Check of earth's free oscillations excited by sumatra-andaman large earthquake and discussions on the anisotropy of inner core
文献类型：期刊论文
| 作者 | Lei XiangE; Sun HePing; Hsu HouTse; Shi YaoLin |
| 刊名 | Science in china series d-earth sciences
 |
| 出版日期 | 2007-06-01 |
| 卷号 | 50期号:6页码:909-917 |
| 关键词 | Sumatra-andaman large earthquake Earth's free oscillations Superconducting gravimeter Abnormal spectral splitting Anisotropy of inner core |
| ISSN号 | 1006-9313 |
| DOI | 10.1007/s11430-007-0028-6 |
| 通讯作者 | Lei xiange(leixe@asch.whigg.ac.cn) |
| 英文摘要 | Sumatra-andaman large earthquake on dec. 26, 2004 generated not only the indian ocean tsunami but also the earth's free oscillations (efo). the signals of earth's free oscillations were perfectly recorded by the superconducting gravimeter c0-32 at wuhan station in china. after the pre-treatment and spectral analysis on the observational data from wuhan station, we obtained more than ninety efo modes including 42 fundamental modes, 2 radial modes and 49 harmonic modes. on the basis of the discussions on some observed harmonic modes and abnormal splitting phenomena, we considered that the real rigidity might be lower than the theoretical prediction of prem model in the inner core and however the anisotropy of compressive wave was brightly higher than the present estimations in the inner core. this suggested that the anisotropy of the inner core could be much more complicated than our present understanding, and there might be some new geophysical phenomena in the formation process of the inner core. |
| WOS关键词 | NORMAL-MODE ; SUPERCONDUCTING GRAVIMETER ; GRAVITY ; PRESSURE ; CONSTRAINTS |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000247829600010 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2381326 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Lei XiangE |
| 作者单位 | 1.Chinese Acad Sci, Inst Geodesy & Geophys, Key Lab Dynam Geodesy, Wuhan 430077, Peoples R China 2.Grad Univ, Chinese Acad Sci, Lab Computat Geodynam, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lei XiangE,Sun HePing,Hsu HouTse,et al. Check of earth's free oscillations excited by sumatra-andaman large earthquake and discussions on the anisotropy of inner core[J]. Science in china series d-earth sciences,2007,50(6):909-917. |
| APA | Lei XiangE,Sun HePing,Hsu HouTse,&Shi YaoLin.(2007).Check of earth's free oscillations excited by sumatra-andaman large earthquake and discussions on the anisotropy of inner core.Science in china series d-earth sciences,50(6),909-917. |
| MLA | Lei XiangE,et al."Check of earth's free oscillations excited by sumatra-andaman large earthquake and discussions on the anisotropy of inner core".Science in china series d-earth sciences 50.6(2007):909-917. |
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来源：中国科学院大学
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