高频面波技术被广泛应用于浅部S波（剪切波）速度成像研究，基于频散曲线反演的面波探测技术不适用于二维横向不均匀和横向速度参数变化梯度大的地球模型。我国陆地面波探测技术发展成熟，但海底面波探测技术基本空白。针对上述问题，本申请拟以时间域波形反演理论为基础，开展海底四分量（4-C）面波数据用于二维S波速度成像的方法研究，解决初始模型选取、多目标函数建立与最优Pareto解求取、震源效应消除与震源子波选取等关键技术，优化选取多目标联合反演策略，利用包括合成模型理论测试和实测数据反演两种手段检验反演方法的应用效果，为海底面波用于浅部S波速度成像研究提供技术支撑。

High-frequency surface-wave techniques are widely used to estimate shallow shear-wave velocity. Surface-wave methods based on inversions of dispersion curves are only suitable to laterally homogeneous or smoothly laterally varying heterogeneous earth models. Chinese surface-wave technique is mature on land but almost blank in the ocean. This study focus on the ocean bottom four-component (4-C) interface-wave data for two-dimensional shear-wave velocity imaging based on the time-domain waveform inversion theory. Resolve key techniques such as choose initial model, establish multi-objective function and calculate optimal Pareto solution, remove source effect and select source wavelet, and find an optimal multi-objective joint inversion strategy finally. A model test and a real-word data verify the validity of our method, and provide technical support for the study of ocean bottom interface-wave for shallow S-wave velocity.