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Processes governing the VIS/NIR spectral reflectance behavior of lunar swirls

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dc.contributor.author Hess M.
dc.contributor.author Wöhler C.
dc.contributor.author Bhatt M.
dc.contributor.author Berezhnoy A.A.
dc.contributor.author Grumpe A.
dc.contributor.author Wohlfarth K.
dc.contributor.author Bhardwaj A.
dc.contributor.author Shevchenko V.V.
dc.date.accessioned 2021-02-24T20:31:41Z
dc.date.available 2021-02-24T20:31:41Z
dc.date.issued 2020
dc.identifier.issn 0004-6361
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/160718
dc.description.abstract © ESO 2020. We investigated six bright swirls associated with magnetic anomalies of variable strength using Chandrayaan-1 Moon Mineralogy Mapper (M3) hyperspectral image data. We examined the 3 μm absorption band generally ascribed to solar wind-induced OH/H2O and spectral trends in the near-infrared wavelength range at on-swirl and off-swirl locations. We found that the 3 μm absorption band is weaker at on-swirl than at off-swirl locations and shows only weak variations with time-of-day. This result is consistent with magnetic anomaly shielding that reduces solar wind interaction with the surface. For a small swirl structure in Mare Moscoviense, we found the 3 μm absorption band to be similar to that of its surroundings due to the absence of strong magnetic shielding. Our spectral analysis results at on-swirl and off-swirl locations suggest that the spectral trends at on-swirl and off-swirl locations cannot always be explained by reduced space-weathering alone. We propose that a combination of soil compaction possibly resulting from the interaction between the surface and cometary gas and subsequent magnetic shielding is able to explain all observed on-swirl vs. off-swirl spectral trends including the absorption band depth near 3 μm. Our results suggest that an external mechanism of interaction between a comet and the uppermost regolith layer might play a significant role in lunar swirl formation.
dc.relation.ispartofseries Astronomy and Astrophysics
dc.subject Methods: data analysis
dc.subject Moon
dc.subject Planets and satellites: surfaces
dc.subject Radiative transfer
dc.subject Solid state: volatile
dc.subject Techniques: imaging spectroscopy
dc.title Processes governing the VIS/NIR spectral reflectance behavior of lunar swirls
dc.type Article
dc.relation.ispartofseries-volume 639
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00046361-2020-639-SID85087924920


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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