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首页> 外文期刊>Frontiers of earth science >Difference of brightness temperatures between 19.35 GHz and 37.0 GHz in CHANG'E-1 MRM: implications for the burial of shallow bedrock at lunar low latitude
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Difference of brightness temperatures between 19.35 GHz and 37.0 GHz in CHANG'E-1 MRM: implications for the burial of shallow bedrock at lunar low latitude

机译：CHANG'E-1 MRM中19.35 GHz和37.0 GHz之间的亮温差：对月球低纬度浅基岩埋葬的影响

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摘要

Indications of buried lunar bedrock may help us to understand the tectonic evolution of the Moon and provide some clues for formation of lunar regolith. So far, the information on distribution and burial depth of lunar bedrock is far from sufficient. Due to good penetration ability, microwave radiation can be a potential tool to ameliorate this problem. Here, a novel method to estimate the burial depth of lunar bedrock is presented using microwave data from Chang'E-1 (CE-1) lunar satellite. The method is based on the spatial variation of differences in brightness temperatures between 19.35 GHz and 37.0 GHz (Delta TB). Large differences are found in some regions, such as the southwest edge of Oceanus Procellarum, the area between Mare Tranquillitatis and Mare Nectaris, and the highland east of Mare Smythii. Interestingly, a large change of elevation is found in the corresponding region, which might imply a shallow burial depth of lunar bedrock. To verify this deduction, a theoretical model is derived to calculate the Delta TB. Results show that Delta TB varies from 12.7 K to 15 K when the burial depth of bedrock changes from 1 m to 0.5 m in the equatorial region. Based on the available data at low lunar latitude (30 degrees N-30 degrees S), it is thus inferred that the southwest edge of Oceanus Procellarum, the area between Mare Tranquillitatis and Mare Nectaris, the highland located east of Mare Smythii, the edge of Pasteur and Chaplygin are the areas with shallow bedrock, the burial depth is estimated between 0.5 m and 1 m.
机译：埋藏的月球基岩的迹象可能有助于我们了解月球的构造演化，并为形成月球巨石提供一些线索。到目前为止，有关月球基岩分布和埋藏深度的信息还远远不够。由于具有良好的穿透能力，微波辐射可以成为缓解这一问题的潜在工具。在这里，使用来自Chang娥一号（CE-1）月球卫星的微波数据，提出了一种估算月球基岩埋葬深度的新方法。该方法基于19.35 GHz和37.0 GHz（Delta TB）之间的亮度温度差异的空间变化。在某些地区存在较大差异，例如Oceanus Procellarum的西南边缘，Tranquillitatis母马和Nectaris母马之间的地区以及Smythii母马以东的高地。有趣的是，在相应区域发现高程变化很大，这可能意味着月球基岩的埋藏深度较浅。为了验证这一推论，导出了一个理论模型来计算Delta TB。结果表明，当赤道地区基岩的埋藏深度从1 m变为0.5 m时，Delta TB从12.7 K变为15K。根据低月度纬度（北纬30度至南纬30度）上的可用数据，可以推断出大洋洲Procellarum的西南边缘，即位于Mare Smythii以东的高地Mare Tranquillitatis和Mare Nectaris之间的区域。巴斯德（Pasteur）和查普利金（Chaplygin）的基岩较浅，埋藏深度估计在0.5 m至1 m之间。

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  • 来源
    《Frontiers of earth science》 |2016年第1期|108-116|共9页
  • 作者

    Yu Wen; Li Xiongyao; Wei Guangfei; Wang Shijie;

  • 作者单位

    Chinese Acad Sci, Inst Geochem, Lunar & Planetary Sci Res Ctr, Guiyang 550002, Peoples R China|Univ Chinese Acad Sci, Beijing 100039, Peoples R China;

    Chinese Acad Sci, Inst Geochem, Lunar & Planetary Sci Res Ctr, Guiyang 550002, Peoples R China;

    Chinese Acad Sci, Inst Geochem, Lunar & Planetary Sci Res Ctr, Guiyang 550002, Peoples R China|Univ Chinese Acad Sci, Beijing 100039, Peoples R China;

    Chinese Acad Sci, Inst Geochem, Lunar & Planetary Sci Res Ctr, Guiyang 550002, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    moon; CE-1; brightness temperature; bedrock; burial depth;

    机译：月亮;CE-1;亮度温度;基岩;埋藏深度;

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