swrt: a package for semi-analytical solutions of surface wave propagation, including mode conversion, across transversely aligned vertical discontinuities

Clicks: 302
ID: 175147
2018
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Abstract
We present a suite of programs that implement decades-old algorithms for computation of seismic surface wave reflection and transmission coefficients at a welded contact between two laterally homogeneous quarter-spaces. For Love as well as Rayleigh waves, the algorithms are shown to be capable of modelling multiple mode conversions at a lateral discontinuity, which was not shown in the original publications or in the subsequent literature. Only normal incidence at a lateral boundary is considered so there is no Love–Rayleigh coupling, but incidence of any mode and coupling to any (other) mode can be handled. The code is written in Python and makes use of SciPy's Simpson's rule integrator and NumPy's linear algebra solver for its core functionality. Transmission-side results from this code are found to be in good agreement with those from finite-difference simulations. In today's research environment of extensive computing power, the coded algorithms are arguably redundant but SWRT can be used as a valuable testing tool for the ever evolving numerical solvers of seismic wave propagation. SWRT is available via GitHub (https://github.com/arjundatta23/SWRT.git).
Reference Key
datta2018geoscientificswrt: Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;A. Datta;A. Datta
Journal radiologic technology
Year 2018
DOI
10.5194/gi-7-101-2018
URL
https://www.geosci-instrum-method-data-syst.net/7/101/2018/gi-7-101-2018.pdf
Keywords
geophysics cosmic physics

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