DEEP LUNAR INTERIOR INFERRED FROM RECENT SEISMIC DATA

被引：129

作者：

Nakamura, Yosio ^{[1
]}

Latham, Gary ^{[1
]}

Lammlein, David ^{[1
]}

Ewing, Maurice ^{[1
]}

Duennebier, Frederick ^{[1
]}

Dorman, James ^{[1
]}

机构：

[1] Univ Texas Med Branch, Inst Marine Biomed, Earth & Planetary Sci Div, Galveston, TX 77550 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 1974年 / 1卷 / 03期

关键词：

D O I：

10.1029/GL001i003p00137

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Analysis of recent lunar seismic data from distant meteoroid impacts, high-frequency teleseismic events and deep moon-quakes shows several significant deviations of P- and S-wave travel times from those expected if the lunar interior were homogeneous below the crust. These data are interpreted resulting in a lunar model consisting of at least four and possibly five distinguishable zones: (I) the 50 to 60 km thick crust characterized by seismic velocities appropriate for plagio-clase-rich materials, (II) the 250 km thick upper mantle characterized by seismic velocities consistent with an olivine-pyroxene composition, (III) the 500 km thick middle mantle characterized by a high (0.33 - 0.36) Poisson's ratio, (IV) the lower mantle characterized by high shear-wave attenuation and possibly (V) a core of radius between 170 and 360 km characterized by a greatly reduced compressional wave velocity.

引用

页码：137 / 140

页数：4

共 12 条

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