Distribution and anomaly of microwave emission at Lunar South Pole
Distribution and anomaly of microwave emission at Lunar South Pole
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DOI：
10.1007/s11430-009-0201-1
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发表时间：
2010-03
期刊：
影响因子：
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通讯作者：
WeiGuo Zhang;Jingshan Jiang;Heguang Liu;Xiaohui Zhang;Dehai Zhang;Dihui Li;ChuanDong Xu
中科院分区：
文献类型：
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作者：
WeiGuo Zhang;Jingshan Jiang;Heguang Liu;Xiaohui Zhang;Dehai Zhang;Dihui Li;ChuanDong Xu
摘要近年来，月球极区探测几乎是每一次探月任务的首要目标。其背后的理由是，该地区的照明和冰资源可能对建设月球人类基地非常有帮助。利用新获得的嫦娥一号月球微波测深仪（CELMS）数据，分析了月球的微波辐射特征。月球南极微波亮度温度呈“环中环”的规律分布，从赤道到极依次递减。月球赤道的风化层温度梯度比极地大。光温日差随观测频率的增加而减小。在此基础上，绘制了月球北极和月球北极的微波亮度温度分布图。发现在- 85°纬度以上，微波亮度温度与高程同步。这种现象与雷电条件有关，反映了LSP的温度分布。亮温异常冷点是水或冰的潜在冷阱区，热点则意味着该地有充足的光照资源。
Investigation on Lunar polar area is almost every lunar mission’s primary objective in recent years. The rationale behind it is that illumination and ice resources in this area can be potentially very helpful for constructing lunar human base. In this paper, we analyze microwave radiometric characteristics of the Moon by using the newly acquired Chang’E-1 Lunar Microwave Sounder (CELMS) data. Microwave brightness temperature at Lunar South Pole (LSP) is distributed regularly with a style of “ring-in-ring”, decreasing from equator to pole. Regolith temperature gradient is bigger at lunar equator than at polar area. Brightness temperature diurnal difference decreases with observation frequency. Microwave brightness temperature distribution maps at LSP and Lunar North Pole (LNP) have been made based on the analysis. It is found that microwave brightness temperature becomes to synchronize with elevation beyond −85° latitude. This phenomenon is related to lightening condition and indicates temperaturedistribution at LSP. The brightness temperature anomaly cold points are potentially cold trap areas for water or ice while hot points imply plenty of illumination resources there.