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Cited by 470

The DOI matches its Crossref record; 68 of the 68 references it cites were found in a registry or an index.

Bright and dark regions on Mars: Particle size and mineralogical characteristics based on Thermal Emission Spectrometer data

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Ruff, Steven W., Christensen, Philip R.·2002·Journal of Geophysical Research: Planets

Abstract

Emissivity spectra (1670–200 cm−1) from the Mars Global Surveyor Thermal Emission Spectrometer (MGS‐TES) show significant differences between bright and dark surfaces, allowing further investigation of their physical and mineralogical character. TES spectra from bright surfaces (albedo ≥0.2) typically show lower emissivity at high wavenumbers (>1300 cm−1) than that of dark surfaces (albedo <0.2). The opposite behavior is evident in the low wavenumbers (<560 cm−1), where bright surfaces have higher emissivity than dark ones. These trends are consistent with the spectral behavior of silicate materials of varying particle size. The short wavelength feature displayed by TES spectra of bright surfaces is a relatively strong absorption that likely is the result of particle size effects of surface silicate particles ≪100 μm in size. A dust cover index (DCI) is developed that exploits this short wavelength feature, serving to identify surfaces that range from dust‐covered to dust‐free. As a gauge of surface‐obscuring silicate dust that can impact spectral measurements, the DCI is more direct than thermal inertia or albedo measurements. Spectral ratio analysis using emissivity spectra from adjacent bright and dark surfaces is explored as a means of deriving the mineralogy of surface dust. The result shows that the dust is dominated by silicate minerals with indication of a significant plagioclase feldspar component.

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Crossref · 10.1029/2001je001580

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Metadata

Authors
Ruff, S. W., & Christensen, P. R.
Venue
Journal of Geophysical Research: Planets
Published
2002-12
Volume
107
Issue
E12
ISSN
0148-0227 (ISSN-L)
OpenAlex
W2136848228
Cited by
470
References
68
FWCI
7.40
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Bright and dark regions on Mars: Particle size and mineralogical characteristics based on Thermal Emission Spectrometer data. https://app.cochat.ai/papers/10.1029/2001je001580
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Ruff, S. W., & Christensen, P. R. (2002). Bright and dark regions on Mars: Particle size and mineralogical characteristics based on Thermal Emission Spectrometer data. Journal of Geophysical Research: Planets. https://doi.org/10.1029/2001je001580

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