Deep dynamic site characterization was conducted at the Central United States Seismic Observatory (CUSSO), which is a 587 m deep vertical seismic array situated in the Mississippi embayment. This characterization included a combination of active and passive source surface wave methods and horizontal to vertical spectral ratio (HVSR). These measurements were used in a multimodal joint inversion of Rayleigh and Love dispersion data and the natural site frequency from HVSR (f₀) to develop non-invasive V_S profiles for the site. Downhole seismic measurements were also made down to 425 m to validate the surface wave method results and understand the uncertainty between the various measurements at the site. The developed V_S profiles are compared to published site specific V_S profiles from direct measurements, velocity models, and reference V_S profile for the embayment to understand the variability and uncertainty between different methods. Major differences in the Vs profiles were noticed in the top 50 m, near the Memphis sand layer, and the Paleozoic bedrock layer. Site signatures from experimental dispersion data, HVSR f₀ and empirical transfer function (ETF) were evaluated to assess the appropriateness of the candidate V_S profiles. Comparison results indicate the developed V_S profiles in this study performed well in capturing the site signatures. However, the theoretical dispersion fits from published V_S profiles demonstrated a larger misfit with the experimental data. Theoretical transfer function and Rayleigh ellipticity from published profiles also exhibited considerable differences with the HVSR f₀ and ETF amplification factor.

在美国中央地震台（CUSSO）进行了深部动态场地表征，这是位于密西西比河口的587 m深垂直地震阵列。此表征包括主动和被动源表面波方法以及水平与垂直光谱比（HVSR）的组合。这些测量结果用于瑞利和洛夫频散数据的多峰联合反演以及HVSR的自然位点频率（f ₀），以开发该位点的非侵入性V _S剖面。还对425 m以下的井下地震进行了测量，以验证表面波方法的结果并了解现场各种测量之间的不确定性。发达的V _S型材相比，发布的站点特定V_小号直接测量，速度模型，并参值V曲线_小号天寒港湾了解不同方法之间的差异性和不确定性。在孟菲斯沙层和古生代基岩层附近的前50 m，发现了Vs剖面的主要差异。评估了来自实验色散数据，HVSR f ₀和经验传递函数（ETF）的位点签名，以评估候选V _S轮廓的合适性。比较结果表明，在这项研究中开发的V _S轮廓在捕获站点签名方面表现良好。但是，理论上的色散符合已发布的V _S曲线表明与实验数据的不匹配性更大。理论上的传递函数和已发表资料的瑞利椭圆率与HVSR f ₀和ETF放大因子也表现出相当大的差异。