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DOI | 10.1002/2017GL075447 |
Seismic Velocity Changes in the Backarc Continental Crust After the 2011 M-w 9.0 Tohoku-Oki Megathrust Earthquake | |
Hong, Tae-Kyung; Lee, Junhyung; Chi, Donggeun; Park, Seongjun | |
2017-11-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:21 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | The 2011 M-w 9.0 Tohoku-Oki megathrust earthquake accompanied coseismic and postseismic displacements around the eastern Eurasian continental plate. Noise cross correlations produced transient seismic waveforms along interstation paths in the Korean Peninsula. We measured the traveltime changes of the fundamental mode Rayleigh waves over the range of 0.03-0.08Hz after the megathrust earthquake. The temporal seismic velocity changes in the lower crust were assessed from the traveltime changes. The traveltimes increased instantly after the megathrust earthquake and were gradually recovered over several hundreds to thousands of days. The instant shear wave velocity decreases ranged between 0.731 (+/- 0.057)% and 4.068 (+/- 0.173)%. The temporal medium perturbation might be caused by the transient uniaxial tensional stress due to the coseismic and postseismic displacements. The medium properties may be recovered by progressive stress field reconstruction. |
英文关键词 | seismic velocity backarc crust megathrust earthquake medium perturbation Korean Peninsula |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418572900002 |
WOS关键词 | TEMPORAL-CHANGES ; BRITTLE DEFORMATION ; KOREAN PENINSULA ; NOISE ; ROCKS ; DAMAGE ; TOMOGRAPHY ; RELAXATION ; PRESSURE ; RECOVERY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27182 |
专题 | 气候变化 |
作者单位 | Yonsei Univ, Dept Earth Syst Sci, Seoul, South Korea |
推荐引用方式 GB/T 7714 | Hong, Tae-Kyung,Lee, Junhyung,Chi, Donggeun,et al. Seismic Velocity Changes in the Backarc Continental Crust After the 2011 M-w 9.0 Tohoku-Oki Megathrust Earthquake[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(21). |
APA | Hong, Tae-Kyung,Lee, Junhyung,Chi, Donggeun,&Park, Seongjun.(2017).Seismic Velocity Changes in the Backarc Continental Crust After the 2011 M-w 9.0 Tohoku-Oki Megathrust Earthquake.GEOPHYSICAL RESEARCH LETTERS,44(21). |
MLA | Hong, Tae-Kyung,et al."Seismic Velocity Changes in the Backarc Continental Crust After the 2011 M-w 9.0 Tohoku-Oki Megathrust Earthquake".GEOPHYSICAL RESEARCH LETTERS 44.21(2017). |
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