地幔顶部Pn波成像方法的发展与应用

地震Pn波的射线路径集中在地幔顶部有限深度范围内，在射线横向覆盖密度方面具有独特优势，因而Pn震相是研究地幔顶部这一重要层面速度和各向异性结构的优势震相. Pn波速度的横向变化可以反映上地幔温度及成分差异，Pn波各向异性能够反映地幔物质的运动及形变特征，高精度的地幔顶部Pn波速度和各向异性结构可以提供关于岩石圈结构、板块运动和深部热物质运移过程等关键信息. Pn波成像方法经过发展和改进，已经成为研究地幔顶部结构的成熟技术，并被应用于全球范围获取地壳厚度、上地幔速度和各向异性等结构信息，精细刻画了全球上地幔结构的横向不均匀性，进一步认识了地球内部结构和板块俯冲、大陆碰撞变形、火山活动等动力学过程...

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Published in地球与行星物理论评 Vol. 54; no. 2; p. 197
Main Authors 贺羽慧, 关玉蕊, 孔华, 吕彦, He, Yuhui, Guan Yurui, Kong, Hua, Lü Yan
Format Journal Article
LanguageChinese
Published Beijing Editorial Office of Reviews of Geophysics and Planetary Physics 01.01.2023
Subjects
Anisotropy
Deformation
Heterogeneity
Tomography
Upper mantle
Velocity
Wave velocity
Online AccessGet full text
ISSN2097-1893
DOI10.19975/j.dqyxx.2022-052

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Abstract 地震Pn波的射线路径集中在地幔顶部有限深度范围内，在射线横向覆盖密度方面具有独特优势，因而Pn震相是研究地幔顶部这一重要层面速度和各向异性结构的优势震相. Pn波速度的横向变化可以反映上地幔温度及成分差异，Pn波各向异性能够反映地幔物质的运动及形变特征，高精度的地幔顶部Pn波速度和各向异性结构可以提供关于岩石圈结构、板块运动和深部热物质运移过程等关键信息. Pn波成像方法经过发展和改进，已经成为研究地幔顶部结构的成熟技术，并被应用于全球范围获取地壳厚度、上地幔速度和各向异性等结构信息，精细刻画了全球上地幔结构的横向不均匀性，进一步认识了地球内部结构和板块俯冲、大陆碰撞变形、火山活动等动力学过程. 随着全球地震台站覆盖的日益密集和观测数据的不断增加，大量高质量的Pn数据为地幔顶部精细结构的研究提供了有利条件. 本文围绕Pn波成像方法的发展及在全球范围的应用进行综述.
AbstractList 地震Pn波的射线路径集中在地幔顶部有限深度范围内，在射线横向覆盖密度方面具有独特优势，因而Pn震相是研究地幔顶部这一重要层面速度和各向异性结构的优势震相. Pn波速度的横向变化可以反映上地幔温度及成分差异，Pn波各向异性能够反映地幔物质的运动及形变特征，高精度的地幔顶部Pn波速度和各向异性结构可以提供关于岩石圈结构、板块运动和深部热物质运移过程等关键信息. Pn波成像方法经过发展和改进，已经成为研究地幔顶部结构的成熟技术，并被应用于全球范围获取地壳厚度、上地幔速度和各向异性等结构信息，精细刻画了全球上地幔结构的横向不均匀性，进一步认识了地球内部结构和板块俯冲、大陆碰撞变形、火山活动等动力学过程. 随着全球地震台站覆盖的日益密集和观测数据的不断增加，大量高质量的Pn数据为地幔顶部精细结构的研究提供了有利条件. 本文围绕Pn波成像方法的发展及在全球范围的应用进行综述.
Author 孔华
关玉蕊
贺羽慧
Kong, Hua
Guan Yurui
Lü Yan
吕彦
He, Yuhui
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SubjectTerms Anisotropy
Deformation
Heterogeneity
Tomography
Upper mantle
Velocity
Wave velocity
Title 地幔顶部Pn波成像方法的发展与应用
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