月球Airy均衡状态与月壳厚度估计
发布时间：2018-12-09 21:11
【摘要】：月球水准面异常和表面地形变化是其内部密度不均匀和各个界面的起伏变化的体现,因此利用水准面和地形之比(geoid to topography ratio,GTR)可估计月球均衡和月壳厚度。本文基于月球重力场模型SGM100h和地形模型STM359_grid-02,经过去除表面玄武岩填充和深层异常质量影响,并结合理论Airy均衡模型中GTR与参考月壳厚度的关系,计算得到了新的月壳厚度模型。该模型的月壳平均厚度为36.9 km,背面比正面平均厚约13.5 km,Apollo12/14登陆点的月壳厚度分别是28.3 km和29.1 km。在各月海盆地存在着中央较薄、四周逐渐增厚的趋势。
[Abstract]:The anomaly of the lunar geoid and the topographic variation of the surface are the reflection of the uneven density and the fluctuation of each interface. Therefore, the lunar equalization and the thickness of the lunar shell can be estimated by using the ratio of the leveling surface to the topography (geoid to topography ratio,GTR). Based on lunar gravity field model SGM100h and terrain model STM359_grid-02, the influence of surface basalt filling and deep anomaly mass is removed, and the relationship between GTR and reference lunar shell thickness in theoretical Airy equilibrium model is combined. A new model of lunar shell thickness is obtained. The average thickness of the lunar shell in this model is 36.9 km, which is about 13.5 km,Apollo12/14 thicker than that of the front surface. The thickness of the lunar shell is 28.3 km and 29.1 km., respectively. There is a trend of thinness in the center and thickening around the Yuehai basin.
【作者单位】： 武汉大学测绘学院;武汉大学
【基金】：国家自然科学基金(40637034;41074014)
【分类号】：P184
本文编号：2370039
[Abstract]:The anomaly of the lunar geoid and the topographic variation of the surface are the reflection of the uneven density and the fluctuation of each interface. Therefore, the lunar equalization and the thickness of the lunar shell can be estimated by using the ratio of the leveling surface to the topography (geoid to topography ratio,GTR). Based on lunar gravity field model SGM100h and terrain model STM359_grid-02, the influence of surface basalt filling and deep anomaly mass is removed, and the relationship between GTR and reference lunar shell thickness in theoretical Airy equilibrium model is combined. A new model of lunar shell thickness is obtained. The average thickness of the lunar shell in this model is 36.9 km, which is about 13.5 km,Apollo12/14 thicker than that of the front surface. The thickness of the lunar shell is 28.3 km and 29.1 km., respectively. There is a trend of thinness in the center and thickening around the Yuehai basin.
【作者单位】： 武汉大学测绘学院;武汉大学
【基金】：国家自然科学基金(40637034;41074014)
【分类号】：P184
【二级参考文献】
相关期刊论文 前1条
1 赵双明;李德仁;;ADS40影像几何预处理[J];武汉大学学报(信息科学版);2006年04期
，本文编号：2370039
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