DOI: 10.1029/2018JE005589
Scopus记录号: 2-s2.0-85050487142
论文题名: Image Reconstruction Techniques in Neutron and Gamma Ray Spectroscopy: Improving Lunar Prospector Data
作者: Wilson J.T. ; Lawrence D.J. ; Peplowski P.N. ; Cahill J.T.S. ; Eke V.R. ; Massey R.J. ; Teodoro L.F.A.
刊名: Journal of Geophysical Research: Planets
ISSN: 21699097
出版年: 2018
卷: 123, 期: 7 起始页码: 1804
结束页码: 1822
语种: 英语
英文关键词: gamma ray spectroscopy
; image reconstruction
; Moon
; neutron spectroscopy
; surface composition
英文摘要: We present improved resolution maps of the Lunar Prospector Neutron Spectrometer thermal, epithermal, and fast neutron data and gamma ray spectrometer Th-line fluxes via global application of pixon image reconstruction techniques. With the use of mock data sets, we show that the pixon image reconstruction method compares favorably with other methods that have been used in planetary neutron and gamma ray spectroscopy. The improved thermal neutron maps are able to clearly distinguish variations in composition across the lunar surface, including within the lunar basins of Hertzsprung and Schrödinger. The improvement in resolution reveals a correlation between albedo and thermal neutron flux within the basins. The consequent increase in dynamic range confirms that Hertzsprung basin contains one of the most anorthositic parts of the lunar crust, including nearly pure anorthite over a region tens of kilometers in diameter. At Orientale, the reconstructed epithermal neutron data show broad overlap with circular polarization ratio but there remains a mismatch between measures of regolith maturity that sample the surface and those that probe the near subsurface, which is consistent with a complex layering scenario. ©2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113637
Appears in Collections: 气候减缓与适应
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作者单位: The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States; Institute for Computational Cosmology, Department of Physics, Science Laboratories, University of Durham, Science Laboratories, Durham, United Kingdom; BAER, Planetary Systems Branch, Space Sciences and Astrobiology Division, NASA Ames Research Center, Moffett Field, CA, United States
Recommended Citation:
Wilson J.T.,Lawrence D.J.,Peplowski P.N.,et al. Image Reconstruction Techniques in Neutron and Gamma Ray Spectroscopy: Improving Lunar Prospector Data[J]. Journal of Geophysical Research: Planets,2018-01-01,123(7)