Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094515 |
Isotropic source components of events in the 2019 Ridgecrest, California, earthquake sequence | |
Yifang Cheng; Xin Wang; Zhongwen Zhan; Yehuda Ben-Zion | |
2021-09-13 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | We investigate the non-double-couple components of 224 M ≥ 3 earthquakes in the 2019 Mw7.1 Ridgecrest sequence, which occurred on a complex fault system in the Eastern California Shear Zone. Full moment tensors are derived using waveform data from near-fault and regional stations with a generalized cut-and-paste inversion and 3D velocity and attenuation models. The results show limited Compensated Linear Vector Dipole components, but considerable explosive isotropic components (5-15% of the total moments) for approximately 50 earthquakes. Most of these events occur between the Mw6.4 foreshock and one day after the Mw7.1 mainshock and are mainly distributed around the rupture ends and fault intersections. The percentage of isotropic components is reduced considerably when data recorded by near-fault stations are not included in the inversions, highlighting the importance of near-fault data. The results suggest that high-frequency damage-related radiation and other local dilatational processes are responsible for the observed isotropic source terms. |
领域 | 气候变化 |
URL | 查看原文 |
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/338752 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Yifang Cheng,Xin Wang,Zhongwen Zhan,et al. Isotropic source components of events in the 2019 Ridgecrest, California, earthquake sequence[J]. Geophysical Research Letters,2021. |
APA | Yifang Cheng,Xin Wang,Zhongwen Zhan,&Yehuda Ben-Zion.(2021).Isotropic source components of events in the 2019 Ridgecrest, California, earthquake sequence.Geophysical Research Letters. |
MLA | Yifang Cheng,et al."Isotropic source components of events in the 2019 Ridgecrest, California, earthquake sequence".Geophysical Research Letters (2021). |
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