SOME PROBLEMS OF STATIC DEFORMATION OF THE EARTH
SOME PROBLEMS OF STATIC DEFORMATION OF THE EARTH
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DOI：
10.4294/jpe1952.22.123
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发表时间：
1974
期刊：
影响因子：
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通讯作者：
M. Saito
中科院分区：
文献类型：
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作者：
M. Saito
对重力弹性地球模型的静态变形进行了较详细的研究。我们发现，如果不考虑液心的应力-应变关系，问题就迎刃而解了。通过引入一个新变量，提出了一种不存在密度导数的简便公式。用该理论得到的静态解与不存在液芯的动态解进行了比较。它们之间的差异在0.2%以内。计算了地球自转引起的弹性变形和表面荷载引起的一阶模态变形。
The static deformation of gravitating elastic earth model is studied in some detail. It is found that the problem becomes well posed if we discard the stress-strain relation in the liquid core. A convenient formulation, in which derivative of density does not appear, is proposed in the liquid core by introducing a new variable. Static solutions obtained by the present theory are compared with dynamic solutions in which the liquid core causes no trouble. The differences between them are within 0.2%. The elastic deformation due to earth's rotation and the deformation of degree 1 modes induced by surface loads are also computed.