基于粗糙度的月表虹湾地区地形地貌解译

行星表面粗糙度是表面侵蚀、沉降和隆升等作用在行星表面留下的记录,对其进行的定量分析可以精确地反映其表面地质构造过程.对月球的虹湾地区选取水平方向的12条剖面进行了粗糙度各参数(均方根高程、均方根偏差、均方根坡度、Hurst指数)的计算,结果表明:①在1 km的剖面长度上,虹湾地区均方根高程的平均值在3 m左右；在0.2...

The Interpretation of the Land Form of Sinus Iridum on the Moon Based on the Roughness

The planetary surface roughness is the record of erosion,deposition,uplift and other geological processes on the planetary surface,and hence serves as a prediction for the geological age of the planetary surface.In this paper,twelve profiles were selected in the horizontal direction of the Sinus Iridum in the moon,and several parameters of roughness of those profiles were studied.Some results have been obtained: ①The average of RMS height along the profile 1 km in length is about 3m.In addition,within the research scale selected in this paper(0.2~3 km),the slope of Sinus Iridum area does not exceed 2 °.This means that the surface of Sinus Iridum is relatively smooth.②Hurst exponent of Sinus Iridum is mainly concentrated from 0.5 to 0.78,which means that the surface morphology is rather homogeneous.③Low latitude areas(lower than 44.3°N)have relatively high Hurst exponent(from 0.6 to 0.8),and high latitude areas(higher than 44.3°N)usually have lower Hurst exponent(from 0.5 to 0.8).④The roughness may be used as a means to determine the relative geological age.