Lunar regolith thickness deduced from concentric craters in the CE-5 landing area

Yue, Zongyu; Di, Kaichang; Liu, Zaihua; Michael, G.; Jia, Minghao; Xin, Xiaozhou; Liu, B.; Peng, Man; Liu, J.

doi:10.1016/j.icarus.2019.03.032

Cited by 49 publications

(26 citation statements)

References 45 publications

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“…Xie et al [26] quantitatively estimated the abundance variations of distantly sourced particles with depth using an updated ballistic sedimentation model, concluding that most of the extraneous materials are derived from Pythagoras (~5%) and Aristarchus craters (~7%). Qian et al [27] and Yue et al [28] studied the regolith thickness of the region, and found that the Imbrian-aged mare basalts have thicker regolith than the Eratosthenian-aged and that over 99% of the Rümker region has a regolith thickness larger than 2 m (the length of the core drill). Chisenga et al [29] applied a 3D density inversion to resolve both the shallow and deep density structures using Gravity Recovery and Interior Laboratory (GRAIL) data; they proposed that Mons Rümker is fed by a shallow magma chamber and a quasi-circular gravity anomaly may be the source region of the Eratosthenain-aged mare basalts in the Rümker region.…”

Section: Brightness Temperaturementioning

confidence: 99%

Thermophysical Features of the Rümker Region in Northern Oceanus Procellarum: Insights from CE-2 CELMS Data

et al. 2020

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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.

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Section: Brightness Temperaturementioning

confidence: 99%

Thermophysical Features of the Rümker Region in Northern Oceanus Procellarum: Insights from CE-2 CELMS Data

et al. 2020

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“…The average crater density of the CE‐5 candidate region has been determined, in order to couple with the radiometric ages of the CE‐5 returned sample and refine the lunar cratering chronology (Jia et al., 2020; Wu et al., 2018). Other studies investigated the lunar regolith thickness (Yue et al., 2019) and the rock abundance in the candidate region (Wu et al., 2018), in order to service the safe landing and in‐situ sampling of this mission. All these works provide a geological background for the CE‐5 samples and serve as the necessary context for lunar chronology calibration points to be derived from the CE‐5 landing site.…”

Section: Introductionmentioning

confidence: 99%

Possible Non‐Mare Lithologies in the Regolith at the Chang’E‐5 Landing Site: Evidence From Remote Sensing Data

Hou

Zhang

et al. 2021

JGR Planets

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“…The authors considered that the 10 mare units interpreted in Qian et al [5] could be reclassified into 7 units including a hidden construct on Mons Rümker. Based on the information of concentric craters, the lunar regolith in this region was estimated with a range from 0.74 m to 18.00 m in thickness [8]. The deep and thick buried mare basalts, which were related to an impact event, indicated the quasi-circular anomaly features.…”

Section: Introductionmentioning

confidence: 99%

Reunderstanding Geomorphological Features in Chang'e-5 Sampling Region Based on Multiscale Roughness Model

Cao

Meng

Dong

et al. 2021

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Chang'e-5 (CE-5) mission was successful to return samples up to 1.8 kg from the northeastern part of the Rümker region, Moon. These samples can provide new understandings for the basaltic volcanism of northern Oceanus Prcellarum. Therefore, the terrain-related analysis of the Rümker region will become a hotspot in the recent and latter studies. As a typical surface analyzing method, multi-scale surface roughness has been used in planetary studies for a long time. However, fewer studies of topographic roughness analysis are applied in the Rümker region. The visual interpretations directly from digital elevation models (DEMs) or images potentially cause controversial results. To provide a way for re-understanding the geomorphological features in Rümker region, we investigate a new roughness analyzing method to extract the topographic signatures by using a wavelet-based V-system of degree 1. Based on these signatures, the hectometer-and kilometer-scale roughness are calculated and mapped. The multi-scale roughness textural changes are applied to provide new understandings of the geomorphological features of Rümker region. Our results demonstrate that: (1) most of younger mare units show lower roughness textures following with the scale increases. Especially at kilometer scales, a new understanding is given to units Im1 and Em1 based on the statistical variations of the geologic units; (2) Compared with the results obtained from the optical data, roughness maps provide a new way to recognize the wrinkle ridges in the Rümker region. The wrinkle ridges are re-evaluated based on the hectometer-and kilometer-scale roughness textural changes.

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Lunar regolith thickness deduced from concentric craters in the CE-5 landing area

Cited by 49 publications

References 45 publications

Thermophysical Features of the Rümker Region in Northern Oceanus Procellarum: Insights from CE-2 CELMS Data

Thermophysical Features of the Rümker Region in Northern Oceanus Procellarum: Insights from CE-2 CELMS Data

Possible Non‐Mare Lithologies in the Regolith at the Chang’E‐5 Landing Site: Evidence From Remote Sensing Data

Reunderstanding Geomorphological Features in Chang'e-5 Sampling Region Based on Multiscale Roughness Model

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