Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092832 |
Supershear rupture, daughter cracks, and the definition of rupture velocity | |
Feng Hu; David D. Oglesby; Baoning Wu; Xiaofei Chen | |
2021-05-05 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Rupture velocity is a fundamental feature of earthquake behavior. How rupture velocity is defined can therefore affect our understanding of earthquake physics. Based on dynamic rupture simulations, we compare the tangent and average rupture velocities calculated via one‐ and two‐dimensional gradients. Two strike‐slip scenarios with free‐surface‐induced supershear ruptures are presented within a homogeneous and a depth‐dependent stress regime, respectively. Although both scenarios produce a daughter crack that propagate over the seismogenic depth, in the depth‐dependent case the 1D and 2D rupture velocities capture different features: A 1D horizontal gradient measurement implies a supershear rupture, while a 2D gradient measurement reveals sub‐Rayleigh rupture propagation everywhere except very close to the free surface. A large area on the fault with the 1D horizontal tangent rupture velocity does not necessarily produce an observable Mach front, which arises the importance of rupture velocity definitions in supershear analysis. |
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/325819 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Feng Hu,David D. Oglesby,Baoning Wu,et al. Supershear rupture, daughter cracks, and the definition of rupture velocity[J]. Geophysical Research Letters,2021. |
APA | Feng Hu,David D. Oglesby,Baoning Wu,&Xiaofei Chen.(2021).Supershear rupture, daughter cracks, and the definition of rupture velocity.Geophysical Research Letters. |
MLA | Feng Hu,et al."Supershear rupture, daughter cracks, and the definition of rupture velocity".Geophysical Research Letters (2021). |
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