Yu Gang, Pang Yong, Xu Menglong, Qian Yuqi
School of Electrical Engineering, University of Jinan, Jinan, 250022, China.
China Academy of Space Technology, Beijing Spacecrafts, Beijing, 100190, China.
Sci Rep. 2025 May 13;15(1):16507. doi: 10.1038/s41598-025-00994-4.
Lunar regolith is an unconsolidated fine-grained layer overlaying on the entire lunar surface, formed by continuous impact and space weathering processes. The production of lunar regolith is both related to the protolith internal properties and the external gardening primarily modulated by impact flux. The penetrating radar data of Chang'E-5 is used to investigate the subsurface structures and the production and evolution of lunar regolith at the landing site. Together with the penetrating radar results from Chang'E-3, we found that the regolith production rates on the ejecta blanket of fresh craters are faster than Apollo sites. The speed up of the regolith production for Chang'E-3 and Chang'E-5 sites may be due to the increased impact flux during the recent history of the solar system, that also recorded by the impact beads and the fragile nature of the ejecta blanket at the two sites. The result of this article can be highly beneficial to the radar signal processing and further explanation of Chang'E-6.
月球风化层是覆盖在整个月球表面的一层未固结的细颗粒层，由持续的撞击和空间风化过程形成。月球风化层的产生既与原岩的内部特性有关，也与主要受撞击通量调制的外部“园艺作用”有关。嫦娥五号的穿透雷达数据用于研究着陆点的地下结构以及月球风化层的产生和演化。结合嫦娥三号的穿透雷达结果，我们发现新鲜撞击坑喷出物覆盖层上的风化层产生速率比阿波罗着陆点更快。嫦娥三号和嫦娥五号着陆点风化层产生速率加快可能是由于在太阳系近期历史中撞击通量增加，这也在撞击珠以及这两个着陆点喷出物覆盖层的脆弱性质中有所体现。本文的结果对嫦娥六号的雷达信号处理和进一步解释非常有益。
