本文選題：Hurst指數(shù)　切入點(diǎn)：粗糙度　出處：《地學(xué)前緣》2012年06期 　論文類(lèi)型：期刊論文

【摘要】：月球遙感是在登月技術(shù)還不完善的情況下,利用遙感數(shù)據(jù),通過(guò)各種分析來(lái)研究月球演化、內(nèi)部結(jié)果和表面特征的方法。粗糙度是地表隆升、沉降、侵蝕和火山噴射物覆蓋在行星表面留下的記錄,因此對(duì)行星表面粗糙度的定量分析可以精確反映其地質(zhì)演化過(guò)程。而Hurst指數(shù)則是粗糙度的精確反映。文中利用LOLA制作的DEM,以月球正面虹灣為例,選取水平方向的12條剖面和垂直方向的15條剖面對(duì)其各粗糙度參數(shù)進(jìn)行計(jì)算,并結(jié)合月表成熟度對(duì)Hurst指數(shù)與底層年齡的相關(guān)性進(jìn)行了分析,得出如下結(jié)論:(1)在1km的剖面長(zhǎng)度上,虹灣地區(qū)均方根高程的平均值在3m左右;在0.2～3km研究尺度范圍內(nèi),虹灣地區(qū)的坡度不超過(guò)2°,說(shuō)明該地表起伏度小。(2)虹灣地區(qū)的Hurst指數(shù)跨度比較大,尤其在垂直方向(南北)上,在0.4到0.9之間,表明其構(gòu)造樣式豐富。(3)在0.2～3km研究尺度范圍內(nèi),Hurst指數(shù)自北往南增大、自西往東增大,表示在虹灣地區(qū)粗糙度自西北向東南方向增大。(4)虹灣地區(qū)地質(zhì)年齡為自西北向東南方向變小,與Hurst指數(shù)增大方向一致。(5)在月表年輕撞擊坑地區(qū)月表成熟度與Hurst指數(shù)大致呈負(fù)相關(guān)關(guān)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 擄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.
【作者單位】： 中國(guó)地質(zhì)大學(xué)(北京)地球科學(xué)與資源學(xué)院;黃河勘探規(guī)劃設(shè)計(jì)有限公司;北京師范大學(xué)地理學(xué)與遙感科學(xué)學(xué)院;中國(guó)科學(xué)院遙感應(yīng)用研究所;
【基金】：國(guó)家高技術(shù)研究發(fā)展計(jì)劃“863”項(xiàng)目(2009AA122201)
【分類(lèi)號(hào)】：P184

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本文編號(hào)：1639179