Imaging the Vp/Vs Structure Beneath the Central Taupo Volcanic Zone, New Zealand, Using Adjoint-State Traveltime Tomography with S-P Differential Data

1. Model file 'TVZ_vp_ratio_vs_3D': 120 140 45 - the total number of grid nodes in three (longitude, latitude and depth) directions. 173.9117 -39.8423 30.00 7.8398 1.7200 4.1082 - longitude, latitude, depth, vp, ratio, vs 2. Traveltime files: (1) 'P_traveltime_data' and 'S_traveltime_data' have the same data format.1 1980 1 2 18 24 15.400 -38.4800 176.7500 5.00 3.40 5 1560662 1 1 KRP -37.92320 175.53770 64.00000 P 122.70 21.60000 1 2 NGZ -39.17560 175.60120 1452.00000 P 126.04 22.30000 1 3 WTZ -37.98290 176.98850 43.00000 P 59.07 9.80000 1 4 TUA -38.80620 177.15070 274.00000 P 50.27 8.60000 1 5 WNZ -38.62950 176.10300 350.00000 P 58.67 10.60000 num, year, month, day, hour, minute, second, latitude, longitude, depth, magnitude, number of stations, event_ID num, station_num, station_name, latitude, longitude, elevation, phase, distance, arrival_time (2) 'S_P_traveltime_data' data format. 1 1980 1 2 18 24 15.400 -38.4800 176.7500 5.00 3.40 2 1560662 1 1 WTZ -37.98290 176.98850 43.00000 59.07 P 9.800 S 17.600 1 2 TUA -38.80620 177.15070 274.00000 50.27 P 8.600 S 14.600 num, year, month, day, hour, minute, second, latitude, longitude, depth, magnitude, number of stations, event_ID num, station_num, station_name, latitude, longitude, elevation, distance, phase_P, P_arrival_time, phase_S, S_arrival_time Note: These traveltime data represent the original dataset after an initial selection, with no additional filtering applied, as shown in the manuscript.