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DOI | 10.1126/science.aan0760 |
Seismic evidence for partial melting at the root of major hot spot plumes | |
Yuan, Kaiqing1; Romanowicz, Barbara1,2,3 | |
2017-07-28 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 357期号:6349页码:393-396 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France |
英文摘要 | Ultralow-velocity zones are localized regions of extreme material properties detected seismologically at the base of Earth's mantle. Their nature and role in mantle dynamics are poorly understood. We used shear waves diffracted at the core-mantle boundary to illuminate the root of the Iceland plume from different directions. Through waveform modeling, we detected a large ultralow-velocity zone and constrained its shape to be axisymmetric to a very good first order. We thus attribute it to partial melting of a locally thickened, denser- and hotter-than-average layer, reflecting dynamics and elevated temperatures within the plume root. Such structures are few and far apart, and they may be characteristic of the roots of some of the broad mantle plumes tomographically imaged within the large low-shear-velocity provinces in the lower mantle. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406362300043 |
WOS关键词 | CORE-MANTLE BOUNDARY ; EARTHS LOWERMOST MANTLE ; ULTRALOW-VELOCITY ZONES ; BASE ; HOTSPOTS ; PACIFIC ; LAYER ; HETEROGENEITY ; SUPERPLUMES ; CONSTRAINTS |
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/196554 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Berkeley Seismol Lab, Berkeley, CA 94720 USA; 2.Coll France, Paris, France; 3.Inst Phys Globe, Paris, France |
推荐引用方式 GB/T 7714 | Yuan, Kaiqing,Romanowicz, Barbara. Seismic evidence for partial melting at the root of major hot spot plumes[J]. SCIENCE,2017,357(6349):393-396. |
APA | Yuan, Kaiqing,&Romanowicz, Barbara.(2017).Seismic evidence for partial melting at the root of major hot spot plumes.SCIENCE,357(6349),393-396. |
MLA | Yuan, Kaiqing,et al."Seismic evidence for partial melting at the root of major hot spot plumes".SCIENCE 357.6349(2017):393-396. |
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