Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL078793 |
From Slab Coupling to Slab Pull: Stress Segmentation in the Subducting Nazca Plate | |
Bloch, Wasja1,2; Schurr, Bernd2; Kummerow, Joern1; Salazar, Pablo3,4; Shapiro, Serge A.1 | |
2018-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:11页码:5407-5416 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Chile |
英文摘要 | We investigate the stress field that the Nazca slab experiences during subduction beneath the South American plate by determining the focal mechanisms of moderate subduction-related earthquakes continuously from 20- to 120-km depth and inverting for the stress directions of four slab regions. Our results show the sharp termination of the coupling zone, which is characterized by compressional stresses, uplift of the overlying mountain range, and likely the activation of preexisting slab structures. Beyond and below this zone slab pull is the dominant stress. Near the slab surface, we also find signatures of the activation of inherited structures. Deeper in the slab, fault orientations are more likely controlled by the stress field alone. Along the subduction pathway, we find indication for an increase of the absolute slab pull component of the stress field that correlates with an increase in event rate and the occurrence possibility of M > 7 intermediate depth earthquakes. |
英文关键词 | seismology subduction stress slab pull plate coupling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000436249900022 |
WOS关键词 | DOUBLE SEISMIC ZONE ; EARTHQUAKE FOCAL MECHANISMS ; 2014 IQUIQUE EARTHQUAKE ; NORTHERN CHILE ; SERPENTINE DEHYDRATION ; NORTHEASTERN JAPAN ; OCEANIC MANTLE ; PACIFIC PLATE ; CENTRAL ANDES ; SCOTTS-MILLS |
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/26335 |
专题 | 气候变化 |
作者单位 | 1.Free Univ Berlin, Inst Geol Wissensch, Berlin, Germany; 2.Deutsch GeoForsch Zentrum Potsdam, Potsdam, Germany; 3.Univ Catolica Norte, Dept Ciencias Geol, Antofagasta, Chile; 4.Natl Res Ctr Integrated Nat Disasters Management, Santiago, Chile |
推荐引用方式 GB/T 7714 | Bloch, Wasja,Schurr, Bernd,Kummerow, Joern,et al. From Slab Coupling to Slab Pull: Stress Segmentation in the Subducting Nazca Plate[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(11):5407-5416. |
APA | Bloch, Wasja,Schurr, Bernd,Kummerow, Joern,Salazar, Pablo,&Shapiro, Serge A..(2018).From Slab Coupling to Slab Pull: Stress Segmentation in the Subducting Nazca Plate.GEOPHYSICAL RESEARCH LETTERS,45(11),5407-5416. |
MLA | Bloch, Wasja,et al."From Slab Coupling to Slab Pull: Stress Segmentation in the Subducting Nazca Plate".GEOPHYSICAL RESEARCH LETTERS 45.11(2018):5407-5416. |
条目包含的文件 | 条目无相关文件。 |
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