| The time reversal effect of the impulse response of crust |
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| 引用本文： | 郑文衡,王乘,陈湘鹏. The time reversal effect of the impulse response of crust[J]. 地震学报(英文版), 2001, 14(4): 394-403. DOI: 10.1007/s11589-001-0117-0 |
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| 作者姓名： | 郑文衡 王乘 陈湘鹏 |
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| 作者单位： | ZHENG Wen-heng WANG Cheng CHEN Xiang-peng Engineering Computation and Simulation Institute，Huazhong University of Science & Technology，Wuhan 430074，China |
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| 基金项目： | State Natural Science Foundation (49834002) and the science foundation of HUST (J151005). |
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| 摘 要： | IntroductionTime reversal effect is a kind of reversed dynamic process in a limited space or time interval, which can be realized artificially by resetting the boundary and loading conditions. In this case the time seems to be reversed and such effect therefore is called time reversal effect, which was first proposed in and applied to the field of ultrasonic. Although the focusing of ultrasonic wave has powerful effect, it is difficult to focus in an anisotropic or homogeneous medium. Fink (19…
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| 收稿时间： | 2000-08-26 |
| 修稿时间： | 2001-06-11 |
The time reversal effect of the impulse response of crust |
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| ZHENG Wen-heng,WANG Cheng,CHEN Xiang-peng. The time reversal effect of the impulse response of crust[J]. Acta Seismologica Sinica(English Edition), 2001, 14(4): 394-403. DOI: 10.1007/s11589-001-0117-0 |
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| Authors: | ZHENG Wen-heng WANG Cheng CHEN Xiang-peng |
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| Affiliation: | Engineering Computation and Simulation Institute, Huazhong University of Science Technology, |
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| Abstract: | In this paper, the time reversal processes of impulse response of crust are simulated by means of a dynamical finite element method (DFEM). The results indicate that a small undulating load during a long period may cause a focused brevity impact in a chaos-response system. The physical principle for this phenomenon is that the wave interferes or multiples superposition. Based on this knowledge, a new view toward the mechanism for preparing and triggering an earthquake is proposed. Finally, an interpretation of crust response to the sea tides is given. |
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| Keywords: | time reversal impulse response earthquake dynamics simulation |
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