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Thermal infrared emissivity measurements under a simulated lunar environment: Application to the Diviner Lunar Radiometer Experiment

Donaldson Hanna, Kerri L. and Wyatt, Michael and Thomas, Ian R. and Bowles, Neil and Greenhagen, Benjamin and Maturilli, Alessandro and Helbert, Jörn (2012) Thermal infrared emissivity measurements under a simulated lunar environment: Application to the Diviner Lunar Radiometer Experiment. Journal of Geophysical Research, 117, E00H05. Wiley. DOI: 10.1029/2011JE003862

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Abstract

Here we present new laboratory spectral measurements of the major silicate minerals identified on the Moon (plagioclase solid series endmembers: albite and anorthite; clinopyroxene and orthopyroxene; and the olivine endmember forsterite) under lunar environmental conditions. We make the first characterization of thermal infrared spectral changes between ambient and lunar environment conditions over the 7 – 25 μm wavelength range for a fine-grained mineral suite and evaluate their application to lunar remote sensing data sets. The lunar environment introduces observable effects in thermal infrared emissivity spectra of fine grain minerals, which include: (1) a shift in the Christensen Feature (CF) position to shorter wavelengths, (2) an increase in the overall spectral contrast, and (3) decreases in the spectral contrast of the Reststrahlen Bands (RB) and Transparency Features (TF). Thus, our new measurements demonstrate the high sensitivity of minerals to environmental conditions under which they are measured and provide important constraints for interpreting new thermal infrared datasets of the Moon, including the Diviner Lunar Radiometer Experiment onboard NASA’s Lunar Reconnaissance Orbiter. Full resolution laboratory mineral spectra deconvolved to Diviner’s three spectral channels demonstrate that the spectral shape, CF position and band ratios can be used to distinguish between individual mineral groups and lunar lithologies. The integration of the thermal infrared CF position with near infrared spectral parameters allow us to make more robust mineralogical identifications and provide a framework for future integrations of data sets across two different wavelength regimes.

Item URL in elib:https://elib.dlr.de/71491/
Document Type:Article
Title:Thermal infrared emissivity measurements under a simulated lunar environment: Application to the Diviner Lunar Radiometer Experiment
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Donaldson Hanna, Kerri L.Brown University, Providence, USAUNSPECIFIED
Wyatt, MichaelBrown University, Providence, USAUNSPECIFIED
Thomas, Ian R.AOPP, Oxford University, UKUNSPECIFIED
Bowles, NeilAOPP, Oxford University, UKUNSPECIFIED
Greenhagen, BenjaminJPL, Pasadena, USAUNSPECIFIED
Maturilli, AlessandroAlessandro.Maturilli (at) dlr.deUNSPECIFIED
Helbert, Jörnjoern.helbert (at) dlr.deUNSPECIFIED
Date:2012
Journal or Publication Title:Journal of Geophysical Research
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:117
DOI :10.1029/2011JE003862
Page Range:E00H05
Publisher:Wiley
Status:Published
Keywords:Mond, DIVINER
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben Exploration des Sonnensystems
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Deposited By: Helbert, Dr.rer.nat. Jörn
Deposited On:30 May 2012 09:19
Last Modified:08 Mar 2018 18:43

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