月球正面撞擊坑的空間分布特征分析
[Abstract]:The spatial disequilibrium of the distribution of the frontal craters on the moon is studied by using the "Chang'e 1" image and DEM data. This paper uses mathematical statistics and spatial analysis to study the spatial disequilibrium of the distribution of the frontal craters on the moon. It is mainly reflected in the following: (1) the impact craters of the larger frontal diameter of the moon are mainly distributed in the lunar region, and the concentration trend is obvious, while the moon sea area is obvious. The larger diameter impact craters are less distributed, and there are a large number of smaller diameter craters; (2) the larger impact craters have a certain randomness on the monthly meter, while the smaller diameter craters are concentrated in the monthly meter; (3) the impact pit density of the equatorial region is less than the two polar region, and the number of the impingement pits in the leading hemisphere is less than the following hemisphere; the moon sea is less than the moon sea. The density of the impact pits in the region is less than the monthly land area; the area with the largest density is located in the middle and south of the lunar front; (4) the impact pit of the frontal depth of the moon is mainly concentrated in the lunar region, and is more concentrated near the central meridian of the Antarctic, and the depth ratio is at a higher level between 57 and 24 S, and the maximum value is near 14 N. The value of the value fluctuates around 0.14, from the region to the north and south poles, the depth ratio decreases gradually, and the minimum value is found near the Antarctic; (5) the mean value of the maximum value of the impact crater is greater than that of the sea area; the mean regularity of the maximum value of the slope is obvious, that is, the mean value of the maximum value of the impact crater is gradually increased from the equator to the two poles. The spatial distribution has certain spatial agglomeration and difference in longitude and latitude. The coupling relationship between the characteristics and the theory of crater formation needs further study.
【作者單位】: 中國科學(xué)院地理科學(xué)與資源研究所資源與環(huán)境信息系統(tǒng)國家重點實驗室;中國科學(xué)院大學(xué);東北師范大學(xué)城市與環(huán)境科學(xué)學(xué)院;
【基金】:國家自然科學(xué)基金項目(41171332) 中國科學(xué)院地理科學(xué)與資源研究所知識創(chuàng)新項目(201001005)
【分類號】:P184
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