(Redirected from Forward-Looking Infrared)
Exploration Technique: FLIR
|Exploration Technique Information|
|Exploration Group:||Remote Sensing Techniques|
|Exploration Sub Group:||Passive Sensors|
|Parent Exploration Technique:||Passive Sensors|
|Information Provided by Technique|
|Thermal:||Map surface temperatures|
|Low-End Estimate (USD):|| 241.3524,135 centUSD |
2.4135e-7 TUSD / mile
|Median Estimate (USD):|| 643.6064,360 centUSD |
6.436e-7 TUSD / mile
|High-End Estimate (USD):|| 1,609.00160,900 centUSD |
1.609e-6 TUSD / mile
|Low-End Estimate:|| 0.25 days6.844627e-4 years |
0.00821 months / sq. mile
|Median Estimate:|| 1.03 days0.00282 years |
0.0338 months / sq. mile
|High-End Estimate:|| 3.89 days0.0107 years |
0.128 months / sq. mile
|Cost/Time Dependency:||Location, Size, Resolution, Terrain, Weather|
Data is typically collected only from one or two bands and is used to look for relatively warm or hot materials (e.g., hot springs, pools, hot rock/lava and snow melt).
In general night time scans are better when searching for thermal anomalies because solar irradiation overwhelms during daytime scans. Daytime scans are useful however, for applying corrections that are needed due to topographic, albedo, and thermal inertia effects.
Topography can have a significant effect on thermal images; slopes facing the sun receive more thermal energy than slopes facing away from the sun. This effect is stronger during the daytime but carries on into the nighttime, affecting thermal images. Albedo effects influence thermal data as well. Light colored surfaces remain cooler compared to dark colored surfaces. This effect also carries on into the nighttime affecting thermal images. Thermal inertia also affects images. Thermal inertia is the rate at which certain materials heat or cool and is significantly affected by porosity. All of these effects can be estimated and corrected for, but make data processing more difficult.
- Chris Douglass. IR Spectral Bands and Performance [Internet]. 2013. [cited 2013/10/01]. Available from: http://gs.flir.com/uploads/file/tech-notes/tech%20note13%20-%20ir%20spectral%20bands.pdf
- Alaska Energy Wiki. Pilgrim Hot Springs Project - PHASE 1 [Internet]. 2012. [cited 2013/09/30]. Available from: http://energy-alaska.wikidot.com/pilgrim-hot-springs-project-phase-1
- Mariana Eneva (California Energy Commission). 2010. Geothermal Exploration in Eastern California Using Aster Thermal Infrared Data. N/A: California Energy Commission. Report No.: CEC‐500‐2012‐005.
|Page||Area||Activity Start Date||Activity End Date||Reference Material|
|FLIR At Chena Geothermal Area (Holdmann, Et Al., 2006)||Chena Geothermal Area||2005||2007||
|FLIR At Pilgrim Hot Springs Area (DOE GTP)||Pilgrim Hot Springs Area||
|FLIR At Pilgrim Hot Springs Area (Prakash, Et Al., 2010)||Pilgrim Hot Springs Area|