Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-018-0099-3 |
Migrating pattern of deformation prior to the Tohoku-Oki earthquake revealed by GRACE data | |
Panet, Isabelle1; Bonvalot, Sylvain2; Narteau, Clement3; Remy, Dominique2; Lemoine, Jean-Michel4 | |
2018-05-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:5页码:367-373 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | Understanding how and when far-field continuous motions lead to giant subduction earthquakes remains a challenge. An important limitation comes from an incomplete description of aseismic mass fluxes at depth along plate boundaries. Here we analyse Earth's gravity field variations derived from GRACE satellite data in a wide space-time domain surrounding the M-w 9.0 2011 Tohoku-Oki earthquake. We show that this earthquake is the extreme expression of initially silent deformation migrating from depth to the surface across the entire subduction system. Our analysis indeed reveals large-scale gravity and mass changes throughout three tectonic plates and connected slabs, starting a few months before March 2011. Before the Tohoku-Oki earthquake rupture, the gravity variations can be explained by aseismic extension of the Pacific plate slab at mid-upper mantle depth, concomitant with increasing seismicity in the shallower slab. For more than two years after the rupture, the deformation propagated far into the Pacific and Philippine Sea plate interiors, suggesting that subduction accelerated along 2,000 km of the plate boundaries in March 2011. This gravitational image of the earthquake's long-term dynamics provides unique information on deep and crustal processes over intermediate timescales, which could be used in seismic hazard assessment. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000431168900021 |
WOS关键词 | SUMATRA-ANDAMAN EARTHQUAKE ; VISCOELASTIC RELAXATION ; SUBDUCTION PROCESS ; GRAVITY CHANGE ; SLIP EVENT ; JAPAN ; SLAB ; LITHOSPHERE ; BOUNDARIES ; TECTONICS |
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/35119 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Paris Diderot, Sorbonne Paris Cite, ENSG, LASTIG LAREG,IGN, Paris, France; 2.Univ Toulouse, UMR 5563, GET, IRD,CNES,CNRS, Toulouse, France; 3.Univ Paris Diderot, UMR 7154, CNRS, Sorbonne Paris Cite,Inst Phys Globe Paris, Paris, France; 4.Univ Toulouse, CNES, UMR 5563, GET,CNRS,IRD, Toulouse, France |
推荐引用方式 GB/T 7714 | Panet, Isabelle,Bonvalot, Sylvain,Narteau, Clement,et al. Migrating pattern of deformation prior to the Tohoku-Oki earthquake revealed by GRACE data[J]. NATURE GEOSCIENCE,2018,11(5):367-373. |
APA | Panet, Isabelle,Bonvalot, Sylvain,Narteau, Clement,Remy, Dominique,&Lemoine, Jean-Michel.(2018).Migrating pattern of deformation prior to the Tohoku-Oki earthquake revealed by GRACE data.NATURE GEOSCIENCE,11(5),367-373. |
MLA | Panet, Isabelle,et al."Migrating pattern of deformation prior to the Tohoku-Oki earthquake revealed by GRACE data".NATURE GEOSCIENCE 11.5(2018):367-373. |
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