Abstract
By measuring certain physical properties of fifteen soils typical of Wisconsin-aged, glacial till soils capped with less than 60 inches of loess in Indiana, the variations in spectral response in the laboratory were explained. Spectral reflectance measure with the Exotech 20-C can be significantly explained by percent moisture, organic carbon, and clay content of these soils. The soils studied were predominantly silty with a range of organic carbon from .60 to 1.33%. The moisture content of the soils was controlled by use of the pressure membrane at 15 bars, pressure plates at 1/3 bar, and oven dried at 105°C for 24 hours in a forced air dryer. The moisture of the samples was equilibrated, and then illuminated artificially by a General Electric DXW lamp and spectrally measured from .53 µm to 2.32 µm with Exotech 20-C.
LARS Tech Report Number
081176
Date of this Version
January 1975
Recommended Citation
Beck, Robert H., "Spectral Characteristics of Soils Related to the Interaction of Soil Moisture, Organic Carbon, and Clay Content" (1975). LARS Technical Reports. Paper 100.
https://docs.lib.purdue.edu/larstech/100