自中新生代以来东北地区的岩石圈构造演化、板内火山活动与鄂霍茨克缝合带、太平洋板块俯冲作用密切相关,但作用机制和范围尚存很大争议。虽然在长白山和五大连池火山区下方探测到柱状低速异常体，但是否为上升的软流圈热物质尚需进一步研究和验证。上述科学问题均与地幔流模式密切相关，所以本研究拟实现近震与远震P波联合垂向各向异性层析成像方法。收集中国东北和华北部分地区固定台、流动台以及本项目将在五大连池火山区布设20套次宽频带流动地震台站接收的近震与远震体波走时资料，获取中国东北地区体波速度与P波各向异性结构。水平和垂向方位各向异性结果可以清晰分辨出研究区上地幔中哪些区域以上升流为主，哪些区域以水平地幔流为主。利用上述信息着重研究和探讨以下两个科学问题：一是研究长白山、五大连池火山形成机制及与太平洋板块俯冲相关的深部构造活动对地表火山活动的影响；二是探讨该区板块相互作用对东北地区岩石圈构造演化的动力作用。

Since the Mesozoic and Cenozoic, evolution of lithospheric structure, activity of intraplate volcanism in Northeast China, are closely related to the subduction of the Pacific plate and Mongolia-Okhotsk suture zone, but the tectonic mechanism and extent exist controversy. Although the column low-velocity anomalies were imaged beneath the Changbai and Wudalianchi intraplate volcanoes, whether these anomalies being asthenospheric upwellings needs to be further studied and tested. Above scientific issues are all related to the mantle flow. In this project, we present a P-wave radial anisotropy tomography method by using regional and teleseismic data jointly. We collect regional and teleseismic travel-time data recorded by the permanent, temporary and new 20 stations we will set up, and use the radial anisotropy tomography to obtain the body wave velocity and anisotropic structures of the Northeast China. Radial and azimuth anisotropic structures can clearly present the rising and horizontal flow. We mainly discuss the following two scientific issues by using anisotropic structures. One is origin and evolution of Changbai and Wudalianchi volcanoes, and effect of deep tectonic activities related to the Pacific subduction on the volcanic activities; the other is discussing the deep dynamic actions of plate movement to the lithosphere evolution in Northeast China.