Abstract
The Rümker region is located in the northern Oceanus Procellarum, which has been selected as the landing and sampling region for China’s Chang’e-5 (CE-5) mission. The thermophysical features of the mare units are studied in detail using the brightness temperature (TB) maps (TB, normalized TB, TB difference) derived from the CE-2 microwave radiometer data. The previously interpreted geological boundaries of the Rümker region are revisited in this study according to their TB behaviors: IR1, IR2, and IR3 Rümker plateau units are combined into one single unit (IR); and a hidden unit is found on the Mons Rümker; Mare basaltic units Im1 and Em1 are combined into Em1; and Em2 is more likely the extending of Im2. Each of the previous proposed landing sites and their scientific value are summarized and reevaluated. Based on this, four landing sites are recommended in order to maximize the scientific outcome of the CE-5 mission. We suggest that the Eratosthenian-aged Em4 and Em1 units as the top priority landing site for the CE-5 mission; the age-dating results will provide important clues concerning the thermal evolution of the Moon.
Highlights
The Chang’e-5 (CE-5) mission, scheduled to launch at the end of 2020, is China’s first lunar sample return mission [1,2,3]
The CE-2 CELMS data are employed to evaluate the thermophysical features of the basaltic units in the Rümker region, in order to better understand the basaltic volcanism of the region and provide additional supports for the CE-5 mission
We generated and combined (a) the TB, normalized TB (nTB), and dTB maps derived from the CE-2
Summary
The Chang’e-5 (CE-5) mission, scheduled to launch at the end of 2020, is China’s first lunar sample return mission [1,2,3]. The CELMS data is sensitive to the chemical components and temperature of the substrate regolith [30,32,33,34,35], providing an opportunity to unravel its structures In this case, the CE-2 CELMS data are employed to evaluate the thermophysical features of the basaltic units in the Rümker region, in order to better understand the Remote Sens. In this case, the CE-2 CELMS data are employed to evaluate the thermophysical features of the basaltic units in the Rümker region, in order to better understand the basaltic volcanism of the region and provide additional supports for the CE-5 mission
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