Multi-scale velocity models for the Ridgecrest region, CA

Regional_model_high_sampling.dat: The original velocity values are assigned to the Gauss-Lobato-Legendre (GLL) points within the framework of Spectral Elements (SEM). Owing to the extensive dataset of velocity values, the original model has been downsampled at a ratio of 1:3. This process yielded the file Regional_model_high_sampling.dat, which includes the model's topographic details. Given that the spectral elements are in irregular shapes due to the topography, and the GLL points are non-uniform, it is imperative to employ a 3D interpolation technique for the accurate retrieval of the required data points. 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).

Regional_model_low_sampling.dat is the other downsmapled version of regional velocity models, with a much lower sampling rate. This model is created by interpolating the original models at various altitudes (or depths), from -20 km to 0 km (or 0 to 20 km in depth) with an increments of 0.5 km. With this version, you can easily plot the horizontal sections of the models. The data is formatted as follows: 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).

fault_zone_model_under_B1.dat: 1D fault zone model under B1 array (https://ds.iris.edu/gmap/#network=3J&station=B1*&planet=earth). The data format is: distance to the first station of B1 array (m), altitude (m), Vp (km/s), Vs (km/s).

fault_zone_model_under_B2.dat: 1D fault zone model under B2 array (https://ds.iris.edu/gmap/#network=3J&station=B2*&planet=earth). The data format is: distance to the first station of B2 array (m), altitude (m), Vp (km/s), Vs (km/s).

fault_zone_model_under_B3.dat: 1D fault zone model under B3 array (https://ds.iris.edu/gmap/#network=3J&station=B3*&planet=earth). The data format is: distance to the first station of B3 array (m), altitude (m), Vp (km/s), Vs (km/s).

fault_zone_model_under_B4.dat: 1D fault zone model under B3 array (https://ds.iris.edu/gmap/#network=3J&station=B4*&planet=earth). The data format is: distance to the first station of B4 array (m), altitude (m), Vp (km/s), Vs (km/s).