本文關(guān)鍵詞： 月球撞擊坑 空間分布 撞擊坑形貌 定量化　出處：《東北師范大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：月球是離地球最近的天體，理所當(dāng)然地成為了人類進(jìn)行天文活動(dòng)和空間探測(cè)活動(dòng)的首選目標(biāo)，月球運(yùn)動(dòng)不僅僅對(duì)人類的生產(chǎn)和活動(dòng)產(chǎn)生重大的影響，而且對(duì)人類的文化發(fā)展與文明進(jìn)步產(chǎn)生了深刻的影響。 從蘇聯(lián)拍攝的第一幅月貌的衛(wèi)星影像上，我們可以直接看到月球表面的形貌，其中最明顯的月貌就是月表的撞擊坑。月表的形貌反應(yīng)了月表的地貌特征和月球的狀態(tài)，同時(shí)它也記錄了月球的形成過(guò)程和演化的信息。對(duì)月貌的探究，可以為月球的起源和演化提供直接的證據(jù)。 自從20世紀(jì)以后，研究者們對(duì)月球表面的撞擊坑進(jìn)行了大量的研究。學(xué)者們進(jìn)行撞擊坑的識(shí)別和形態(tài)特征描述，對(duì)月球的撞擊坑的空間分布狀態(tài)進(jìn)行研究，進(jìn)而研究撞擊坑的形成機(jī)制、月球的歷史演化和地質(zhì)變遷。 本文利用嫦娥一號(hào)獲取的CCD影像數(shù)據(jù)和DEM數(shù)據(jù)對(duì)撞擊坑的空間分布和形貌特征進(jìn)行定量化的描述。在研究全月球撞擊坑空間分布時(shí)，，發(fā)現(xiàn)撞擊坑空間分布的差異性。月球表面撞擊坑在空間上是隨機(jī)分布的，但是局部體現(xiàn)出一定的聚集現(xiàn)象。整個(gè)月球撞擊坑以10km以下的中小型撞擊坑為主，占全月球撞擊坑數(shù)量的86.17%。月海地區(qū)以直徑小于2km的撞擊坑為主導(dǎo)，占月海全部撞擊坑數(shù)量的89.64%；而月陸地區(qū)以10km以下的撞擊坑居多，占月陸全部撞擊坑數(shù)量的85.16%。除此之外，直徑大于35km的大型撞擊坑主要分布在月陸地區(qū)。撞擊坑在月球表面的經(jīng)緯度方向也存在一定的分布規(guī)律。對(duì)于撞擊坑的形態(tài)方面，大多數(shù)學(xué)者以撞擊坑的直徑、深度等方面對(duì)撞擊坑進(jìn)行描述，本文將從撞擊坑的總體尺寸、形態(tài)、中央峰等方面對(duì)撞擊坑的形貌特征進(jìn)行定量化描述。
[Abstract]:The Moon is the closest celestial body to the Earth and has naturally become the preferred target for human astronomical and space exploration activities. The Moon's motion not only has a major impact on human production and activities, And the development of human culture and civilization has a profound impact. From the first satellite image taken by the Soviet Union, we can see directly the topography of the lunar surface, the most obvious of which is the impact crater of the lunar surface. The appearance of the lunar surface reflects the geomorphological characteristics of the lunar surface and the state of the moon. At the same time, it also records the formation process and evolution information of the moon. The exploration of the lunar features can provide direct evidence for the origin and evolution of the moon. Since 20th century, researchers have done a lot of research on impact craters on the surface of the moon. Scholars have identified impact craters and described their morphological features, and studied the spatial distribution of impact craters on the moon. The formation mechanism of impact crater, the historical evolution and geological change of the moon are studied. In this paper, the spatial distribution and morphologic features of impact craters are quantitatively described by using the CCD image data and DEM data obtained from Chang 'e-1. In the study of the spatial distribution of the impact craters on the whole moon, It is found that the spatial distribution of impact craters is different. The impact craters on the surface of the moon are randomly distributed in space, but there is a local aggregation phenomenon. The whole crater is dominated by small and medium impact craters below 10 km. The Yuehai area is dominated by craters less than 2 km in diameter, accounting for 89.64% of the total number of impact craters in the lunar sea, while the lunar land area is dominated by craters below 10 km, accounting for 85.16% of the total number of impact craters in the lunar land. The large impact craters larger than 35 km in diameter are mainly distributed in the lunar land area. There are also some distributions of the impact craters in the longitude and latitude directions of the lunar surface. As for the shape of the impact craters, most scholars use the diameter of the impact craters. The depth of the impact crater is described in terms of its total size, shape and central peak.
【學(xué)位授予單位】：東北師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：P184.8

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本文編號(hào)：1541738