Merged multiscale seismic velocity models for southern California (CVM-S4.26-Fang_etal_2019)

merged_model_regular.dat: Reconstructed seismic velocity models used in section 4.2 of Zhang & Ben-Zion, 2024 (https://doi.org/10.1029/2023JB027016) at regular grid points for the region bounds by coordinates [[-120.51, 32.29], [-120.51, 36.58], [-114.51, 36.58], [-114.51, 32.29]]. The dataset adheres to the following format: longitude, latitude, altitude with respect to sea level (in kilometers), Vp (velocity of P-waves in km/s), and Vs (velocity of S-waves in km/s). merged_model_gll.dat: Reconstructed seismic velocity models used in section 4.2 of Zhang & Ben-Zion, 2024 (https://doi.org/10.1029/2023JB027016) at Gauss-Lobato-Legendre (GLL) points within the framework of Spectral Elements (SEM), which includes the model's topographic details. The spectral elements are in irregular shapes due to the topography and are implemented by deforming the mesh grid in the vertical direction. The dataset adheres to the following format: longitude, latitude, depth with respect to free surface (in kilometers), Vp (velocity of P-waves in km/s), and Vs (velocity of S-waves in km/s).merged_model_regular.dat：该数据集包含Zhang与Ben-Zion于2024年发表的学术论文（DOI：https://doi.org/10.1029/2023JB027016）第4.2节中所使用的重建地震速度模型，其采样点均位于规则网格上，覆盖区域的坐标边界为[[-120.51, 32.29], [-120.51, 36.58], [-114.51, 36.58], [-114.51, 32.29]]。数据集的字段格式依次为：经度、纬度、相对于海平面的海拔高度（单位：千米）、P波速度（velocity of P-waves，单位：千米/秒，记为Vp）以及S波速度（velocity of S-waves，单位：千米/秒，记为Vs）。 merged_model_gll.dat：该数据集同样包含上述2024年Zhang与Ben-Zion论文第4.2节中所使用的重建地震速度模型，数据基于谱元法（Spectral Elements, SEM）框架下的高斯-洛巴托-勒让德（Gauss-Lobato-Legendre, GLL）点采样生成，且保留了研究区域的地形细节。由于地形影响，谱元单元呈不规则形态，通过在垂直方向对网格进行变形实现。数据集的字段格式依次为：经度、纬度、相对于自由地表的深度（单位：千米）、P波速度（velocity of P-waves，单位：千米/秒，记为Vp）以及S波速度（velocity of S-waves，单位：千米/秒，记为Vs）。