Reflectance study of ice and Mars soil simulant associations – I. H2O ice

Yoldi, Zuriñe; Pommerol, Antoine; Poch, Olivier; Thomas, Nicolas (2021). Reflectance study of ice and Mars soil simulant associations – I. H2O ice. Icarus, 358, p. 114169. Elsevier 10.1016/j.icarus.2020.114169

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The reflectance of water ice and dust mixtures depends, amongst other parameters, on how the components are mixed (e.g. intimate mixture, areal mixture or coating). Therefore, when inverting the reflectance spectra measured from planetary surfaces to derive the amount of water ice present at the surface, it is critical to distinguish between different mixing modes of ice and dust. However, the distinction between mixing modes from reflectance spectra remains ambiguous. Here we show how to identify some water ice/soil mixing modes from the study of defined spectral criteria and colour analysis of laboratory mixtures. We have recreated ice and dust mixtures and found that the appearance of frost on a surface increases its reflectance and flattens its spectral slopes, whereas the increasing presence of water ice in intimate mixtures mainly impacts the absorption bands. In particular, we provide laboratory data and a spectral analysis to help interpret ice and soil reflectance spectra from the Martian surface.

Item Type:

Journal Article (Review Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
08 Faculty of Science > Physics Institute
08 Faculty of Science > Physics Institute > NCCR PlanetS

UniBE Contributor:

Pommerol, Antoine and Thomas, Nicolas

Subjects:

500 Science > 520 Astronomy
600 Technology > 620 Engineering

ISSN:

0019-1035

Publisher:

Elsevier

Language:

English

Submitter:

Dora Ursula Zimmerer

Date Deposited:

25 Mar 2021 11:46

Last Modified:

28 Mar 2021 03:58

Publisher DOI:

10.1016/j.icarus.2020.114169

BORIS DOI:

10.7892/boris.153442

URI:

https://boris.unibe.ch/id/eprint/153442

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