STADIUM-Py: Python Command-line Interface for automated Receiver Functions and Shear-Wave Splitting Measurements

STADIUM-Py is an open-source command-line tool designed for automated computation of receiver functions (RFs) and shear-wave splitting (SWS) measurements. It uses many useful tools from Obspy for data retrieval and processing and integrates them with existing open-source seismological packages for achieving complete automation. STADIUM-Py employs the rf-package algorithm to perform the moveout correction (for Ps phase by default) via the common conversion point (CCP) technique using the IASP91 velocity model. Besides, STADIUM-Py also implements the H-κ technique developed by Zhu & Kanamori (2000) to determine the crustal thickness (H) and the average Vp/Vs ratios (κ) under the seismic station. STADIUM-Py adopts the Python package SplitWavePy developed by Jack Walpole to measure the splitting parameters. It uses the eigenvalue method of Silver and Chan (1991) for estimating the splitting parameters – the azimuth angle of the fast shear wave (φ) and delay time (δt) between the two split shear waves. The User's manual for STADIUM-Py is provided in the package. In addition to computing the RFs and SWS measurements, STADIUM-Py also performs the quality checks at each step. Finally, the results are stored locally for each step of the analysis in the form of figures and tables for further analysis and result verification