The optical parameters of mare and highland lunar soils.
Abstract
The diffuse-reflectance spectra (albedo) and variation of intensity with phase angle of mare and highland lunar soils which have been brought back by the Luna 16 and Luna 20 stations and Apollo 15 mission were investigated in the UV, visible and IR regions. The albedo of all specimens was found to increase continuously from blue to red and to have the maximum in the IR region (the reflectance coefficient was up to 20-30% for mare soils, and up to 40% for highland soils). The albedo of highland fines was higher than that of mare fines, and that difference was smaller in the UV than in the IR region. The albedo values of all specimens were rather low in the UV region (6-12%). The backscattering effect was found in all specimens in the spectral region investigated. The scattering coefficients of soils depend on landing site and on spectral region.
- Publication:
-
Space Research XIV
- Pub Date:
- 1974
- Bibcode:
- 1974spre.conf..621A
- Keywords:
-
- Luminous Intensity;
- Lunar Maria;
- Lunar Soil;
- Optical Reflection;
- Spectral Reflectance;
- Absorption Spectra;
- Albedo;
- Apollo 15 Flight;
- Electromagnetic Scattering;
- Infrared Radiation;
- Lunar Landing Sites;
- Phase Shift;
- Scattering Coefficients;
- Soil Science;
- Spectrophotometers;
- Surface Properties;
- Ultraviolet Spectra;
- Lunar and Planetary Exploration