The Morphological Classification and Distribution Characteristics of the Craters in the LQ-4 Area
详细信息
- 责任者：He Shujun (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Chen Jianping
- 刊名：Earth Science Frontiers
- 出版年：2012
- 卷期：19(6)
- 关键词：月球 ; Moon ; 冲击构造 ; impact structure
- 页码：p.83-89
- 图表：3 illus., 20 refs.
- 分类号：0100
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
The major circular structures on lunar surface are craters,volcanic rings and lunar fornix.The most widespread geologic tectonic elements on lunar surface are craters.Because there are a great number and a large variety of craters,their formation processes are proceeding along with the evolution of the entire lunar geology.These lunar surface structures may give us a nearly complete record of the processes and types of transformation of lunar surface landforms over time,and the history of the planet.On the basis of the remote sensing images and the morphological characteristics of the impact craters,the craters on the moon can be classified into 7 types,including the normal,bowl-shaped,flat-bottomed,central mound,complicated and residual craters.Using the Chang’e-Ⅰ images and the LROC data and viewing from the structure and material aspects,we have compiled the new morphologic(crater floor,crater rim crest,crater wall,crater rim,crater rim material,and central peak) and morphometric(diameter,depth,longitude and latitude) data of the craters in the LQ-4 area.The results showed that the craters in the LQ-4 area could be categorized according to their spatial distribution,i.e.,those in lunar mare area and those in highland area.In the lunar highland area,the craters are mainly small or medium-sized,distributed with high-density and inhomogeneous,and those in the lunar mare area are fresh,with larger diameters,distributed with low-density.