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首页> 外文期刊>Planetary and space science >Geologic characteristics of the Luna 17/Lunokhod 1 and Chang'E-3/Yutu landing sites, Northwest Mare Imbrium of the Moon
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Geologic characteristics of the Luna 17/Lunokhod 1 and Chang'E-3/Yutu landing sites, Northwest Mare Imbrium of the Moon

机译：月球西北马累群月球17 / Lunokhod 1和Chang娥三号/玉图着陆点的地质特征

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摘要

We compared and assessed the results of measurements and observations by the Lunokhod 1 and Yutu rovers, both of which explored the northwestern part of Mare Imbrium. Both sites are within the distinctive Eratosthenian-aged lava flow geologic unit and our comparisons showed that the geologies of these exploration sites are very similar. As in the majority of other areas of the Moon, the dominant landforms in these sites are small impact craters, having various degrees of morphologic prominence and states of preservation, and rock fragments, mostly associated with the rims and interiors of fresh craters. The shape and the degree of preservation of the observed rock fragments in these two sites are similar. In both sites sporadic rock fragments were observed whose morphologies suggest that their source rocks had columnar jointing. Localization of these specific rocks on the rims of 450-470 m in diameter craters implies that the source rocks are at depths of 40-50 m. Regolith in the study areas is typically a few meters thick, but locally can be much thicker. The ground penetrating radar of the Yutu rover revealed the multilayer regolith structure, which is determined by superposition of crater ejecta; with some local variations, this type of the regolith stratigraphy should be typical of the majority of lunar mare sites. The physico-mechanical properties of the regolith in these two sites appear to be rather similar: the bearing capacity ranges from 0.04 to 1.44 kg/cm(2), with a modal value similar to 0.45 kg/cm(2), and the shear strength ranges from 0.02 to 0.1 kg/cm(2), with a modal value similar to 0.05 kg/cm(2). Both these factors decrease by a factor of 3-4 with an increase of surface slope from similar to 2 to 12. The chemical composition of surface materials determined by the rover instruments at these two sites differ from those derived from the remote sensing data for the Eratosthenian-aged basalts on which the two sites are located. This could be partly due to low measurement accuracies, especially in the case of Lunokhod 1, but may also represent real variations in the composition of the surface materials compared to returned lunar samples. Difference in the spatial resolution of the in-situ and remote-sensing analyses should also be taken into account. Recommendations for future lunar rover missions are as follows: (1) to use ground penetrating radar and a robotic arm, and (2) to employ radial study tactics for impact crater documentation and analysis. (C) 2015 Elsevier Ltd. All rights reserved.
机译：我们比较并评估了Lunokhod 1号和Yutu流浪者的测量和观测结果，他们都探索了母马Imbrium的西北部。这两个站点都位于独特的埃拉托斯滕时代的熔岩流地质单元内，我们的比较表明，这些勘探站点的地质非常相似。与月球的其他大部分区域一样，这些地点的主要地貌是小型撞击坑，具有不同程度的形态突出和保存状态，以及岩石碎片，主要与新火山口的边缘和内部有关。在这两个位置观察到的岩石碎片的形状和保存程度相似。在两个地点都观察到零星的岩石碎片，其形态表明它们的源岩具有柱状节理。这些特定岩石位于直径450-470 m的环形山边缘，意味着源岩的深度为40-50 m。研究区域的石通常厚几米，但局部可能要厚得多。 Yutu漫游车的探地雷达显示出多层re石结构，该结构由弹坑弹射的叠加确定。在局部变化的情况下，这种类型的go石地层应该是大多数月球母马站点的典型特征。这两个位置的白云母的物理机械性能似乎相当相似：承载力范围为0.04至1.44 kg / cm（2），模态值类似于0.45 kg / cm（2），并且剪切强度范围从0.02到0.1 kg / cm（2），模态值类似于0.05 kg / cm（2）。随着表面坡度从近似2增大到12，这两个因子都减小了3-4倍。流动站仪器在这两个位置确定的表面物质的化学成分与从遥感数据得出的不同。这两个遗址都位于埃拉托森时代的玄武岩上。这可能部分是由于测量精度较低，尤其是在Lunokhod 1的情况下，但与返回的月球样品相比，也可能代表了表面物质组成的真实变化。还应考虑到原位分析和遥感分析在空间分辨率上的差异。对于未来的月球漫游者任务的建议如下：（1）使用探地雷达和机械臂，（2）运用径向研究策略对撞击坑进行记录和分析。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Planetary and space science》 |2015年第11期|385-400|共16页
  • 作者

    Basilevsky A. T.; Abdrakhimov A. M.; Head J. W.; Pieters C. M.; Wu Yunzhao; Xiao Long;

  • 作者单位

    Russian Acad Sci, Vernadsky Inst, Moscow 119991, Russia|Brown Univ, Dept Earth Environm & Planetary Studies, Providence, RI 02912 USA;

    Russian Acad Sci, Vernadsky Inst, Moscow 119991, Russia;

    Brown Univ, Dept Earth Environm & Planetary Studies, Providence, RI 02912 USA;

    Brown Univ, Dept Earth Environm & Planetary Studies, Providence, RI 02912 USA;

    Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing 210023, Jiangsu, Peoples R China;

    China Univ Geosci, Planetary Sci Inst, Wuhan 430074, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Rover; mare; highland; regolith; crater; ejecta;

    机译：漫游者;母马;高地;雷格利特;火山口;抛射物;

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