典型文献
Small-Scale Heterogeneity and Seismic Anisotropy in the Mid-Mantle:Oceanic Crust versus Meta-Stable Olivine
文献摘要：
The mid-mantle (i.e., the top lower mantle) roughly repre-sents the mantle portion ranging from ～700 to 1600 km depths. It has received increasing attention mainly due to two facts including (i) subducted slabs largely trapped there (Fukao and Obayashi, 2013) and (ii) plume necking and lateral pond-ing at ～1000 km depth (French and Romanowicz, 2015). A number of mechanisms have been proposed to explain the slab stagnation in the mid-mantle, such as the increased viscosity, controlled by either ferropericlase (Marquardt and Miyagi, 2015) with its iron spin transition (e. g., Shahnas et al., 2017a, b; Justo et al., 2015), or bridgmanite-enriched ancient mantle structures (Ballmer et al., 2017, 2015);the viscosity jump, con-firmed by reanalyzing the long-wavelength nonhydrostatic ge-oid (Rudolph et al., 2015), may also play a vital role in plume dynamics in the mid-mantle (Xiang et al., 2021). A recent study suggested the existence of meta-stable olivine within the subducting slabs in the mid-mantle (Kong et al., 2022), which increases slab buoyancy and thereby promotes stagnation.
文献关键词：
中图分类号：
作者姓名：
Xiaobo He
作者机构：
Department of Ocean Exploration and Technology,Zhejiang Ocean University,Zhoushan 316022,China
文献出处：
引用格式：
[1]Xiaobo He-.Small-Scale Heterogeneity and Seismic Anisotropy in the Mid-Mantle:Oceanic Crust versus Meta-Stable Olivine)[J].地球科学学刊（英文版）,2022(04):1056-1058
A类：
Olivine,Fukao,Obayashi,Romanowicz,ferropericlase,Miyagi,Shahnas,Justo,bridgmanite,Ballmer,nonhydrostatic
B类：
Small,Scale,Heterogeneity,Seismic,Anisotropy,Mid,Mantle,Oceanic,Crust,versus,Stable,mid,mantle,top,lower,roughly,repre,sents,portion,ranging,from,depths,It,has,received,increasing,attention,mainly,due,two,facts,including,subducted,slabs,largely,trapped,ii,plume,necking,lateral,pond,French,number,mechanisms,have,been,proposed,explain,stagnation,such,increased,viscosity,controlled,either,Marquardt,its,iron,spin,transition,2017a,enriched,ancient,structures,jump,firmed,reanalyzing,long,wavelength,oid,Rudolph,may,also,play,vital,role,dynamics,Xiang,recent,study,suggested,existence,meta,stable,olivine,within,subducting,Kong,which,increases,buoyancy,thereby,promotes
AB值：
0.57596
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