月表典型区撞击坑形态分类及分布特征

发布时间：2018-05-12 22:26

本文选题：嫦娥一号 + 撞击坑　；参考：《地学前缘》2012年06期

【摘要】：月球表面环形构造主要有撞击坑、火山口和月海穹窿3种,其中撞击坑分布最广泛,是研究月表环形构造的主要内容。由于月表撞击坑数量大、种类多及其形成伴随着整个月球地质的演化过程,因此这种月表地形地貌比较完整地记录了月球表面地貌随时间的改造过程以及改造类型。文中通过研究撞击坑遥感影像及形貌特征,总结归纳为简单型、碗型、平底型、中央隆起型、同心环型、复杂型及月海残留型7种撞击坑类型,用来描述月表典型区域撞击坑的形态特征。从结构和物质两方面进行了月表典型区域撞击坑的形态地貌参数提取,综合利用嫦娥一号CCD影像数据、LROC数据,得到了该区域撞击坑形态数据(坑底、坑唇、坑壁、坑缘、溅射物覆盖层、中央峰)和形态测量数据(直径、深度、地理位置)。研究发现,LQ-4地区的撞击坑分布可分为月陆区和月海区,月陆区的撞击坑多以中小型撞击坑为主,其分布密度极高,形成年代较早,月海区撞击坑多为年轻的撞击坑,分化程度较低,分布密度也较低。
[Abstract]:There are three kinds of crater and lunar dome on the lunar surface. The crater is the most widely distributed which is the main content of the research on the lunar surface ring structure. Due to the large number of lunar surface impact craters, the variety and formation of the lunar surface impact craters are accompanied by the evolution process of the whole lunar geology, so the lunar surface topography and geomorphology are relatively complete records of the lunar surface geomorphology transformation process and transformation type with time. By studying the remote sensing images of impact craters and their morphological features, this paper summarizes seven types of impact craters: simple type, bowl type, flat bottom type, central uplift type, concentric ring type, complex type and lunar sea residual type. Used to describe the morphological characteristics of impact craters in typical areas of the lunar surface. The morphological and geomorphological parameters of the impact crater in the typical area of the lunar surface are extracted from the aspects of structure and matter. The morphological data of the impact crater in this area (bottom, lip, wall, edge of the crater) are obtained by synthetically using the Chang 'e-1 CCD image data and the LROC data. Sputtering coating, central peak) and morphology measurement data (diameter, depth, geographical location). It is found that the distribution of impact craters in the LQ-4 area can be divided into the lunar land area and the lunar sea area. The impact craters in the lunar land area are mainly small and medium-sized impact craters, and their distribution density is very high, and the impact craters are formed earlier. The impact craters in the lunar sea area are mostly young impact craters. The degree of differentiation is lower and the density of distribution is lower.
【作者单位】：中国地质大学(北京)地球科学与资源学院;北京市国土资源信息开发研究重点实验室;
【基金】：国家高技术研究发展计划“863”项目(2009AA122201)
【分类号】：P184

【相似文献】