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Computer Programs in Seismology – 50 Years of Progress

Description: 

The Computer Programs in Seismology package offers a comprehensive set of software tools designed to process and analyze seismic data, compute synthetic seismograms using a variety of computational approaches, investigate seismic source characteristics, and invert for Earth structure. This package is continuously developed and refined, often to respond to user needs. The latest distribution integrates cleanly with the most recent GCC/GFortran and Clang/Flang compilers on Linux and MacOS, and operates under Wayland with XWayland in addition to Xorg. Newly incorporated codes include srfpar96, which generates surface-wave dispersion inversion kernels; hwhole96strain, which calculates isotropic whole-space Green’s functions and spatial partial derivatives for use with hpulse96strain to determine stress, strain, and displacement time series, as well as to validate the wavenumber integration tools employed for more complex models; rregn96 and rlegn96, which compute surface-wave eigenfunctions using generalized reflection matrices, which can be more stable for models with low-velocity layers. Tutorials added in 2024 address surface-wave inversion kernels, surface-wave eigenfunctions, quarter-wavelength site response, wave propagation for ocean-floor observations, and computations of strain and displacement in the context of DAS analysis, epicenter estimation, and testing of full moment tensor inversion codes.
The package is now available at GitHub as well as at the SLU site: https://rbherrmann.github.io/ComputerProgramsSeismology/https://www.eas.slu.edu/eqc/ComputerProgramsSeismology/

Session: Numerical Modeling in Seismology: Theory, Algorithms and Applications [Poster]

Type: Poster

Date: 4/17/2025

Presentation Time: 08:00 AM (local time)

Presenting Author: Robert

Student Presenter: No

Invited Presentation: 

Poster Number: 120

Authors