[SSS03-05] Development of seismic inversion tool for flat and isotropic layered structures in the ocean (SEIS-FILO)
Keywords:Transdimensional inversion, Receiver function, Surface wave , Ocean-bottom seismometer, Software
Here, I present a computer program package termed SEIS-FILO (seismic inversion tool for flat and isotropic layered structures in the ocean). The software performs transdimensional inversion of receiver functions and surface wave dispersion curves, with the effects of the seawater column fully considered. The state-of-the-art Bayesian probabilistic sampling method known as reversible-jump Markov-chain Monte Carlo is used, where the number of model parameters (i.e., the number of layers) is automatically selected based on the data complexity. The parallel tempering technique is also implemented to enhance the conversion rate. The source codes are written in a modern Fortran programming style (i.e., objective-oriented programming) for a low-maintenance and easy expansion in the future.
Currently, the software undergoes alpha testing: independent/joint inversions of receiver functions and fundamental Rayleigh wave dispersion curves are possible to perform. This alpha version is available at the GitHub repository (https://github.com/akuhara/SEIS_FILO).