Hydrothermal mineral alterations in the Brady and Desert Peak geothermal fields

Description

Results of the analysis of HyMap's spectra against know hydrothermally altered minerals in the Brady-Desert Peak Geothermal Areas. The analysis was performed using ENVI's Target Detection process against USGS library spectra for Chalcedony, Kaolinite, Gypsum, Hematite and Epsomite. Each compressed file includes three raster images created after fusing the target detection results for all minerals: _fusion_all - Contains the 8 layers resulting from target detection and fusion of the 5 minerals _fusion_all_normal - Contains each layer as above, after Winsorization (99% percentile on the positive side only due to skewness of results), and normalization of each layer to achieve a range between [0-1] _fusion_final - Contains a fused raster by sub-setting the normalized layers, with the results of MTMF, MTTCIMF, OSP and SAM. Both CEM and MF were discarded as being less accurate than MTMF, and TCIMF is less accurate than MTTCIMF, ACE results were discarded because they were notably different from the rest of the analyses. The base_names are: brady - Brady geothermal area only desert - Desert Peak geothermal area only hymap - Full image analysis comprising both the Brady and Desert Peak geothermal areas

Resources

Name Format Description Link
57 Includes three raster images created after fusing the target detection results for all minerals: brady_fusion_all - Contains the 8 layers resulting from the fusion of the 5 minerals target detection results. brady_fusion_all_normal - Contains each layer as above, after Winsorization (99% percentile on the positive side only due to skewness of results), and normalization of each layer to achieve a range between [0-1]. brady_fusion_final - Contains a fused raster by sub-setting the normalized layers, with the results of MTMF, MTTCIMF, OSP and SAM. Winsorization is applied at percentile 99 on the positive side only. https://gdr.openei.org/files/1334/brady_fusion.zip
57 Includes three raster images created after fusing the target detection results for all minerals: desert_fusion_all - Contains the 8 layers resulting from the fusion of the 5 minerals target detection results desert_fusion_all_normal - Contains each layer as above, after Winsorization (99% percentile on the positive side only due to skewness of results), and normalization of each layer to achieve a range between [0-1] desert_fusion_final - Contains a fused raster by sub-setting the normalized layers, with the results of MTMF, MTTCIMF, OSP and SAM. Winsorization is applied at percentile 99 on the positive side only. https://gdr.openei.org/files/1334/desert_fusion.zip
57 Includes three raster images created after fusing the target detection results for all minerals: hymap_fusion_all - Contains the 8 layers resulting from the fusion of the 5 minerals target detection results. hymap_fusion_all_normal - Contains each layer as above, after Winsorization (99% percentile on the positive side only due to skewness of results), and normalization of each layer to achieve a range between [0-1]. hymap_fusion_final - Contains a fused raster by sub-setting the normalized layers, with the results of MTMF, MTTCIMF, OSP and SAM. Winsorization is applied at percentile 99 on the positive side only. https://gdr.openei.org/files/1334/hymap_fusion.zip
57 Images of maps for the fusion of fusions in the raster files in PNG format: Brady Fusion of Fusions 20211001 - The results for the Brady geothermal area only Desert Peak Fusion of Fusions 20211001 - The results for the Desert Peak geothermal area only HyMap Fusion of Fusions 20211001 - The results for both Brady and Desert Peak geothermal areas Kratt 06 Region - Fusion Map 20210928 - Fusion map equivalent to image 6 in [1] OSP Minerals - Kratt 10 - OSP target detection map equivalent to image 10 in [1] 1. Kratt, Chris, Calvin, Wendy, Coolbaugh, Mark (2006) Geothermal exploration with Hymap hyperspectral data at Brady–Desert Peak, Nevada. Remote Sensing of Environment, 104 (3). 313-324 doi:10.1016/j.rse.2006.05.005 https://gdr.openei.org/files/1334/Fusion%20of%20fusions%20-%20PNG%20maps.zip

Tags

  • data
  • processed-data
  • hydrothermal-mineral-alterations
  • geospatial-data
  • spectral-analysis
  • data-fusion
  • mineral-alterations
  • mineral-markers
  • target-detection
  • remote-sensing
  • hymap
  • desert-peak
  • brady
  • nevada
  • geothermal
  • geothermal-area
  • energy

Topics

Categories