| STRESS AND DEFORMATION FIELDS ABOUT A LOCKED FAULT IN DEPTH |
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| 引用本文： | 杨修信,陈沅俊. STRESS AND DEFORMATION FIELDS ABOUT A LOCKED FAULT IN DEPTH[J]. 中国科学B辑(英文版), 1990, 0(6) |
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| 作者姓名： | 杨修信 陈沅俊 |
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| 作者单位： | Institute of Crustal Dynamics，State Seismological Bureau，Beijing 100085，PRC，Institute of Crustal Dynamics，State Seismological Bureau，Beijing 100085，PRC |
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| 摘 要： | In this paper the stress and deformation fields about a locked fault in depth have been imitated using 3-dimensional finite element method and their time-space variation features have been analysed. The authors consider tentatively that the horizontal stresses about an active fault decrease slightly near the fault. The distributions of stress increasing and decreasing regions due to the locking of a fault are skew-symmetrical about the fault. The stresses about the locked region are increased in a larger range, where great elastic strain energy is accumulated and a stronger earthquake is more easily developed than at the ends of the fault. Reverse variations of crustal stress and deformation may be related to the different stages of the seismogeny of an earthquake focus.
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STRESS AND DEFORMATION FIELDS ABOUT A LOCKED FAULT IN DEPTH |
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| YANG XIU-XIN AND CHEN YUAN-JUN. STRESS AND DEFORMATION FIELDS ABOUT A LOCKED FAULT IN DEPTH[J]. Science in China(Chemistry), 1990, 0(6) |
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| Authors: | YANG XIU-XIN AND CHEN YUAN-JUN |
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| Abstract: | In this paper the stress and deformation fields about a locked fault in depth have been imitated using 3-dimensional finite element method and their time-space variation features have been analysed. The authors consider tentatively that the horizontal stresses about an active fault decrease slightly near the fault. The distributions of stress increasing and decreasing regions due to the locking of a fault are skew-symmetrical about the fault. The stresses about the locked region are increased in a larger range, where great elastic strain energy is accumulated and a stronger earthquake is more easily developed than at the ends of the fault. Reverse variations of crustal stress and deformation may be related to the different stages of the seismogeny of an earthquake focus. |
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| Keywords: | locked fault in depth stress field deformation field. |
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