Photometric anomalies of the lunar surface studied with SMART-1 AMIE data

Details Photometric anomalies of the lunar surface studied with SMART-1 AMIE data Photometric anomalies of the lunar surface studied with SMART-1 AMIE data

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009icar..202..393k&link_type=abstract

Icarus, Volume 202, Issue 2, p. 393-413.

Computer Science

18

Scientific paper

We present new results from the mapping of lunar photometric function parameters using images acquired by the spacecraft SMART-1 (European Space Agency). The source data for selected lunar areas imaged by the AMIE camera of SMART-1 and the data processing are described. We interpret the behavior of photometric function in terms of lunar regolith properties. Our study reveals photometric anomalies on both small (sub-kilometer) and large (tens of kilometers) scales. We found the regolith mesoscale roughness of lunar swirls to be similar in Mare Marginis, Mare Ingenii, and the surrounding terrains. Unique photometric properties related to peculiarities of the millimeter-scale regolith structure for the Reiner Gamma swirl are confirmed. We identified several impact craters of subkilometer sizes as the source of photometric anomalies created by an increase in mesoscale roughness within the proximal crater ejecta zones. The extended ray systems reveal differences in the photometric properties between proximal and distant ejecta blankets. Basaltic lava flows within Mare Imbrium and Oceanus Procellarum indicate higher regolith porosity for the redder soils due to differences in the chemical composition of lavas.

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