The Jiaonan uplift and its adjacent areas (JUAA) are the result of collision and amalgamation of the North China plate and Yangtze plate. In this area, the tectonic environment is complex and crustal deformation is strong. However, detailed and in-depth study of the upper crustal structure and medium properties in the JUAA has not previously been performed. The high-resolution three-dimensional crustal velocity structure of the JUAA is helpful to analyze the characteristics of the crustal structure in this area and is important for evaluating the tectonic environment and medium properties of the JUAA. We obtained the three-dimensional crustal velocity structure in the JUAA using the double-difference seismic tomography technique, and found that the Rizhao area and the sea areas to its southwest in the Jiaonan uplift are characterized by a high-velocity structure, and that most of the high-velocity anomaly area is located in the sea area. The crustal velocity values of the southern end of the Yishu fault zone are also high. The high crustal velocity anomaly areas in the JUAA are considered to be caused by the upwelling of mantle material. The velocity structure of the upper crust beneath the depression structures shows notable low-velocity anomalies, which are closely related to loose sediments in the depression structures. The existence of abnormally high-velocity and low-velocity structures in the Jiaonan uplift indicates that there are substantial differences in the properties of the crustal media in the Jiaonan uplift. Crust-mantle interaction in the Jiaonan uplift is mainly concentrated in the Rizhao area and sea areas to its southwest.

胶南隆起及其邻近地区（JUAA）是华北板块与扬子板块碰撞拼合的结果。该区构造环境复杂，地壳变形强烈。然而，此前尚未对JUAA上地壳结构和介质性质进行详细、深入的研究。 JUAA高分辨率三维地壳速度结构有助于分析该区地壳结构特征，对评价JUAA的构造环境和介质性质具有重要意义。利用双差地震层析成像技术获得了日照地区地壳三维速度结构，发现胶南隆起日照地区及其西南部海域具有高速结构特征，且大部分地区存在高速结构特征。高速异常区位于海域。沂沭断裂带南端地壳速度值也较高。 JUAA的高地壳速度异常区被认为是由地幔物质上涌引起的。凹陷构造下的上地壳速度结构表现出明显的低速异常，这与凹陷构造内的松散沉积物密切相关。胶南隆起异常高速和低速构造的存在表明胶南隆起地壳介质性质存在显着差异。胶南隆起壳幔相互作用主要集中在日照地区及其西南部海域。