【摘要】：月球水準(zhǔn)面異常和表面地形變化是其內(nèi)部密度不均勻和各個(gè)界面的起伏變化的體現(xiàn),因此利用水準(zhǔn)面和地形之比(geoid to topography ratio,GTR)可估計(jì)月球均衡和月殼厚度。本文基于月球重力場(chǎng)模型SGM100h和地形模型STM359_grid-02,經(jīng)過(guò)去除表面玄武巖填充和深層異常質(zhì)量影響,并結(jié)合理論Airy均衡模型中GTR與參考月殼厚度的關(guān)系,計(jì)算得到了新的月殼厚度模型。該模型的月殼平均厚度為36.9 km,背面比正面平均厚約13.5 km,Apollo12/14登陸點(diǎn)的月殼厚度分別是28.3 km和29.1 km。在各月海盆地存在著中央較薄、四周逐漸增厚的趨勢(shì)。
[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.
【作者單位】： 武漢大學(xué)測(cè)繪學(xué)院;武漢大學(xué)
【基金】：國(guó)家自然科學(xué)基金(40637034;41074014)
【分類號(hào)】：P184

【二級(jí)參考文獻(xiàn)】

相關(guān)期刊論文 前1條

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本文編號(hào)：2370039