A NOVEL ATMOSPHERIC REMOVAL TECHNIQUE FOR TES SPECTRA APPLIED TO ROCKS IN THE NILI FOSSAE REGION, MARS
This simple and robust technique allows TES spectra to be compared directly to laboratory spectra and to Mini-TES spectra from the Mars Exploration Rovers. Although previous SAS techniques yield atmospherically corrected spectra that can serve this purpose, they are more challenging to implement, retain fewer data points, and are less accurate in some cases. The DRRS technique provides an option that is well suited to both quick-look assessments of TES spectra and in-depth analyses using follow-on spectral modeling techniques. We found that DRRS of olivine -rich bedrock in the Nili Fossae region display spectral features that match olivine with a composition ranging from ~Fo50 to Fo75 and that match olivine-rich Algonquin-class rocks in the Columbia Hills of Gusev crater, which show characteristics of ignimbrite deposits.
Bandfield, J. L., and M. D. Smith (2003), Multiple emission angle surface–atmosphere separations of Thermal Emission Spectrometer data, Icarus, 161, 47-65.
Ruff, S. W., and V. E. Hamilton (2021), A Novel Atmospheric Removal Technique for TES Spectra Applied to Olivine and Carbonate-rich Bedrock in the Nili Fossae Region, Journal of Geophysical Research: Planets, e2021JE006822, doi:https://doi.org/10.1029/2021JE006822.