月表虹湾Hurst指数分析

发布时间：2018-03-20 12:53

本文选题：Hurst指数　切入点：粗糙度　出处：《地学前缘》2012年06期 　论文类型：期刊论文

【摘要】：月球遥感是在登月技术还不完善的情况下,利用遥感数据,通过各种分析来研究月球演化、内部结果和表面特征的方法。粗糙度是地表隆升、沉降、侵蚀和火山喷射物覆盖在行星表面留下的记录,因此对行星表面粗糙度的定量分析可以精确反映其地质演化过程。而Hurst指数则是粗糙度的精确反映。文中利用LOLA制作的DEM,以月球正面虹湾为例,选取水平方向的12条剖面和垂直方向的15条剖面对其各粗糙度参数进行计算,并结合月表成熟度对Hurst指数与底层年龄的相关性进行了分析,得出如下结论:(1)在1km的剖面长度上,虹湾地区均方根高程的平均值在3m左右;在0.2～3km研究尺度范围内,虹湾地区的坡度不超过2°,说明该地表起伏度小。(2)虹湾地区的Hurst指数跨度比较大,尤其在垂直方向(南北)上,在0.4到0.9之间,表明其构造样式丰富。(3)在0.2～3km研究尺度范围内,Hurst指数自北往南增大、自西往东增大,表示在虹湾地区粗糙度自西北向东南方向增大。(4)虹湾地区地质年龄为自西北向东南方向变小,与Hurst指数增大方向一致。(5)在月表年轻撞击坑地区月表成熟度与Hurst指数大致呈负相关关系。
[Abstract]:Lunar remote sensing is a method to study the evolution, internal results and surface characteristics of the moon by using remote sensing data under the condition that the lunar landing technology is not perfect. The roughness is the uplift and subsidence of the earth's surface. Erosion and volcanic sprays on the planet's surface, Therefore, the quantitative analysis of the surface roughness of a planet can accurately reflect its geological evolution process, while the Hurst exponent is an accurate reflection of the roughness. Twelve sections in horizontal direction and 15 sections in vertical direction are selected to calculate the roughness parameters. The correlation between Hurst exponent and bottom age is analyzed in combination with the maturity of monthly surface. The conclusions are as follows: 1) on the length of 1 km section, The mean root mean square (RMS) elevation of Hongwan area is about 3m, and the slope of Hongwan area is less than 2 掳in the range of 0.2km2, which indicates that the Hurst index span in Hongwan area is relatively large, especially in the vertical direction (north and south). In the range of 0.4 to 0.9, it is indicated that the structural style is rich, and the Hurst exponent increases from north to south and from west to east in the study scale of 0.2 ~ 3 km, and the Hurst exponent increases from north to south, from west to east, from west to east. Indicating that the roughness of the Hongwan area increases from northwest to southeast. 4) the geological age of the Hongwan area decreases from northwest to southeast. In accordance with the increasing direction of Hurst index, there is a negative correlation between monthly surface maturity and Hurst index in the young impact crater area.
【作者单位】：中国地质大学(北京)地球科学与资源学院;黄河勘探规划设计有限公司;北京师范大学地理学与遥感科学学院;中国科学院遥感应用研究所;
【基金】：国家高技术研究发展计划“863”项目(2009AA122201)
【分类号】：P184

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