| 地球自转速率变化引起的全球应力场 |
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| 引用本文： | 王连捷,张利容,王薇,袁嘉音.地球自转速率变化引起的全球应力场[J].地质力学学报,1997,3(3):12-20. |
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| 作者姓名： | 王连捷 张利容 王薇 袁嘉音 |
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| 作者单位： | 中国地质科学院地质力学研究所,中国地质科学院地质力学研究所,中国地质科学院地质力学研究所,中国地质科学院地质力学研究所 |
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| 基金项目： | 地质力学开放研究实验室资助 |
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| 摘 要： | 本文用有限元方法计算了地球自转变化引起全球应力，包括离心惯性力和纬向惯性力引起的应力。离心惯性力变化引起的应力其主方向为ＳＮ向和ＥＷ向，应力的大小随着地球自转角速度的持增加而积累，其量级可能达到几十到几在几百兆帕或更中惯性力引起民的应力，在均匀地球的情况下，主应力方向为ＮＥ向和ＮＷ向。在地壳厚度按一定规律分布时，应力场的分布沿ＥＷ方向具有分带性，并且与全球厌差点脊的分布有对应关系，但应幅度很小。
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| 关 键 词： | 地球自转速率 应力场 地壳运动 |
| 收稿时间： | 1997/4/7 0:00:00 |
GLOBAL STRESS FIELD CAUSED BY THE CHANGE OF RATE OF THE EARTH'S ROTATION |
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| Wang Lianjie,Zhang Lirong,Wang Wei and Yuan Jiayin.GLOBAL STRESS FIELD CAUSED BY THE CHANGE OF RATE OF THE EARTH''S ROTATION[J].Journal of Geomechanics,1997,3(3):12-20. |
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| Authors: | Wang Lianjie Zhang Lirong Wang Wei and Yuan Jiayin |
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| Institution: | Institute of Geomechanics, CAGS,Institute of Geomechanics, CAGS,Institute of Geomechanics, CAGS and Institute of Geomechanics, CAGS |
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| Abstract: | In this paper,a global stress field caused by the change of rate of the earth''s rotation is calculated using finite element method.The principal stress resulting from the change of centrifugal inertial force is South-North and East-West oriented,and the magnitude of the stress may reach to tens to several hundreds MPa.The principal stress caused by latitudinal inertial force for a homogeneous earth is Northeast and Northwest oriented.With a varying crustal thickness along the longitude,there will be a zoning of the stress field caused by latitudinal inertial force with the resulting 4 tension zones corresponding to the locations of the present 4 Mid oceanic ridges. |
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| Keywords: | rate of earth''s rotation stress field |
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