Data Analysis of Chang'E-1 Gamma-Ray Spectrometer and Global Distribution of U, K, and Th Elemental Abundances

被引：8

作者：

Zou Yongliao ^{[1
]}

Zhang Liyan ^{[1
]}

Liu Jianzhong ^{[1
]}

Mu Lingli ^{[1
]}

Ren Xin ^{[1
]}

Zhang Guangliang ^{[1
]}

Chang Jin ^{[2
]}

Yan Jun ^{[1
]}

Zhang Nan ^{[2
]}

Zhang Hongbo ^{[1
]}

Lu Chang ^{[1
]}

Liu Jianjun ^{[1
]}

Zuo Wei ^{[1
]}

Su Yan ^{[1
]}

Wen Weibin ^{[1
]}

Bian Wei ^{[1
]}

Wang Min ^{[1
]}

Xu Chun ^{[1
]}

Li Chunlai ^{[1
]}

Ouyang Ziyuan ^{[1
]}

机构：

[1] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China

[2] Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China

来源：

ACTA GEOLOGICA SINICA-ENGLISH EDITION | 2011年 / 85卷 / 06期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

Chang'E-1; payloads; gamma rays; elemental abundances;

D O I：

10.1111/j.1755-6724.2011.00589.x

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

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 degrees x 5 degrees equal-area pixel are acquired by CE-1 GRS data. The paper gives a preliminary analysis of the uncertainties of the elemental abundances.

引用

页码：1299 / 1309

页数：11

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