Seismic Azimuthal Anisotropy Model of the Anatolian Plate

DATASET DESCRIPTION This dataset is supplementary to: Layered Seismic Anisotropy and Tectonics of the Anatolian Plate (GRL, 2026) ================================================================================ FILES INCLUDED: 1. Anatolia_Azi_anisotropy_model.nc - 3D anisotropy model (NetCDF4)2. Surf_Azi_3layer.txt - Surface wave 3-layer measurements (409 grid points)3. SKS_1layer_data.txt - SKS splitting, single layer (709 stations)4. SKS_2layer_data.txt - SKS splitting, two layers (298 stations)5. RF_A1max_data.txt - Receiver function anisotropy (242 stations) ================================================================================ NAMING CONVENTION: All uncertainty parameters use "unc_" prefix:unc_fa - uncertainty in fast orientation (degrees)unc_amp - uncertainty in amplitude (%)unc_dt - uncertainty in delay time (seconds)unc_phi - uncertainty in fast direction (degrees) ================================================================================ FILE 1: Anatolia_Azi_anisotropy_model.nc Format: NetCDF4 (CF-1.0 compliant)Coverage: 25.6-41.6°E, 36.2-41.4°N (0.4° grid), 10-200 km depth (10 km intervals) Three-layer model:C1: Crustal layer (~10-40 km)M1: Lithospheric mantle (40 km thick, ~40-80 km depth)M2: Asthenospheric mantle (~80-200 km) 3D Variables (depth-dependent) [depth, lat, lon]:fa - fast orientation (degrees, 0-180°, clockwise from north)unc_fa - uncertainty in fast orientation (degrees)amp - anisotropy amplitude (percent, %)unc_amp - uncertainty in amplitude (percent, %)layer_type - layer classification (1=sediment, 2=crust, 3=lith.mantle, 4=asthen.mantle, -1=no data) 2D Variables (layer-averaged) [lat, lon]:faC1, ampC1, unc_faC1, unc_ampC1 - Crustal layer (C1)faM1, ampM1, unc_faM1, unc_ampM1 - Lithospheric mantle (M1)faM2, ampM2, unc_faM2, unc_ampM2 - Asthenospheric mantle (M2) ================================================================================ FILE 2: Surf_Azi_3layer.txt Format: ASCII, space-delimited, 409 grid pointsCoverage: 0.4° × 0.4° grid over Anatolian region Columns (14):lon, lat - grid location (decimal degrees)fa_C1 - crustal fast orientation (degrees, 0-180°)amp_C1 - crustal anisotropy amplitude (percent, %)unc_fa_C1 - crustal fast orientation uncertainty (degrees)unc_amp_C1 - crustal amplitude uncertainty (percent, %)fa_M1 - lithospheric mantle fast orientation (degrees, 0-180°)amp_M1 - lithospheric mantle amplitude (percent, %)unc_fa_M1 - lithospheric mantle orientation uncertainty (degrees)unc_amp_M1 - lithospheric mantle amplitude uncertainty (percent, %)fa_M2 - asthenospheric mantle fast orientation (degrees, 0-180°)amp_M2 - asthenospheric mantle amplitude (percent, %)unc_fa_M2 - asthenospheric mantle orientation uncertainty (degrees)unc_amp_M2 - asthenospheric mantle amplitude uncertainty (percent, %) ================================================================================ FILE 3: SKS_1layer_data.txt Format: ASCII, space-delimited, 709 stationsDescription: Single-layer SKS splitting (depth-integrated anisotropy) Columns (8):net - network codesta - station codelon - station longitude (decimal degrees)lat - station latitude (decimal degrees)dt - delay time between fast and slow waves (seconds)phi - fast polarization direction (degrees, 0-180°, from north)unc_dt - delay time uncertainty (seconds)unc_phi - fast direction uncertainty (degrees) ================================================================================ FILE 4: SKS_2layer_data.txt Format: ASCII, space-delimited, 298 stationsDescription: Two-layer SKS splitting inversion for vertical variation Columns (12):net - network codesta - station codelon - station longitude (decimal degrees)lat - station latitude (decimal degrees)dt_upper - upper layer delay time (seconds)phi_upper - upper layer fast direction (degrees, 0-180°, from north)unc_dt_upper - upper layer delay time uncertainty (seconds)unc_phi_upper - upper layer fast direction uncertainty (degrees)dt_lower - lower layer delay time (seconds)phi_lower - lower layer fast direction (degrees, 0-180°, from north)unc_dt_lower - lower layer delay time uncertainty (seconds)unc_phi_lower - lower layer fast direction uncertainty (degrees) ================================================================================ FILE 5: RF_A1max_data.txt Format: ASCII, space-delimited, 242 stationsDescription: Receiver function azimuthal anisotropy Columns (8):sta - station codelon - station longitude (decimal degrees)lat - station latitude (decimal degrees)amp_A1max - maximum A1 amplitude (dimensionless)strike_A1max - A1max strike (degrees, 0-180°, from north)unc_amp - A1max amplitude uncertainty (dimensionless)unc_strike - A1max strike uncertainty (degrees)depth - depth of A1max (km, mainly within the crust) ================================================================================ COORDINATE SYSTEM: Longitude/Latitude: WGS84, decimal degreesDepth: km below sea levelOrientation: degrees clockwise from north (0°=N, 90°=E, range 0-180°)