A study on inner core boundary properties of East China using pre-critical PcP-PKiKP data
文献类型：期刊论文
| 作者 | Shen Zhong-Yin1,2; Ai Yin-Shuang1; He Yu-Mei1; Jiang Ming-Ming1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2013-10-01 |
| 卷号 | 56期号:10页码:3324-3333 |
| 关键词 | Earth's inner core Inner core boundary PKiKP PcP Travel time residue Amplitude ratio |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg20131009 |
| 文献子类 | Article |
| 英文摘要 | Reflected from inner core boundary, pre-critical PKiKP, associated with core-mantle boundary reflection phase PcP to suppress signal of non-inner-core origin, can provide the most direct and concise high-resolution constraint on properties of inner core boundary. Out of one-year data collected by dense portable array located on the northwestern brink of North China Craton, we get 73 pairs of PcP-PKiKP waveforms from 8 earthquake events, covering a sweep from Korean Peninsula to Northeast and Central China. Travel time residue and amplitude ratio observations have been systematically analyzed, with the following conclusions obtained: (1) Dense array could be used as a powerful tool for detecting pre-critical PKiKP and shallow-origin events can also provide good observation data. (2) Geographical distribution of travel time residues show an abrupt change into negative anomaly (>0. 5 s within 70 km distance on ICB) from northwest to southeast,indicating the undulation of inner core boundary of the studying area no larger than 3 km. (3) Relative amplitude ratios show a systematically southeastern increasing of inner core boundary density contrast, implicating small-scale perturbation of inner core crystallization environment. |
| WOS关键词 | TRAVEL-TIMES ; SEISMOLOGICAL EVIDENCE ; LOPSIDED GROWTH ; OUTER CORE ; ANISOTROPY ; CONSTRAINTS ; DENSITY ; SURFACE ; LENGTH ; NOISE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000326848400009 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/86588]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Shen Zhong-Yin |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earths Deep Interior, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen Zhong-Yin,Ai Yin-Shuang,He Yu-Mei,et al. A study on inner core boundary properties of East China using pre-critical PcP-PKiKP data[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2013,56(10):3324-3333. |
| APA | Shen Zhong-Yin,Ai Yin-Shuang,He Yu-Mei,&Jiang Ming-Ming.(2013).A study on inner core boundary properties of East China using pre-critical PcP-PKiKP data.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,56(10),3324-3333. |
| MLA | Shen Zhong-Yin,et al."A study on inner core boundary properties of East China using pre-critical PcP-PKiKP data".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 56.10(2013):3324-3333. |
入库方式： OAI收割
来源：地质与地球物理研究所
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