Lunar surface heat flow mapping from radioactive elements measured by Lunar Prospector

	Lunar surface heat flow mapping from radioactive elements measured by Lunar Prospector
	Zhang, Dan 1; Li, Xiongyao 2; Li, Qingxia 1; Lang, Liang 1; Zheng, Yongchun3
刊名	ACTA ASTRONAUTICA
	2014-06-01
卷号	99 页码:85-91
关键词	Lunar surface heat flow Radioactive elements Heat production rate
英文摘要	An accurate estimate of global surface heat flow is important because it provides strong constraints on interior thermal model and understanding of the thermal state and geologic evolution of the Moon. In this paper, a distribution map of lunar surface heat flow is derived from calibrated Lunar Prospector gamma-ray spectrometer data (K, U and Th abundances). It shows that surface heat flow varies regionally from about 10.6 mW/m(2) to 66.1 mW/m(2), which is in the same order of magnitude as previous results. In the calculation, lunar surface heat flow includes the heat flow from the non-uniform distribution of radioactive elements K, U and Th and that from secular cooling of the Moon. The calculation of heat flow from radioactive elements is based on the assumption that the radioactive decay of K, U and Th on the Moon is the same as that on the Earth. The heat flow from secular cooling of the Moon is assumed to be equal to the global average radioactive heat flow. Firstly we construct a relationship between radioactive elements K, U and Th and lunar surface heat flow. The key parameter of the characteristic length scale in the relationship is determined by measured surface heat flow and Th abundances at Apollo 15 and 17 landing sites. Then the distribution of lunar surface heat flow is derived by combining other parameters such as lunar crustal thickness measured by Clementine and lunar crustal density. In addition, correlation analysis of the three radioactive elements is carried out due to the higher resolution of Th abundance and for ease of calculation. (C) 2014 IAA. Published by Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
WOS记录号	WOS:000335612000008
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6478]
专题	国家天文台_月球与深空探测研究部
作者单位	1.Huazhong Univ Sci & Technol, Sci & Technol Multispectral Informat Proc Lab, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Dan,Li, Xiongyao,Li, Qingxia,et al. Lunar surface heat flow mapping from radioactive elements measured by Lunar Prospector[J]. ACTA ASTRONAUTICA,2014,99:85-91.
APA	Zhang, Dan,Li, Xiongyao,Li, Qingxia,Lang, Liang,&Zheng, Yongchun.(2014).Lunar surface heat flow mapping from radioactive elements measured by Lunar Prospector.ACTA ASTRONAUTICA,99,85-91.
MLA	Zhang, Dan,et al."Lunar surface heat flow mapping from radioactive elements measured by Lunar Prospector".ACTA ASTRONAUTICA 99(2014):85-91.