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DOI | 10.1038/s41467-018-05180-x |
Transient rheology of the Sumatran mantle wedge revealed by a decade of great earthquakes | |
Qiu, Qiang1,2; Moore, James D. P.1; Barbot, Sylvain1,2; Feng, Lujia1; Hill, Emma M.1,2 | |
2018-03-08 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2018 |
卷号 | 9 |
文章类型 | Article |
语种 | 英语 |
国家 | Singapore |
英文摘要 | Understanding the rheological properties of the upper mantle is essential to develop a consistent model of mantle dynamics and plate tectonics. However, the spatial distribution and temporal evolution of these properties remain unclear. Here, we infer the rheological properties of the asthenosphere across multiple great megathrust earthquakes between 2004 and 2014 along the Sumatran subduction zone, taking advantage of decade-long continuous GPS and tide-gauge measurements. We observe transient mantle wedge flow following these earthquakes, and infer the temporal evolution of the effective viscosity. We show that the evolution of stress and strain rate following these earthquakes is better matched by a bi-viscous than by a power-law rheology model, and we estimate laterally heterogeneous transient and background viscosities on the order of similar to 10(17) and similar to 10(19) Pa s, respectively. Our results constitute a preliminary rheological model to explain stress evolution within earthquake cycles and the development of seismic hazard in the region. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000427007700004 |
WOS关键词 | VERTICAL CRUSTAL MOTION ; SEA-LEVEL RISE ; VISCOELASTIC RELAXATION ; POSTSEISMIC RELAXATION ; ANDAMAN EARTHQUAKE ; TIDE-GAUGE ; SATELLITE ALTIMETRY ; GPS OBSERVATIONS ; LAND SUBSIDENCE ; COSEISMIC SLIP |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/203876 |
专题 | 资源环境科学 |
作者单位 | 1.Nanyang Technol Univ, Earth Observ Singapore, Singapore 639798, Singapore; 2.Nanyang Technol Univ, Asian Sch Environm, Singapore 639798, Singapore |
推荐引用方式 GB/T 7714 | Qiu, Qiang,Moore, James D. P.,Barbot, Sylvain,et al. Transient rheology of the Sumatran mantle wedge revealed by a decade of great earthquakes[J]. NATURE COMMUNICATIONS,2018,9. |
APA | Qiu, Qiang,Moore, James D. P.,Barbot, Sylvain,Feng, Lujia,&Hill, Emma M..(2018).Transient rheology of the Sumatran mantle wedge revealed by a decade of great earthquakes.NATURE COMMUNICATIONS,9. |
MLA | Qiu, Qiang,et al."Transient rheology of the Sumatran mantle wedge revealed by a decade of great earthquakes".NATURE COMMUNICATIONS 9(2018). |
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