usually a fault. Detailed descriptions of the 2-meter survey method and equipment design can be found in Coolbaugh et al. (2007) and Sladek et al. (2007), and are summarized here. The survey method was devised to measure temperature as far below the zone of solar influence as possible, have minimal equilibration time, and yet be portable enough to fit on the back of an all-terrain vehicle (ATV); Figure 2). This method utilizes a direct push technology (DPT) technique where 2.3 m long, 0.54" outer diameter hollow steel rods are pounded into the ground using a demolition hammer. Resistance temperature devices (RTD) are then inserted into the rods at 2-meter depths, and allowed to equilibrate for one hour. The temperatures are then measured and recorded, the rods pulled out of the ground, and re-used at future sites. Usually multiple rods are planted over the course of an hour, and then the sampler returns back to the first station, measures the temperatures, pulls the rods, and so on, to eliminate waiting time. At Wagon Wheel Gap, 32 rods weremore »
- Authors:
- Publication Date:
- Other Number(s):
- 297
- DOE Contract Number:
- EE0002828
- Research Org.:
- USDOE Geothermal Data Repository (United States); Flint Geothermal, LLC
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Geothermal Technologies Program (EE-4G)
- Collaborations:
- Flint Geothermal, LLC
- Subject:
- 15 Geothermal Energy
- Keywords:
- geothermal; shallow temperature surveys; Colorado; Shallow temperature survey; ArcGIS; GIS; shapefile; shape file; geospatial; data; geospatial data; exploration; remote sensing; anomaly detection; fault detection; temperature; upflow fault; fault
- Geolocation:
- 40.90874314825,-103.9732015625|36.862265662716,-103.9732015625|36.862265662716,-109.015825|40.90874314825,-109.015825|40.90874314825,-103.9732015625
- OSTI Identifier:
- 1148768
- DOI:
- https://doi.org/10.15121/1148768
- Project Location:
-
Citation Formats
E., Richard. Shallow (2-meter) Temperature Surveys in Colorado. United States: N. p., 2012.
Web. doi:10.15121/1148768.
E., Richard. Shallow (2-meter) Temperature Surveys in Colorado. United States. doi:https://doi.org/10.15121/1148768
E., Richard. 2012.
"Shallow (2-meter) Temperature Surveys in Colorado". United States. doi:https://doi.org/10.15121/1148768. https://www.osti.gov/servlets/purl/1148768. Pub date:Wed Feb 01 00:00:00 EST 2012
@article{osti_1148768,
title = {Shallow (2-meter) Temperature Surveys in Colorado},
author = {E., Richard},
abstractNote = {Shallow temperature surveys are useful in early-stage geothermal exploration to delineate surface outflow zones, with the intent to identify the source of upwelling, usually a fault. Detailed descriptions of the 2-meter survey method and equipment design can be found in Coolbaugh et al. (2007) and Sladek et al. (2007), and are summarized here. The survey method was devised to measure temperature as far below the zone of solar influence as possible, have minimal equilibration time, and yet be portable enough to fit on the back of an all-terrain vehicle (ATV); Figure 2). This method utilizes a direct push technology (DPT) technique where 2.3 m long, 0.54" outer diameter hollow steel rods are pounded into the ground using a demolition hammer. Resistance temperature devices (RTD) are then inserted into the rods at 2-meter depths, and allowed to equilibrate for one hour. The temperatures are then measured and recorded, the rods pulled out of the ground, and re-used at future sites. Usually multiple rods are planted over the course of an hour, and then the sampler returns back to the first station, measures the temperatures, pulls the rods, and so on, to eliminate waiting time. At Wagon Wheel Gap, 32 rods were planted around the hot springs between June 20 and July 1, 2012. The purpose was to determine the direction of a possible upflow fault or other structure. Temperatures at 1.5m and 2m depths were measured and recorded in the attribute table of this point shapefile. Several anomalous temperatures suggest that outflow is coming from a ~N60W striking fault or shear zone that contains the quartz-fluorite-barite veins of the adjacent patented mining claims. It should be noted that temperatures at 2m depth vary according to the amount of solar heating from above, as well as possible geothermal heating from below.},
doi = {10.15121/1148768},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2012},
month = {Wed Feb 01 00:00:00 EST 2012}
}