| Data Analysis of Chang’E-1 Gamma-Ray Spectrometer and Global Distribution of U, K, and Th Elemental Abundances |
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| 引用本文： | ZOU Yongliao,ZHANG Liyan,LIU Jianzhong,MU Lingli,REN Xin,ZHANG Guangliang,CHANG Jin,YAN Jun,ZHANG Nan,ZHANG Hongbo,Lü Chang,LIU Jianjun,ZUO Wei,SU Yan,WEN Weibin,BIAN Wei,WANG Min,XU Chun,LI Chunlai and OUYANG Ziyuan.Data Analysis of Chang’E-1 Gamma-Ray Spectrometer and Global Distribution of U, K, and Th Elemental Abundances[J].Acta Geologica Sinica,2011,85(6):1299-1309. |
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| 作者姓名： | ZOU Yongliao ZHANG Liyan LIU Jianzhong MU Lingli REN Xin ZHANG Guangliang CHANG Jin YAN Jun ZHANG Nan ZHANG Hongbo Lü Chang LIU Jianjun ZUO Wei SU Yan WEN Weibin BIAN Wei WANG Min XU Chun LI Chunlai and OUYANG Ziyuan |
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| 作者单位： | 1 National Astronomical Observatories, the Chinese Academy of Sciences, Beijing 100012, China;2 Purple Mountain Observatory, the Chinese Academy of Sciences, Nanjing 210008, China |
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| 基金项目： | The authors would like to thank all the CE-1 GRS team members for their outstanding work. The authors are very thankful for the constructive comments and suggestions from two anonymous reviewers. This work is supported by the National High Technology Research and Development Program of China (Nos. 2008AA12A212 and 2010AA122202) and the National Natural Science Foundation of China (Nos. 41040031 and 40904024). |
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| 摘 要： | Gamma-ray spectrometer (GRS) is one of the main payloads on the Chang’E-1 (CE-1) lunar probe, mainly aimed to detect the elemental abundances and distributions on the lunar surface. At 03:58 on 28 November 2007, it performed the first observation of the lunar gamma rays. As of 24 October 2008, 2105?h of effective gamma rays spectra had been acquired by CE-1 GRS, which covers the whole surface of the moon. This paper mainly describes the data processing procedures and methods of deriving the elemental abundances by using the CE-1 GRS time series corrected spectra: first, to bin data into pixels for mapping; then, to perform a background deduction of the cumulative spectra and obtain a peak area of the elements; and finally, to use the elemental abundances inversion model to produce the elemental abundances. Based on these processing methods, the global abundance maps of U, K, and Th at a 5°×5° equal-area pixel are acquired by CE-1 GRS data. The paper gives a preliminary analysis of the uncertainties of the elemental abundances
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| 关 键 词： | Chang’E-1 payloads gamma rays elemental abundances |
| 收稿时间： | 2010/11/30 0:00:00 |
| 修稿时间： | 2011/1/19 0:00:00 |
Data Analysis of Chang'E‐1 Gamma‐Ray Spectrometer and Global Distribution of U,K, and Th Elemental Abundances |
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| Authors: | ZOU Yongliao ZHANG Liyan LIU Jianzhong MU Lingli REN Xin ZHANG Guangliang CHANG Jin YAN Jun ZHANG Nan ZHANG Hongbo LÜ Chang LIU Jianjun ZUO Wei SU Yan WEN Weibin BIAN Wei WANG Min XU Chun LI Chunlai OUYANG Ziyuan |
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| Institution: | 1. National Astronomical Observatories, the Chinese Academy of Sciences, Beijing 100012, China;2. Purple Mountain Observatory, the Chinese Academy of Sciences, Nanjing 210008, China |
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| Abstract: | Gamma‐ray spectrometer (GRS) is one of the main payloads on the Chang'E‐1 (CE‐1) lunar probe, mainly aimed to detect the elemental abundances and distributions on the lunar surface. At 03:58 on 28 November 2007, it performed the first observation of the lunar gamma rays. As of 24 October 2008, 2105 h of effective gamma rays spectra had been acquired by CE‐1 GRS, which covers the whole surface of the moon. This paper mainly describes the data processing procedures and methods of deriving the elemental abundances by using the CE‐1 GRS time series corrected spectra: first, to bin data into pixels for mapping; then, to perform a background deduction of the cumulative spectra and obtain a peak area of the elements; and finally, to use the elemental abundances inversion model to produce the elemental abundances. Based on these processing methods, the global abundance maps of U, K, and Th at a 5°×5° equal‐area pixel are acquired by CE‐1 GRS data. The paper gives a preliminary analysis of the uncertainties of the elemental abundances. |
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| Keywords: | Chang'E‐1 payloads gamma rays elemental abundances |
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