Shear-wave velocity profiles are the main site-specific data for site classification, which are commonly used for the purposes of seismic microzonation and hazard assessment. The controlled-source spectral analysis of surface wave (CSSASW) dispersion measurements have been successfully performed to characterize seismic sites up to 30-m depths. This study utilizes the CSSASW application in Jizan City to obtain shear-wave velocity profiling at 14 sites distributed throughout the city using an electromagnetic vibrator. The recorded Rayleigh wave phase velocity dispersion curves are transformed to calculate the apparent velocity distribution in depth. Shear-wave velocities, calculated using theoretical relationships, can then be utilized to obtain design parameters for the soil strata. Shear-wave velocity varies from 216.97 to 829.59 m/s through Jizan City indicating the remarkable change of the near-surface sediments. The hard soil profiles of soft rock that were revealed by V_s values in this terrain (sites No. 7, 8, and 13) can be attributed to the existence of a dense layer of salt rock. Construction in such areas is prohibited due to the high susceptibility of large settlements in foundations as a consequence of salt dissolution. In the Sabkha terrains, all soil profiles were related to V_s, defined as stiff soils that were then modified to a softer class owing to their high liquefaction potential. These results should be considered before establishing important and strategic projects in the city.

剪切波速度剖面是用于场地分类的主要场地特定数据，通常用于地震微区划和危险评估。表面波 (CSSASW) 色散测量的受控源光谱分析已成功地用于表征深度达 30 米的地震现场。本研究利用吉赞市的 CSSASW 应用程序，使用电磁振动器在分布在整个城市的 14 个地点获得剪切波速度剖面。转换记录的瑞利波相速度频散曲线以计算深度的视速度分布。然后可以利用使用理论关系计算的剪切波速度来获得土层的设计参数。剪切波速度从 216.97 到 829 不等。59 m/s 通过吉赞市，表明近地表沉积物的显着变化。V 揭示的软岩硬土剖面图该地形（第 7、8 和 13 号站点）中的_s值可归因于存在致密的盐岩层。由于盐溶解导致地基中的大型沉降极易发生，因此禁止在这些地区进行建设。在 Sabkha 地形中，所有土壤剖面都与 V _s相关，V _s定义为坚硬的土壤，然后由于其高液化潜力而被修改为较软的类别。在该市建立重要的战略项目之前，应考虑这些结果。