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 journalArticlepeer-review

19 Scopus citations


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
Issue numberE3
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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