Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073751 |
Attenuation tomography of the upper mantle | |
Adenis, Alice; Debayle, Eric; Ricard, Yanick | |
2017-08-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:15 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | We present QsADR17, a global shear wave attenuation model of the upper mantle. Synthetic tests confirm that large-scale shear attenuation anomalies are resolved in the whole upper mantle with limited vertical smearing (<= 50 km). QsADR17 shows strong correlation with surface tectonics down to 200 km depth, with low attenuation beneath continents and high attenuation beneath oceans. The attenuation signal near 250 km depth is dominated by a high-quality factor along subduction zones. Attenuating anomalies are found beneath mid-ocean ridges down to 150 km and under most Pacific hot spots from the lithosphere down to the transition zone. The presence of broad attenuating anomalies at 150 km depth in the Pacific Ocean suggests that several thermal plumes pond in the asthenosphere. Evidence for compositional heterogeneities is found in the lithosphere at the base of cratons and in a number of active regions. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408379000018 |
WOS关键词 | RAYLEIGH-WAVE ATTENUATION ; AZIMUTHAL ANISOTROPY ; SEISMIC ATTENUATION ; MODEL ; ANOMALIES ; AMPLITUDE ; ASTHENOSPHERE ; ANELASTICITY ; CONSTRAINTS ; VELOCITY |
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/27675 |
专题 | 气候变化 |
作者单位 | Univ Claude Bernard Lyon 1, Ecole Normale Super Lyon, CNRS, Lab Geol Lyon Terre Planetes Environm,UMR 5276, 2 Rue Raphael Dubois, Villeurbanne, France |
推荐引用方式 GB/T 7714 | Adenis, Alice,Debayle, Eric,Ricard, Yanick. Attenuation tomography of the upper mantle[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(15). |
APA | Adenis, Alice,Debayle, Eric,&Ricard, Yanick.(2017).Attenuation tomography of the upper mantle.GEOPHYSICAL RESEARCH LETTERS,44(15). |
MLA | Adenis, Alice,et al."Attenuation tomography of the upper mantle".GEOPHYSICAL RESEARCH LETTERS 44.15(2017). |
条目包含的文件 | 条目无相关文件。 |
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