月表线性构造与月海分布的动力学解释  

Dynamics Explanation About Linear Structure on Lunar Surface and Lunar Mare Distribution

作　　者：吴海中[1] 王心源[2] 郭振亚[1] 吉玮[1] 

机构地区：[1]安徽师范大学国土资源与旅游学院,安徽芜湖241003 [2]中国科学院对地观测与数字地球研究中心,北京100094

出　　处：《安徽师范大学学报（自然科学版）》2012年第6期562-567,共6页Journal of Anhui Normal University(Natural Science)

基　　金：国家高技术研究发展计划(863计划)(2010AA122202);国家自然科学基金(60972141)

摘　　要：目前,对月表的线性构造研究得很少,对月表月海、月陆分布的起因同样不明."嫦娥一号"遥感探测表明:月表大部分线性构造集中分布于月球面向地球的正面(48°W-54°N),统计的86条月表线性其走向主要是N-S、NE-SW、NW-SE;22个月海大部分位于月球正面,且其中的20个月海分布在中低纬度(33.7°S-32.8°N).基于我们之前对地球板块动力学的认识,对月表的线性构造及月海分布的动力学解释是:引潮力引起了月表南北向的挤压和东西向的拉张,产生了N-S方向的挤压性破裂和在NW-SE,NE-SW方向产生的剪切性质的破裂,且月球正面所受的引潮力比背面大,所以线性构造多位于月球正面.通过引潮位ψ=Gmr0∑nn=2(ar0)nPn(cosv)的分析,月球在公转过程中,中低纬度受到的引潮位更大,在引潮力-重力共同作用下,形成的月球正面不仅壳薄而且裂隙多,岩浆向月壳薄弱的地方喷涌,形成分布在月球正面中低纬度的月海.At present, there are few research of the linear structure on lunar surface, the cause of the lunar mare and the moon land distribution is unclear. ＂Chang＇ El＂ remote sensing detection shows that most of the linear structure on list are centralized on the positive moon facing the earth （48°W - 54°N）, according to the statistics, the strike of 86 linear structure on lunar surface are mainly N - S, NE - SW, NW - SE; 22 lunar mares making most of the moon are located on the positive moon, 20 of which are located in middle and low latitude area （33.7°S- 32.8°N）. Based on our previous understanding of the tectonic plates dynamics, the explanation of the linear structures and the distribution on lunar surface is： the tidal generation force caused the extrusion in north- south direction and of the tension in east-west direction, producing the N - S direction of rupture due to extrusion and the NW - SE, NE- SW direction of rupture due to shear properties, and the tidal generation force is greater on the positive moon than the back, so more linear structure appears on the positive moon. Through the analysis of the lead tide levels, the moon in the process of the revolution, which in middle and low latitude area the lead tide levels by bigger, under the-joint action of lead tide force-gravity, the positive moon has thin shell with fractures, with magma spewing to the weak shell zone, forming the distribution that lunar mares in the middle and low latitude on the positive moon.

关 键 词：月海 引潮力 引潮位 月球正面 

分 类 号：K903[历史地理—人文地理学]