Rayleigh waves employed in engineering geophysical applications are typically generated by vertical strikes on a metallic plate that serves as a coupler between an active input source (e.g., a sledgehammer) and the ground surface. Seismic surface waves can also be generated with horizontal impacts (i.e., Love waves) using specialized coupling plates. Survey design, including the source characteristics and data acquisition parameters, can influence the acquired signals and the information derived from their analysis. Despite a growing body of research on Love wave testing, much of the basic information regarding optimal Love wave field data acquisition including source effects, near-field limitations, and receiver spacing remains unquantified. The objective of this study was to improve understanding of Love survey parameters and their effect on resolution. Rayleigh and Love waveforms were collected with multiple active seismic sources at three sites and a systematic comparison was made between the two types of waves. Also, seismic wave propagation was simulated using the code SPECFEM2D to further investigate their differences. The results revealed essential information about the role of different source and survey parameters on surface wave data. For example, the minimum source offset to avoid near-field effects was comparable for Rayleigh and Love waves (0.3–0.4 of the maximum wavelength). At closer source offset locations, Rayleigh waves were more affected by near-field effects and showed an additional 10% underestimation of phase velocities. The results from this case study provide new insights about survey design and its effects on surface wave testing.

工程地球物理应用中采用的瑞利波通常由垂直撞击金属板产生，金属板用作有源输入源（例如，大锤）和地表之间的耦合器。也可以使用专门的耦合板通过水平冲击（即洛夫波）产生地震表面波。调查设计，包括源特征和数据采集参数，可以影响采集的信号和从其分析中获得的信息。尽管关于洛夫波测试的研究越来越多，但关于最佳洛夫波场数据采集的许多基本信息（包括源效应、近场限制和接收器间距）仍未量化。本研究的目的是提高对 Love 调查参数及其对分辨率影响的理解。Rayleigh 和 Love 波形是在三个地点用多个活动震源收集的，并对两种类型的波进行了系统比较。此外，使用代码 SPECFEM2D 模拟地震波传播以进一步研究它们的差异。结果揭示了有关不同源和调查参数对表面波数据的作用的基本信息。例如，避免近场效应的最小源偏移与瑞利波和洛夫波（最大波长的 0.3-0.4）相当。在更近的源偏移位置，瑞利波受近场效应的影响更大，并且表现出额外 10% 的相速度低估。