华北克拉通在古陆拼合和后期破坏过程中构造活动强烈，其壳幔介质在横向和纵向上受到了剧烈的改造和变形；岩石圈和软流圈在物质状态、变形难易程度方面存在显著的不同，高分辨率的岩石圈与软流圈三维结构可以更准确地确定华北克拉通拼合的接触关系及其破坏程度。本申请拟利用多个流动台阵和周边固定台网（2100多个台站）的资料，采用P波和S波接收函数成像、面波层析成像、新改进的接收函数和面波联合反演等技术，获得研究区300 km深度范围内三维S波速度、泊松比结构模型和深部各向异性特征，分析沉积层（浅部低速、高泊松比）、壳内超铁镁质岩石（高速、高泊松比）、岩石圈-软流圈部分熔融体（深部低速、高泊松比）的分布范围以及深部物质运移特征，研究华北克拉通内部块体破坏程度，探讨拉张盆地的变形特征以及郯庐断裂带强震分段性的形成机制。

The North China Craton (NCC for short) has a strong tectonic activity during the paleocontinents consolidation and later destruction, and the media in the crust and mantle of the NCC have undergone severe transformation and deformation in both lateral and vertical directions. Lithosphere and asthenosphere have significant differences in material state and deformation level; High-resolution three-dimensional structure of the lithosphere and asthenosphere can be helpful in accurately determining the consolidation contact relationship and the destruction level of the NCC. This project intends to take advantage of data from multiple mobile seismic arrays and nearby permanent seismic stations (more than 2100), and use P-wave and S-wave receiver function imaging, surface wave tomography, updated joint inversion of receiver function and surface wave techniques to obtain the 3D crust-mantle S-wave velocity structure, Poisson's ratio structure and anisotropy within the depth of 300 km in North China, and to analyze the distribution range of sedimentary layers (low velocity, high Poisson's ratio in the shallow part), ultramafic rocks in the crust (high velocity, high Poisson's ratio), and lithosphere - asthenosphere partial melting (low velocity, high Poisson's ratio at depth), as well as the characteristics of deep material migration. It will be helpful in deep understanding of the destruction extent of the internal blocks within the craton, the deformation characteristics of the extensional basin and the mechanisms for the segmentation of strong earthquake activity in the Tanlu fault zone.