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DOI | 10.1002/2017GL074776 |
Slow slip events and the 2016 Te Araroa M-w 7.1 earthquake interaction: Northern Hikurangi subduction, New Zealand | |
Koulali, A.1; 39;Anastasio, E.2 | |
2017-08-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:16 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; New Zealand; USA; Chile |
英文摘要 | Following a sequence of three Slow Slip Events (SSEs) on the northern Hikurangi Margin, between June 2015 and August 2016, a M-w 7.1 earthquake struck similar to 30km offshore of the East Cape region in the North Island of New Zealand on the 2 September 2016 (NZ local time). The earthquake was also followed by a transient deformation event (SSE or afterslip) northeast of the North Island, closer to the earthquake source area. We use data from New Zealand's continuous Global Positioning System networks to invert for the SSE slip distribution and evolution on the Hikurangi subduction interface. Our slip inversion results show an increasing amplitude of the slow slip toward the Te Araroa earthquake foreshock and main shock area, suggesting a possible triggering of the M-w 7.1 earthquake by the later stage of the slow slip sequence. We also show that the transient deformation following the Te Araroa earthquake ruptured a portion of the Hikurangi Trench northeast of the North Island, farther north than any previously observed Hikurangi margin SSEs. Our slip inversion and the coulomb stress calculation suggest that this transient may have been induced as a response to the increase in the static coulomb stress change downdip of the rupture plane on the megathrust. These observations show the importance of considering the interaction between slow slip events, seismic, and aseismic events, not only on the same megathrust interface but also on faults within the surrounding crust. |
英文关键词 | slow slip events earthquake GPS |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410658800030 |
WOS关键词 | ZONE ; INTERFACE ; TREMOR ; SEISMICITY ; NUCLEATION ; PENINSULA ; INVERSION ; RUPTURE ; PHASE |
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/27411 |
专题 | 气候变化 |
作者单位 | 1.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia; 2.GNS Sci, Lower Hutt, New Zealand; 3.Univ Texas Austin, Inst Geophys, Austin, TX USA; 4.Natl Res Ctr Integrated Nat Disaster Management, Santiago, Chile |
推荐引用方式 GB/T 7714 | Koulali, A.,39;Anastasio, E.. Slow slip events and the 2016 Te Araroa M-w 7.1 earthquake interaction: Northern Hikurangi subduction, New Zealand[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(16). |
APA | Koulali, A.,&39;Anastasio, E..(2017).Slow slip events and the 2016 Te Araroa M-w 7.1 earthquake interaction: Northern Hikurangi subduction, New Zealand.GEOPHYSICAL RESEARCH LETTERS,44(16). |
MLA | Koulali, A.,et al."Slow slip events and the 2016 Te Araroa M-w 7.1 earthquake interaction: Northern Hikurangi subduction, New Zealand".GEOPHYSICAL RESEARCH LETTERS 44.16(2017). |
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