Fundamental mode Rayleigh wave group velocity dispersion data

Fundamental-mode Rayleigh-wave group-velocity dispersion curves have been computed from 14706 regional waveforms (ray-paths) sampling India, Himalaya, Tibet and surrounding regions. These have been combined through ray-based travel-time tomography to compute 2D group-velocity maps at periods between 10 and 120~s. These ray-paths sample the region with unprecedented density and uniformity. The 2D maps have a lateral resolution of 3\deg x3\deg, comparable to the regional geology. The dispersion curves, at each 1\deg\ spaced node-points, are inverted to obtain a 3D isotropic shear-wave velocity structure., Waveform data was collected through field experiment. These have been processed using the multiple filter technique to extract group velocity dispersion curves. , , This archive contains:

1. Earthquake waveform data used to compute the Rayleigh-wave (LR) fundamental-mode group-velocity dispersion
2. The computed dispersion files which have been used for performing the tomography (2D LR maps)

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1. LR_waveform_2022.tgz - Waveform data

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To extract (on linux):
$ tar xvzf LR_waveform_2022.tgz
$ cd LR_waveform_2022

Extracts as LR_waveform_2022/**IISERK_Data**
cut_v_2011221115022_IT_YUMT.BHZ.xy
cut_v_2015325001543_IK_WANI.BHZ.xy

LR_waveform_2022/**INCOIS_Data**
cut_v_2008269014711_IM_KUDL.BHZ.xy
cut_v_2012102104310_IM_SHL.HHZ.xy

LR_waveform_2022/**IRIS_Data**
cut_v_2005088061613_G_HYB.BHZ.xy
cut_v_2009222195539_XW_GHDI.BHZ.xy

Total of 14706 waveform data files (corresponding to the earthquake-station raypaths)

File Format: ASCII XY file
Column-1: Time
Column-2: ground velocity amplitude in m/s

File name convention:
cut_velocity-trace_event-ID_Network-code_Station-code.Component.xy

e.g. cut_v_2010105142637_IT_CHTG.BHZ.xy
cut: waveform i...