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DOI | 10.1029/2020GL089882 |
The role of fluid‐related heterogeneous structures in controlling the fault slip behavior in the slow‐earthquake source region along the Nankai subduction zone, southwest Japan | |
Eiji Kurashimo; Takaya Iwasaki; Noriko Tsumura; Takashi Iidaka | |
2021-01-19 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | A seismic array observation across the slow‐earthquake source region in the eastern Kii Peninsula, southwest Japan, reveal the detailed structure and seismicity along the upper boundary of the subducted Philippine Sea Plate. Tomography analysis and earthquake reflection imaging clarify the geometry of the upper boundary of the Philippine Sea Plate with a subduction angle of ∼ 15° at a depth range of 22 – 30 km. We observe intraslab low‐frequency earthquakes (LFEs) in and around the low‐Vp and high‐Vp/Vs zones, which are located above the intraslab earthquakes that are controlled by the dehydration embrittlement of serpentine. The intraslab LFE activity may be related to fluid movement. Fluids, which are derived from both dehydration of the serpentinized oceanic mantle and crustal eclogitization, may control the fault slip behavior. Therefore, the fluid behavior around the subducting plate boundary has an important role in controlling the downdip limit of the seismogenic zone. |
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/313690 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Eiji Kurashimo,Takaya Iwasaki,Noriko Tsumura,等. The role of fluid‐related heterogeneous structures in controlling the fault slip behavior in the slow‐earthquake source region along the Nankai subduction zone, southwest Japan[J]. Geophysical Research Letters,2021. |
APA | Eiji Kurashimo,Takaya Iwasaki,Noriko Tsumura,&Takashi Iidaka.(2021).The role of fluid‐related heterogeneous structures in controlling the fault slip behavior in the slow‐earthquake source region along the Nankai subduction zone, southwest Japan.Geophysical Research Letters. |
MLA | Eiji Kurashimo,et al."The role of fluid‐related heterogeneous structures in controlling the fault slip behavior in the slow‐earthquake source region along the Nankai subduction zone, southwest Japan".Geophysical Research Letters (2021). |
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