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DOI | 10.1029/2019GL086055 |
Stress Drop Variation of Deep-Focus Earthquakes Based on Empirical Green's Functions | |
Liu, Meichen; Huang, Yihe; Ritsema, Jeroen | |
2020-05-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We analyze source characteristics of global, deep-focus (>350 km) earthquakes with moment magnitudes (Mw) larger than 6.0-8.2 using teleseismic P-wave and S-wave spectra and an empirical Green's functions approach. We estimate the corner frequency assuming Brune's source model and calculate stress drops assuming a circular crack model. Based on P-wave and S-wave spectra, the one standard deviation ranges are 3.5-369.8 and 8.2-328.9 MPa, respectively. Based on the P-wave analysis, the median of our stress drop estimates is about a factor of 10 higher than the median stress drop of shallow earthquakes with the same magnitude estimated by Allmann and Shearer (2009, ). This suggests that, on average, the shear stress of deep faults in the mantle transition zone is an order of magnitude higher than the shear stress of faults in the crust. The wide range of stress drops implies coexistence of multiple physical mechanisms. |
英文关键词 | stress drop deep-focus earthquakes corner frequency |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000536639500031 |
WOS关键词 | RUPTURE ; MECHANISM ; SPECTRA ; BOLIVIA ; TRANSFORMATION ; INTERMEDIATE ; MODELS ; FAULTS ; WAVES ; SLABS |
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/279891 |
专题 | 气候变化 |
作者单位 | Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA |
推荐引用方式 GB/T 7714 | Liu, Meichen,Huang, Yihe,Ritsema, Jeroen. Stress Drop Variation of Deep-Focus Earthquakes Based on Empirical Green's Functions[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(9). |
APA | Liu, Meichen,Huang, Yihe,&Ritsema, Jeroen.(2020).Stress Drop Variation of Deep-Focus Earthquakes Based on Empirical Green's Functions.GEOPHYSICAL RESEARCH LETTERS,47(9). |
MLA | Liu, Meichen,et al."Stress Drop Variation of Deep-Focus Earthquakes Based on Empirical Green's Functions".GEOPHYSICAL RESEARCH LETTERS 47.9(2020). |
条目包含的文件 | 条目无相关文件。 |
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