Vegetation obscuration effects on mid-infrared laser reflectance of soil

Brian D. Guenther, Ram M. Narayanan

Research output: Contribution to conferencePaper

Abstract

Mid-infrared laser reflectances of soils containing specific minerals show diagnostic features in the 9-11 wavelength range, resulting in their suitability for remote sensing of terrestrial lithology. However, the presence of actively growing vegetation can obscure these diagnostic features, in some cases almost completely, so as to make mineral identification virtually impossible. An experimental study was carried out to determine the effects of growing grass on the mid-infrared laser reflectance of bare soil in order to determine the conditions under which the underlying soil reflectance loses its diagnostic features. Reflectance ratios (indicative of diagnostic features) were investigated as a function of grass-blade height for different grass densities. It was found that, under specific soil conditions, there appeared a grass-blade height value at which the diagnostic ratios level off to a value of 1.0, thereby masking the underlying soil features. These results are expected to be useful for identifying optimal conditions under which soil mineralogy can be identified under overlying vegetation.

Original languageEnglish (US)
Pages445-447
Number of pages3
StatePublished - Jan 1 1996
EventProceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4) - Lincoln, NE, USA
Duration: May 28 1996May 31 1996

Other

OtherProceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4)
CityLincoln, NE, USA
Period5/28/965/31/96

Fingerprint

Infrared lasers
reflectance
laser
grass
Soils
vegetation
soil
mineral
Minerals
bare soil
lithology
experimental study
Lithology
Mineralogy
wavelength
remote sensing
effect
Remote sensing
Wavelength

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

Cite this

Guenther, B. D., & Narayanan, R. M. (1996). Vegetation obscuration effects on mid-infrared laser reflectance of soil. 445-447. Paper presented at Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4), Lincoln, NE, USA, .
Guenther, Brian D. ; Narayanan, Ram M. / Vegetation obscuration effects on mid-infrared laser reflectance of soil. Paper presented at Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4), Lincoln, NE, USA, .3 p.
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Guenther, BD & Narayanan, RM 1996, 'Vegetation obscuration effects on mid-infrared laser reflectance of soil', Paper presented at Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4), Lincoln, NE, USA, 5/28/96 - 5/31/96 pp. 445-447.

Vegetation obscuration effects on mid-infrared laser reflectance of soil. / Guenther, Brian D.; Narayanan, Ram M.

1996. 445-447 Paper presented at Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4), Lincoln, NE, USA, .

Research output: Contribution to conferencePaper

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AB - Mid-infrared laser reflectances of soils containing specific minerals show diagnostic features in the 9-11 wavelength range, resulting in their suitability for remote sensing of terrestrial lithology. However, the presence of actively growing vegetation can obscure these diagnostic features, in some cases almost completely, so as to make mineral identification virtually impossible. An experimental study was carried out to determine the effects of growing grass on the mid-infrared laser reflectance of bare soil in order to determine the conditions under which the underlying soil reflectance loses its diagnostic features. Reflectance ratios (indicative of diagnostic features) were investigated as a function of grass-blade height for different grass densities. It was found that, under specific soil conditions, there appeared a grass-blade height value at which the diagnostic ratios level off to a value of 1.0, thereby masking the underlying soil features. These results are expected to be useful for identifying optimal conditions under which soil mineralogy can be identified under overlying vegetation.

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Guenther BD, Narayanan RM. Vegetation obscuration effects on mid-infrared laser reflectance of soil. 1996. Paper presented at Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4), Lincoln, NE, USA, .