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DOI | 10.1029/2020GL089271 |
The 2018 MW 7.5 Papua New Guinea earthquake: A dissipative and cascading rupture process | |
Xu Zhang; Wanpeng Feng; Hailin Du; Lu Li; Shuai Wang; Lei Yi; Yongzhe Wang | |
2020-09-02 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | The 2018 MW 7.5 Papua New Guinea earthquake is the largest earthquake instrumentally recorded in the Papuan Fold Belt since 1900. Based on a combined analysis of back‐projection imaging and finite‐fault joint inversion, we determined a complex spatio‐temporal rupture model of the mainshock. During the rupture process, three major asperities were ruptured successively with relatively low rupture velocities ranging from 1.9 km/s to 2.3 km/s. The spatio‐temporal evolution of the imparted Coulomb stress indicates that the rupture of the preceding asperity played an important role in triggering the delayed rupture of the adjacent asperity. Based on our rupture model, the upper bound of the radiation efficiency of this event is estimated to be 9.7‐12.3%, a relatively low value, indicating that this earthquake is extremely dissipative. The high energy dissipation implies that the 2018 MW 7.5 Papua New Guinea earthquake may be controlled by the immature seismogenic environment. |
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/293074 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Xu Zhang,Wanpeng Feng,Hailin Du,et al. The 2018 MW 7.5 Papua New Guinea earthquake: A dissipative and cascading rupture process[J]. Geophysical Research Letters,2020. |
APA | Xu Zhang.,Wanpeng Feng.,Hailin Du.,Lu Li.,Shuai Wang.,...&Yongzhe Wang.(2020).The 2018 MW 7.5 Papua New Guinea earthquake: A dissipative and cascading rupture process.Geophysical Research Letters. |
MLA | Xu Zhang,et al."The 2018 MW 7.5 Papua New Guinea earthquake: A dissipative and cascading rupture process".Geophysical Research Letters (2020). |
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