Lunar Global Shape and Polar Topography Derived from Kaguya-LALT Laser Altimetry
Lunar Global Shape and Polar Topography Derived from Kaguya-LALT Laser Altimetry
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DOI：
10.1126/science.1164146
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发表时间：
2009-02
期刊：
影响因子：
56.9
通讯作者：
H. Araki;S. Tazawa;H. Noda;Y. Ishihara;S. Goossens;S. Sasaki;N. Kawano;I. Kamiya;H. Otake
中科院分区：
文献类型：
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作者：
H. Araki;S. Tazawa;H. Noda;Y. Ishihara;S. Goossens;S. Sasaki;N. Kawano;I. Kamiya;H. Otake
利用日本月球探测器Selenological and Engineering Explorer（SELENE或Kaguya）上的激光高度计（LALT）的数据得出了空间分辨率小于0.5度的全球月球地形图。与之前的统一月球控制网络（ULCN 2005）模型相比，新地图揭示了比几百公里更精细的无偏差月球地形。对月球、地球、火星和金星全球地形数据的球谐分析表明，均衡补偿是大尺度上普遍的岩石圈支撑机制。然而，对于较小的尺度，建议简单的刚性支撑在月球、金星和火星上占主导地位，这可能表明岩石圈比地球更干燥，特别是对于月球和金星。
A global lunar topographic map with a spatial resolution of finer than 0.5 degree has been derived using data from the laser altimeter (LALT) on board the Japanese lunar explorer Selenological and Engineering Explorer (SELENE or Kaguya). In comparison with the previous Unified Lunar Control Network (ULCN 2005) model, the new map reveals unbiased lunar topography for scales finer than a few hundred kilometers. Spherical harmonic analysis of global topographic data for the Moon, Earth, Mars, and Venus suggests that isostatic compensation is the prevailing lithospheric support mechanism at large scales. However, simple rigid support is suggested to dominate for the Moon, Venus, and Mars for smaller scales, which may indicate a drier lithosphere than on Earth, especially for the Moon and Venus.