Crazyseismic; a MATLAB GUI-based software package for passive seismic data preprocessing

We introduce an open-source MATLAB software package, named Crazyseismic, for passive seismic data preprocessing. Built-in core functions such as seismic phase travel-time calculation and multichannel cross correlation significantly improve the efficiency of data processing. Compared with conventional command-line-style toolboxes, all functions in Crazyseismic are embedded in one single graphic user interface (GUI). The human-machine interactive nature of GUI facilitates data quality control. The simplicity of the software allows users to process Seismic Analysis Code format seismic data with great ease and also provides a means by which users can tailor the software for their specific needs. We demonstrate the power of our software through two field examples: one for P-wave arrival-time picking and the other for receiver function calculation. The software can essentially be used for analyzing all major body-wave phases in seismology.