We use SPECFEM3D GLOBE v8.1.0 ( Komatitsch and Tromp, 2002; Komatitsch and Tromp, 2002; Komatitsch et al., 2023) published under the GPL 3 license.

We thank the Computational Infrastructure for Geodynamics (http://geodynamics.org) which is funded by the National Science Foundation under awards EAR-0949446, 1550901 and 2149126.

Dimitri Komatitsch, Jeroen Tromp, Daniel Peter, Lucas Sawade, Julien Thurin, Michael Afanasiev, Dmitry Alexeev, Jean-Paul (Pablo) Ampuero, Kazuto Ando, Etienne Bachmann, Kangchen Bai, Wolfgang Bangerth, Piero Basini, Stephen Beller, Celine Blitz, Alexis Bottero, Ebru Bozdag, Emanuele Casarotti, Joseph Charles, … Hejun Zhu. (2023). SPECFEM/specfem3d_globe: SPECFEM3D_GLOBE v8.1.0 (v8.1.0). Zenodo. https://doi.org/10.5281/zenodo.10411115

Komatitsch, D.; Tromp, J. (2002a), Spectral-element simulations of global seismic wave propagation-I. Validation, Geophysical Journal International, 149 (2) , 390-412, doi: 10.1046/j.1365-246X.2002.01653.x, url: http://doi.wiley.com/10.1046/j.1365-246X.2002.01653.x

Komatitsch, D.; Tromp, J. (2002b), Spectral-element simulations of global seismic wave propagation–II. Three-dimensional models, oceans, rotation and self-gravitation, Geophysical Journal International, 150 (1) , 303-318.

If you use GPU graphics card acceleration, please cite at least one of the following:

• Madec, R.; Komatitsch, D.; Diaz, J. (2009), Energy-conserving local time stepping based on high-order finite elements for seismic wave propagation across a fluid-solid interface, Computer Modeling in Engineering and Sciences (CMES), 14 (2), 163
• Michéa, D.; Komatitsch, D. (2010), Accelerating a three-dimensional finite-difference wave propagation code using GPU graphics cards: Accelerating a wave propagation code using GPUs, Geophysical Journal International, 182 (1), 389-402, doi: 10.1111/j.1365-246X.2010.04616.x, url: http://gji.oxfordjournals.org/cgi/doi/10.1111/j.1365-246X.2010.04616.x
• Komatitsch, D.; Michéa, D.; Erlebacher, G. (2009), Porting a high-order finite-element earthquake modeling application to NVIDIA graphics cards using CUDA, Journal of Parallel and Distributed Computing, 69 (5),  451-460, doi: 10.1016/j.jpdc.2009.01.006, url: http://linkinghub.elsevier.com/retrieve/pii/S0743731509000069
• Komatitsch, D.; Erlebacher, G.; Göddeke, D.; Michéa, D. (2010), High-order finite-element seismic wave propagation modeling with MPI on a large GPU cluster, Journal of Computational Physics, 229 (20), 7692-7714, doi: 10.1016/j.jcp.2010.06.024, url: http://linkinghub.elsevier.com/retrieve/pii/S0021999110003396

If you use this new version, which has non blocking MPI for much better performance for medium or large runs, please cite at least one of these five articles, in which results of 3D non blocking MPI runs are presented:

• Komatitsch, D.; Erlebacher, G.; Göddeke, D.; Michéa, D. (2010), High-order finite-element seismic wave propagation modeling with MPI on a large GPU cluster, Journal of Computational Physics, 229 (20), 7692-7714, doi: 10.1016/j.jcp.2010.06.024, url: http://linkinghub.elsevier.com/retrieve/pii/S0021999110003396
• Madec, R.; Komatitsch, D.; Diaz, J. (2009), Energy-conserving local time stepping based on high-order finite elements for seismic wave propagation across a fluid-solid interface, Computer Modeling in Engineering and Sciences (CMES), 14 (2), 163.
• Peter, D.; Komatitsch, D.; Luo, Y.; Martin, R.; Le Goff, N.; Casarotti, E.; Le Loher, P.; Magnoni, F.; Liu, Q.; Blitz, C.; Nissen-Meyer, T.; Basini, P.; Tromp, J. (2011), Forward and adjoint simulations of seismic wave propagation on fully unstructured hexahedral meshes: SPECFEM3D Version 2.0 'Sesame', Geophysical Journal International, 186 (2), 721-739, doi: 10.1111/j.1365-246X.2011.05044.x, url: http://gji.oxfordjournals.org/cgi/doi/10.1111/j.1365-246X.2011.05044.x
• Komatitsch, D. (2011), Fluid-solid coupling on a cluster of GPU graphics cards for seismic wave propagation, Comptes Rendus Mécanique, 339 (2-3), 125-135, doi: 10.1016/j.crme.2010.11.007, url: http://linkinghub.elsevier.com/retrieve/pii/S1631072110002081

If you work on geophysical applications, you may be interested in citing some of these application articles as well, among others:

• van Wijk, K.; Komatitsch, D.; Scales, J.A.; Tromp, J. (2004), Analysis of strong scattering at the micro-scale, The Journal of the Acoustical Society of America, 115 (3), 1006, doi: 10.1121/1.1647480, url: http://scitation.aip.org/content/asa/journal/jasa/115/3/10.1121/1.1647480
• Ji, C. (2005), Rayleigh-Wave Multipathing along the West Coast of North America, Bulletin of the Seismological Society of America, 95 (6) , 2115-2124, doi: 10.1785/0120040180, url: http://bssa.geoscienceworld.org/cgi/doi/10.1785/0120040180
• Krishnan, S. (2006), Case Studies of Damage to Tall Steel Moment-Frame Buildings in Southern California during Large San Andreas Earthquakes, Bulletin of the Seismological Society of America, 96 (4a), 1523-1537, doi: 10.1785/0120050145, url: http://www.bssaonline.org/cgi/doi/10.1785/0120050145
• Krishnan, S.; Ji, C.; Komatitsch, D.; Tromp, J. (2006), Performance of Two 18-Story Steel Moment-Frame Buildings in Southern California During Two Large Simulated San Andreas Earthquakes, Earthquake Spectra, 22 (4), 1035-1061, doi: 10.1193/1.2360698, url: http://earthquakespectra.org/doi/abs/10.1193/1.2360698
• Lee, S.-J.; Chen, H.-W.; Liu, Q.; Komatitsch, D.; Huang, B.-S.; Tromp, J. (2008), Three-Dimensional Simulations of Seismic-Wave Propagation in the Taipei Basin with Realistic Topography Based upon the Spectral-Element Method, Bulletin of the Seismological Society of America, 98 (1), 253-264, doi: 10.1785/0120070033, url: http://www.bssaonline.org/cgi/doi/10.1785/0120070033
• Lee, S.-J.; Chan, Y.-C.; Komatitsch, D.; Huang, B.-S.; Tromp, J. (2009), Effects of Realistic Surface Topography on Seismic Ground Motion in the Yangminshan Region of Taiwan Based Upon the Spectral-Element Method and LiDAR DTM, Bulletin of the Seismological Society of America, 99 (2a), 681-693, doi: 10.1785/0120080264, url: http://www.bssaonline.org/cgi/doi/10.1785/0120080264
• Lee, S.-J.; Komatitsch, D.; Huang, B.-S.; Tromp, J. (2009), Effects of Topography on Seismic-Wave Propagation: An Example from Northern Taiwan, Bulletin of the Seismological Society of America, 99 (1), 314-325, doi: 10.1785/0120080020, url: http://www.bssaonline.org/cgi/doi/10.1785/0120080020
• Chevrot, S.; Favier, N.; Komatitsch, D. (2004), Shear wave splitting in three-dimensional anisotropic media, Geophysical Journal International, 159 (2)  711-720, doi: 10.1111/j.1365-246X.2004.02432.x, url: http://gji.oxfordjournals.org/cgi/doi/10.1111/j.1365-246X.2004.02432.x
• Favier, N.; Chevrot, S.; Komatitsch, D. (2004), Near-field influence on shear wave splitting and traveltime sensitivity kernels, Geophysical Journal International, 156 (3), 467-482, doi: 10.1111/j.1365-246X.2004.02178.x, url: http://gji.oxfordjournals.org/cgi/doi/10.1111/j.1365-246X.2004.02178.x
• Ritsema, J.; McNamara, A.K.; Bull, A.L. (2007), Tomographic filtering of geodynamic models: Implications for model interpretation and large-scale mantle structure, Journal of Geophysical Research, 112 (B1), B01303, doi: 10.1029/2006JB004566, url: http://doi.wiley.com/10.1029/2006JB004566
• Godinho, L.; Amado Mendes, P.; Tadeu, A.; Cadena-Isaza, A.; Smerzini, C.; Sanchez-Sesma, F.J.; Madec, R.; Komatitsch, D. (2009), Numerical Simulation of Ground Rotations along 2D Topographical Profiles under the Incidence of Elastic Plane Waves, Bulletin of the Seismological Society of America, 99 (2b), 1147-1161, doi: 10.1785/0120080096, url: http://www.bssaonline.org/cgi/doi/10.1785/0120080096
• Tromp, J.; Komatitsch, D. (2000), Spectral-element simulations of wave propagation in a laterally homogeneous Earth model, Problems in Geophysics for the New Millennium, INGV, 351-372, Ingv.
• Savage, B.; Komatitsch, D.; Tromp, J. (2010), Effects of 3D Attenuation on Seismic Wave Amplitude and Phase Measurements, Bulletin of the Seismological Society of America, 100 (3), 1241-1251, doi: 10.1785/0120090263, url: http://www.bssaonline.org/cgi/doi/10.1785/0120090263
• Ritsema, J.; van Heijst, H.J.; Woodhouse, J.H. (1999), Complex shear wave velocity structure imaged beneath Africa and Iceland, Science, 286 (5446), 1925-1928, American Association for the Advancement of Science.

If you are not using a regular release, that is you have cloned from master on the github repository, we recommend that you make the following changes to the citation reference:

• substitute the download year, YYYY, for 9999
• substitute the git short hash for the doi: git: GITHASH8
• append the download date: downloaded on DD MON YYYY

For previous versions, please substitute the appropriate version number and year above.

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