Prognosis of Ti abundance in Sinus Iridum using a nonlinear analysis of Chang' E‐1 Interference Imaging Spectrometer imagery

Earth and Space Science

Xing Tingyan¹  Liu Fujiang²  Liu Li¹  Li Chan²  Zhang Ying²  Qiao Le²  Yang Rong²  Zheng Xiaopo²  Zhu Meng² 

[1] Faculty of Information Engineering, China University of Geosciences, Beijing, China;Faculty of Information Engineering, China University of Geosciences, Wuhan, China

关键词: Sinus Iridum;    spectral features;    Interference Imaging Spectrometer (IIM) imagery;    Ti abundance in lunar soils;    China's Lunar Exploration Program;   

DOI  :  10.1002/2014EA000023

来源: Wiley

【 摘 要 】

Abstract

We report here on the relationship between titanium abundance and its spectral features on the Moon, using 36 craters exposed in Sinus Iridum, a landing site for China's Lunar Exploration Program. Six absorption parameters (full width at half maximum, absorption depth (D), absorption position (λ), absorption area (A), absorption asymmetry (S), and (R_min)) at the wavelength of 500–550 nm were computed, and the lowest reflectance values (R_min) to characterize the properties of titanium abundance and its spectral features were calculated. The correlation between R_min and TiO₂ abundance calculated by Clementine multispectral images is 0.812, and a second-order polynomial fits the data better with a correlation of 0.837. The TiO₂ abundance inversed by the Chang' E-1 Interference Imaging Spectrometers (IIM) data is thus relatively higher than that revealed by the Clementine data. This good correlation between R_min and TiO₂ abundance may thus be used very effectively to estimate the Ti distribution on the surface of the Moon by IIM hyperspectral data.

【 授权许可】

CC BY-NC-ND   
©2015. The Authors.

Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.