期刊
SEISMOLOGICAL RESEARCH LETTERS
卷 91, 期 4, 页码 2378-2389出版社
SEISMOLOGICAL SOC AMER
DOI: 10.1785/0220190318
关键词
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资金
- U.S. Department of Energy [DE-SC0016520]
- U.S. Department of Energy (DOE) [DE-SC0016520] Funding Source: U.S. Department of Energy (DOE)
This article introduces PyKonal: a new open-source Python package for computing travel times and tracing ray paths in 2D or 3D heterogeneous media using the fast marching method for solving the eikonal equation in spherical and Cartesian coordinates. Compiled with the Cython compiler framework, PyKonal offers a Python application program interface (API) with execution speeds comparable to C or Fortran codes. Designed to be accurate, stable, fast, general, extensible, and easy to use, PyKonal offers lowand high-level API functions for full control and convenience, respectively. A scale-independent implementation allows problems to be solved at micro, local, regional, and global scales, and precision can be improved over existing open-source codes by combining different coordinate systems. The resulting code makes state-of-the-art computational capabilities accessible to novice programmers and is efficient enough for modern research problems in seismology.
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