Effect of the free surface on the earthquake energy: a case study of reverse faulting
文献类型：期刊论文
| 作者 | Li YanHeng1; Shi BaoPing1,2; Zhang Jian1 |
| 刊名 | Chinese science bulletin
 |
| 出版日期 | 2009-07-01 |
| 卷号 | 54期号:13页码:2271-2278 |
| 关键词 | Energy partitioning Representation theorem Thrust fault Apparent stress Response of surface |
| ISSN号 | 1001-6538 |
| DOI | 10.1007/s11434-009-0042-5 |
| 通讯作者 | Li yanheng(liyanh06b@mails.gucas.ac.cn) |
| 英文摘要 | Based on the representation theorem of seismic energy radiation, in this study, we have quantitatively investigated the effect of free surface on the radiation energy distribution due to a coupling interaction between free surface and near surface finite fault for the reverse earthquake faulting. corresponding to the finite faulting, a 2-d pseudostatic-reverse-fault-dislocation solution has been used in the calculation of the work done by the seismic response against free surface. the results indicate that, due to a strong coupling interaction between the free surface and near surface fault, the total radiated seismic energy e (r) is much larger than that radiated only from the fault itself (e (f)), especially for the shallow reverse faulting. in convention, e (f) is commonly used in the estimation of earthquake energy radiation. however, when the fault depth h, the distance between the free surface and top of fault location, increases, the effect of the coupling interaction between the fault and free surface decreases gradually. therefore, the total radiated energy e (r) approaches to the e (f) when the depth h is about 2 times the fault length i. the current study could provide us a partial explanation of the apparent stress discrepancy observed at the far field and near field in the recent large earthquake. moreover, the current study also has a significant implication of how to quantitatively describe the near fault strong ground motion and associated seismic hazard from the earthquake source energy point of view. |
| WOS关键词 | MODEL |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000267669100019 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2395285 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Li YanHeng |
| 作者单位 | 1.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 2.Chinese Earthquake Adm, Inst Crustal Dynam, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li YanHeng,Shi BaoPing,Zhang Jian. Effect of the free surface on the earthquake energy: a case study of reverse faulting[J]. Chinese science bulletin,2009,54(13):2271-2278. |
| APA | Li YanHeng,Shi BaoPing,&Zhang Jian.(2009).Effect of the free surface on the earthquake energy: a case study of reverse faulting.Chinese science bulletin,54(13),2271-2278. |
| MLA | Li YanHeng,et al."Effect of the free surface on the earthquake energy: a case study of reverse faulting".Chinese science bulletin 54.13(2009):2271-2278. |
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来源：中国科学院大学
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