云南地震与应力场的初步研究
A PRELIMINARY STUDY ON EARTHQUAKES AND STRESS FIELD IN YUNNAN
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摘要: 本文根据文献[1]提出的将有限元应用在研究地震方面的一种方法, 对云南七个大地震, 结合四级以上地震分布和应力场转变关系进行了探讨.计算说明地震活动性明显受区域应力场控制.从大地震迁移与应力场转变关系中对未来地震的三要素以及地震的孕育过程与前兆关系等问题进行了讨论, 给出初步计算结果.Abstract: In the light of [1], i.e. to apply the finite elements method to earthquake studies, this paper has to some extent gone into the relationships between the distribution of earthquakes and the change of the stress field as regard to 7 big earthquakes together with a number of smaller ones with magnitudes M 4 occurred in Yunnan. The results obtained from calculation clearly show that the seismicity was obviouly controlled by the regional stress field. By analysing the relationships between the migration of big earthquakes and the change of the stresa field, this paper has also dealt with the 3 principal parameters of future earthquakes, the relationship between the development of earthquake sources and their precursors, etc. preliminary results of the calculations are given.
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[1] 王仁等, 华北地区地震迁移规律的数学模拟, 地震学报, 2, 1, 1980.
[2] 殷有泉等, 非线性问题的有限单元法在工程地质中的应用, 地质科学, 3, 1979.
[3] 古登堡著, 王子昌译, 地球内部物理学, 科学出版社, 1965.
[4] R. M. Stesky, W. F. Brace, Friction in faulted Rock at high temperature and Pressure, Tectonophysics, 23, 177——203, 1974.
[5] 闲荣举等, 我国西南地区现代构造应力场与现代构造活动的探讨, 地球物理学报, 20, 2, 1977.
[6] 李坪等, 云南川西地区地震地质基本特征的探讨, 地质科学, 4, 1975.
[7] 巴特著, 许立达译, 地震学引论, 地震出版社, 1978.[1] 王仁等, 华北地区地震迁移规律的数学模拟, 地震学报, 2, 1, 1980.
[2] 殷有泉等, 非线性问题的有限单元法在工程地质中的应用, 地质科学, 3, 1979.
[3] 古登堡著, 王子昌译, 地球内部物理学, 科学出版社, 1965.
[4] R. M. Stesky, W. F. Brace, Friction in faulted Rock at high temperature and Pressure, Tectonophysics, 23, 177——203, 1974.
[5] 闲荣举等, 我国西南地区现代构造应力场与现代构造活动的探讨, 地球物理学报, 20, 2, 1977.
[6] 李坪等, 云南川西地区地震地质基本特征的探讨, 地质科学, 4, 1975.
[7] 巴特著, 许立达译, 地震学引论, 地震出版社, 1978.
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