Abstract
The thermal emission of two palagonitic soils, common visible and near infrared spectral analogs for bright soils on Mars, was measured over the wavelength range of 5 to 25μm (2000 to 400 cm-1) for several particle size separates. All spectra exhibit emissivity features due to vibrations associated with H2O and SiO. The maximum variability of emissivity is ~20% in the short wavelength region (5 to 6.5 μm, 2000 to 1500 cm-1), and is more subdued, <4%, at longer wavelengths. The strengths of features present in infrared spectra of Mars cannot be solely provided by emissivity variations of palagonite; some other material or mechanism must provide additional absorption(s). -Authors
Original language | English (US) |
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Pages (from-to) | 5309-5317 |
Number of pages | 9 |
Journal | Journal of geophysical research |
Volume | 100 |
Issue number | E3 |
DOIs | |
State | Published - Jan 1 1995 |
Externally published | Yes |
ASJC Scopus subject areas
- Geophysics
- Forestry
- Oceanography
- Aquatic Science
- Ecology
- Water Science and Technology
- Soil Science
- Geochemistry and Petrology
- Earth-Surface Processes
- Atmospheric Science
- Earth and Planetary Sciences (miscellaneous)
- Space and Planetary Science
- Palaeontology