火山岩浆系统是火山喷发的物质基础和动力来源。岩浆囊的存在与否、几何形态和规模大小是判定火山活动状态的重要依据。研究火山区壳内速度结构、Vp/Vs比以及各向异性特征有利于揭示岩浆的存储方式、几何形态以及岩浆侵入的构造细节，对活火山的喷发方式及规模的探究与预测也具有一定的启示意义。本课题选取长白山天池火山作为研究对象，通过布设两条地震观测剖面，利用接收函数的H-K叠加、反演和CCP叠加偏移方法研究天池火山区的地壳结构、属性以及岩浆囊的分布、深度和规模等信息。通过各向异性H-K叠加和反演，研究精细尺度岩浆侵入特征（例如岩床或岩墙），分析岩浆存储和传输的深层构造条件，建立合理的火山地壳模型。此外，结合中国地震台网和NECESSArray观测到的远震数据，采用P波各向异性层析成像方法研究长白山火山区P波速度和各向异性结构。通过分析岩石圈地幔、软流圈的变形特征，揭示长白山火山的起源及动力学机制。

The magma systems in the volcanic region provide the sources and dynamics of the volcanic eruption. The existence of magma chamber together with its scale and geometry characteristics is a judge criterion for steady state of a volcanic system. Studying the velocity structure, Vp/Vs ratio and anisotropy in the crust is of great importance for investigating the magma storage, intrusion and geometry of feeding system, as well as better understanding of the formation mechanism and eruption styles of the active volcano. In this project, we select the Tianchi volcano, Changbaishan as the study object. By deploying broadband stations along two seismic profiles, we use the receiver-function H-K stacking, inversion and CCP stacking technique to study the crustal structure, composition as well as the magma chamber distribution, depth and size. By using the anisotropic H-K stacking and inversion, we study seismic anisotropy in the crust to finding out fine-scale magma intrusion (for example, sill and dyke) and analyzing the tectonic setting of the magma storage and supply. By using the teleseismic data recorded by the NECESS Array and regional seismic networks of China, we adopt P-wave anisotropic tomography to study the P-wave velocity and anisotropic structures beneath the Changbaishan volcanic areas. By analyzing the deformation characteristics of the lithospheric mantle and asthenosphere, we can better understand the origin and deep Earth dynamics of the Changbaishan volcano.