华北克拉通破坏是当今地学研究的热点，华北地区也是强震多发区。精准的地壳速度结构模型是构建区域地震学参考模型的关键，联合人工地震二维剖面和台阵三维成像结果是构建区域地震学参考模型的重要途径。本项目将利用华北地区51条人工地震剖面探测成果，联合密集宽频带台阵观测资料，采用接收函数和噪声成像等方法得到的地壳速度结构参数，构建华北地区地壳三维结构地震学参考模型。该模型不仅包含高精度的沉积层结构、地壳速度结构和壳内界面形态，还包含太行山断裂带和郯庐断裂带的深部结构信息，以及采用多种方法获得的华北地区低速层的构造信息。通过对模型的详细分析研究，探讨壳幔耦合关系、块体接触关系、强震孕震环境，华北克拉通破坏的地壳响应。

The mechanisms of cratonic destruction and destructively intraplate seismicity are two main concerned scientific questions in North China Block. The fine crustal structure, which can be modeled from joint the active Deep Seismic Sounding(DSS) profiles and passive array tomography, is the vital component of the geophysical reference model. The project prepare to make use of the achievements of 51 DSS profiles through North China Block(NCB), joint the results of receiver function and ambient tomography study used seismic array, to construct the seismic reference model of NCB with 3-D P-wave crustal velocity structure. The model will include not only the fine sedimentary depth, crustal P-wave velocity structure and interface topography, but the deep structural information of Taihangshan and Tanlu fracture zones and the distribution of low-velocity layers. Then we will discuss the science questions such as crust mantle coupling model, seismogenic environment, contact relations, crust response of cratonic destruction, and so on.