April PGS meeting announcement
The April meeting of the Potomac Geophysical Society will be held April 16th at the Fort Myer Officers' Club in Arlington, VA in the Campaign Room. This month's talk will be: Mapping Rocks and Minerals using Advanced Spaceborne Thermal Emission and Reflection Radiometer data, by John 'Lyle' Mars (USGS, Reston, VA).
Abstract:
The Advanced Spaceborne Thermal Emission and Reflectance Radiometer (ASTER) measures reflected radiation in 3 bands in the 0.52 to 0.86 micrometer wavelength region (VNIR); 6 bands in the 1.6 to 2.43 micrometer wavelength region (SWIR); and 5 bands of emitted radiation in the 8.125 to 11.65 micrometer wavelength region (TIR) with 15-m, 30-m, and 90-m resolution, respectively. ASTER also has a backward-looking VNIR telescope with 15-m resolution. The swath-width is 60 km, but off-nadir pointing capability extends the total cross-track viewing of ASTER to 232 km. ASTER VNIR bands are positioned to delineate Fe absorption features, ASTER SWIR bands can delineate Al-OH, Fe Mg-OH, H-O-H and CO3 absorption features, and TIR bands are particularly useful for mapping Si-O vibrational features. This talk will demonstrate techniques and results of minerals and lithologic mapping using ASTER data. Mineral and lithologic maps compiled from ASTER data include parts of the western U.S., Afghanistan, Iran, Kazakhstan, Morocco, and Pakistan. Mapping algorithms include band ratio, matched filtering, and logical operators. Minerals and mineral groups mapped using ASTER data include, muscovite, argillic and phyllic-altered rocks, carbonate rocks, hydrothermal quartz, and quartz-rich rocks.
Biographical Information:
Lyle Mars is currently a Research Geologist in Remote Sensing at the USGS. He got his PhD from the University of Kentucky in 1995. His research is focused on gaining a better understanding of the spectral characteristics of a wide range of earth materials and how these characteristics are remotely sensed. This work is enhancing our abilities to identify important mineral resources, elucidate global tectonic relationships and facilitate recognition of environmental degradation related to mining. He investigates the spectral properties of rocks, minerals and vegetation and applies spectroscopic observations to research in multispectral and hyperspectral remote sensing studies. Most of his remote sensing projects are focused on spectral data in the 0.35 to 14.0 micrometer region. This research is applied to new remote sensing techniques in the identification of minerals, rock types, stratigraphy, structures, and vegetation. His spectroscopic research is also used in the calibration of new remote sensing systems such as the Advanced Spaceborne Thermal Reflection and Emission Radiometer (ASTER), Hyperion, and Hymap. Prior to USGS he was a Visiting Assistant Professor at George Mason University.
Reception at 6:30. Dinner at 7:30. Talk at 8:30 PM. Allow 15 minutes for security entering Ft. Myer as all civilian vehicles are searched. To ensure access to and from Fort Myer use the Hatfield Gate, open 24 hours a day. If you wish to attend dinner ($25), please make reservations with Joydeep Bhattacharyya at 703-676-4373 or via E-mail at Joydeep.bhattacharyya@saic.com. If you wish, please feel free to attend the talk without dinner. Non-members and guests are welcome. Visit the PGS web site for new meeting announcements, etc. Please send changes of address or email to Joydeep.bhattacharyya@saic.com.
Abstract:
The Advanced Spaceborne Thermal Emission and Reflectance Radiometer (ASTER) measures reflected radiation in 3 bands in the 0.52 to 0.86 micrometer wavelength region (VNIR); 6 bands in the 1.6 to 2.43 micrometer wavelength region (SWIR); and 5 bands of emitted radiation in the 8.125 to 11.65 micrometer wavelength region (TIR) with 15-m, 30-m, and 90-m resolution, respectively. ASTER also has a backward-looking VNIR telescope with 15-m resolution. The swath-width is 60 km, but off-nadir pointing capability extends the total cross-track viewing of ASTER to 232 km. ASTER VNIR bands are positioned to delineate Fe absorption features, ASTER SWIR bands can delineate Al-OH, Fe Mg-OH, H-O-H and CO3 absorption features, and TIR bands are particularly useful for mapping Si-O vibrational features. This talk will demonstrate techniques and results of minerals and lithologic mapping using ASTER data. Mineral and lithologic maps compiled from ASTER data include parts of the western U.S., Afghanistan, Iran, Kazakhstan, Morocco, and Pakistan. Mapping algorithms include band ratio, matched filtering, and logical operators. Minerals and mineral groups mapped using ASTER data include, muscovite, argillic and phyllic-altered rocks, carbonate rocks, hydrothermal quartz, and quartz-rich rocks.
Biographical Information:
Lyle Mars is currently a Research Geologist in Remote Sensing at the USGS. He got his PhD from the University of Kentucky in 1995. His research is focused on gaining a better understanding of the spectral characteristics of a wide range of earth materials and how these characteristics are remotely sensed. This work is enhancing our abilities to identify important mineral resources, elucidate global tectonic relationships and facilitate recognition of environmental degradation related to mining. He investigates the spectral properties of rocks, minerals and vegetation and applies spectroscopic observations to research in multispectral and hyperspectral remote sensing studies. Most of his remote sensing projects are focused on spectral data in the 0.35 to 14.0 micrometer region. This research is applied to new remote sensing techniques in the identification of minerals, rock types, stratigraphy, structures, and vegetation. His spectroscopic research is also used in the calibration of new remote sensing systems such as the Advanced Spaceborne Thermal Reflection and Emission Radiometer (ASTER), Hyperion, and Hymap. Prior to USGS he was a Visiting Assistant Professor at George Mason University.
Reception at 6:30. Dinner at 7:30. Talk at 8:30 PM. Allow 15 minutes for security entering Ft. Myer as all civilian vehicles are searched. To ensure access to and from Fort Myer use the Hatfield Gate, open 24 hours a day. If you wish to attend dinner ($25), please make reservations with Joydeep Bhattacharyya at 703-676-4373 or via E-mail at Joydeep.bhattacharyya@saic.com. If you wish, please feel free to attend the talk without dinner. Non-members and guests are welcome. Visit the PGS web site for new meeting announcements, etc. Please send changes of address or email to Joydeep.bhattacharyya@saic.com.
Labels: minerals, pgs, satellite imagery
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