Thermal emission measurements 2000-400 cm-1 (5-25 μm) of Hawaiian palagonitic soils and their implications for Mars

T. L. Roush, J. F. Bell

Research output: Contribution to journalArticle

18 Scopus citations

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 languageEnglish (US)
Pages (from-to)5309-5317
Number of pages9
JournalJournal of geophysical research
Volume100
Issue numberE3
DOIs
StatePublished - Jan 1 1995
Externally publishedYes

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

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