SurfATT Documentation
This is a package for Surface wave Adjoint Travel-time Tomography.
Mijian Xu, Shijie Hao, Jing Chen, Bingfeng Zhang, Ping Tong; SurfATT: High‐Performance Package for Adjoint‐State Surface‐Wave Travel‐Time Tomography. Seismological Research Letters (2025); doi: https://doi.org/10.1785/0220240206 ; PDF
SurfATT is a package for surface wave travel-time tomography, which is designed to invert surface wave travel-time data for 2D/3D isotropic or azimuthal anisotropic velocity structures with following features:
- Inversion for isotropic or azimuthal anisotropic media (Hao et al., 2026).
- Calculation of surface wave travel time based on Eikonal equation with fast sweeping method (Tong, 2021).
- Computation of isotropic and anisotropic sensitivity kernels through adjoint method (Tong, 2021).
- Multi-grid model parametrization utilization in optimization (Tong et al., 2019).
- Consideration of surface topography in forward and adjoint simulation (Hao et al., 2024).
References
Hao, Shijie; Chen, Jing; Xu, Mijian; Tong, Ping (2024). Topography-Incorporated Adjoint-State Surface Wave Traveltime Tomography: Method and a Case Study in Hawaii. Journal of Geophysical Research: Solid Earth, 129(1), e2023JB027454. https://doi.org/10.1029/2023jb027454 Hao, Shijie; Chen, Jing; Xu, Mijian; Yu, Dayong; Xie, Jingyun; Tong, Ping (2026). Topography-Incorporated Adjoint-State Surface Wave Traveltime Tomography for Azimuthally Anisotropic Media. Journal of Geophysical Research: Solid Earth, 131(4), e2025JB033164. https://doi.org/10.1029/2025jb033164 Tong, Ping; Yang, Dinghui; Huang, Xueyuan (2019). Multiple-grid model parametrization for seismic tomography with application to the San Jacinto fault zone. Geophysical Journal International, 218(1), 200-223. https://doi.org/10.1093/gji/ggz151 Tong, Ping (2021). Adjoint-State Traveltime Tomography: Eikonal Equation-Based Methods and Application to the Anza Area in Southern California. Journal of Geophysical Research: Solid Earth, 126(5), e2021JB021818. https://doi.org/10.1029/2021jb021818 Tong, Ping (2021). Adjoint-State Traveltime Tomography for Azimuthally Anisotropic Media and Insight Into the Crustal Structure of Central California Near Parkfield. Journal of Geophysical Research: Solid Earth, 126(10), e2021JB022365. https://doi.org/10.1029/2021jb022365Last updated on