Spadaccia, Stefano; Patty, C. H. Lucas; Thomas, Nicolas; Pommerol, Antoine (2023). Experimental study of frost detectability on planetary surfaces using multicolor photometry and polarimetry. Icarus, 396, p. 115503. Elsevier 10.1016/j.icarus.2023.115503
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Experimental_study_of_frost_detectability_on_planetary_surfaces_using_multicolor_photometry_and_polarimetry_-_1-s2.0-S0019103523000805-main.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (3MB) | Preview |
When the temperature and pressure conditions allow it, water ice can deposit as frost on the regolith of
planetary surfaces. Frost is an important indicator of the surface physical conditions, and may trigger geological
processes by its deposition and sublimation. This works aims to explore, experimentally, the possibility of
detecting early stages of frost formation and to characterize its spectrophotometric and spectropolarimetric
signatures in visible reflected light. We deposit ice on top of different regolith simulants, measuring the
dust temperature, the thickness, and the morphology of the frost through a microscope, while measuring
the reflected light at phase angles of 50° and 61°, and the linear polarization at phase angles of 5° and 16°,
at three different wavelengths (450, 550, and 750 nm). We show that both the spectral slope (in particular
between 450–550 nm), and the difference of polarization between 450 and 750 nm are efficient methods to
detect frost layers with thicknesses as low as 10 to 20 μm. Furthermore, we find that the linear polarization at
16° relates to the temperature of the regolith i.e. the type of the deposited ice crystalline structure.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences 08 Faculty of Science > Physics Institute 10 Strategic Research Centers > Center for Space and Habitability (CSH) 08 Faculty of Science > Physics Institute > NCCR PlanetS |
UniBE Contributor: |
Spadaccia, Stefano, Patty, Christian Herman Lucas, Thomas, Nicolas, Pommerol, Antoine |
Subjects: |
500 Science > 530 Physics 500 Science > 520 Astronomy 600 Technology > 620 Engineering |
ISSN: |
0019-1035 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Dora Ursula Zimmerer |
Date Deposited: |
22 Aug 2023 15:18 |
Last Modified: |
24 Sep 2023 02:28 |
Publisher DOI: |
10.1016/j.icarus.2023.115503 |
BORIS DOI: |
10.48350/185647 |
URI: |
https://boris.unibe.ch/id/eprint/185647 |
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