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1. Geologic characteristics of the Chang'E-3 exploration region | |||
ZHAO Jiannan,HUANG Jun,QIAO Le,XIAO ZhiYong,HUANG Qian,WANG Jiang,HE Qi,XIAO Long | |||
Earth Science 21 January 2014 | |||
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Abstract:We present topographic, geomorphologic and compositional characteristics of a 1 ×1 (~660 km2) region centered near the landing site of Chang'E-3 using the highest spatial resolution data available. We analyze the topography and slope using Digital Terrain Model (DTM) generated from Terrain Camera (TC) images. The exploration region is overall relatively flat and the elevation difference is less than 300 m, and the slopes of 80% area are less than 5 . Impact craters in the exploration region are classified into four types based on their degradation states. We investigate the wrinkle ridges visible in the exploration region in detail using TC and Lunar Reconnaissance Orbiter (LRO) Narrow Angle Camera (NAC) images. We calculate FeO and TiO2 abundances using Multispectral Imager (MI) data, and confirm two basaltic units: the northern part belongs to Imbrian low-Ti/very-low-Ti mare basalts, and the southern part is Eratosthenian low-Ti/high-Ti mare basalts. Finally, we produce a geological map and propose the geologic evolution of the exploration region. We also suggest several rover traverses to explore interesting targets and maximize the potential scientific output. | |||
TO cite this article:ZHAO Jiannan,HUANG Jun,QIAO Le, et al. Geologic characteristics of the Chang'E-3 exploration region[OL].[21 January 2014] http://en.paper.edu.cn/en_releasepaper/content/4582936 |
2. A first-principles study of the structural properties of jadeite at high pressure | |||
Fan Xiaoyu ,Wu Xiuling ,Meng Dawei ,Liu Weiping ,Hong Hanlie ,Zheng Guang ,Zheng Jianping | |||
Earth Science 11 January 2010 | |||
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Abstract:The structural properties of jadeite are investigated using plane-wave pseudopotential density functional theory method. As a function of pressure, the monoclinic cell parameters were calculated and the compressibility coefficients are 0.0025, 0.0024 and 0.0025 GPa-1, respectively. The bond length, bond angle, and distortion variation were studied in order to obtain the information of polyhedral compression. The Birch-Murnaghan equation of state was considered in the theoretical calculations of E-V and P-V data for the bulk modulus B0, which were compared with the result based on the linear compressibilities. Comparison between the calculated B0 values and the experimental data suggested that the model provides reasonable insights into crystallographic and physical properties of jadeite. | |||
TO cite this article:Fan Xiaoyu ,Wu Xiuling ,Meng Dawei , et al. A first-principles study of the structural properties of jadeite at high pressure[OL].[11 January 2010] http://en.paper.edu.cn/en_releasepaper/content/38783 |
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