Summary
The second-generation Collaborative Seismic Earth Model (CSEM2) is a global, multi-scale Earth model developed using full-waveform inversion. This file contains the regional extraction of CSEM2 in Africa.
Quicklinks
Description
| Name | CSEM2_Africa |
| Title | Extraction of The 2nd Generation Collaborative Seismic Earth Model in Africa |
| Type | 3-D Tomography Earth Model |
| Sub Type | VSV, VSH, VPV, VPH, RHO |
| Year | 2024 |
| Data Version | v2024.12.01 (December 1st, 2024 – version history)) |
| Data Revision | r0.0 (revision history) |
| Short Description | The second-generation Collaborative Seismic Earth Model (CSEM2) is a global, multi-scale Earth model developed using full-waveform inversion. The term ‘multi-scale’ reflects the varying sizes of the inversion domains. CSEM2 integrates information from both global and regional inversions into a unified framework. This file contains the regional extraction of CSEM2 in Africa, where contributing submodels are by Colli et al. (2013), Fichtner et al. (2013), Fichtner and Villaseñor (2015), Blom et al (2020), van Herwaarden et al (2023) and Masouminia et al (2024). For user-specific domains and spatial resolution of CSEM2, please contact the author. This submodel has been extracted from the variable-parameterisation CSEM onto a regular grid, readable by EMC tools. |
| Authors: | Sebastian Noe, ETH Zurich, Zurich, Switzerland Dirk-Philip van Herwaarden, ETH Zurich, Zurich, Switzerland Solvi Thrastarson, ETH Zurich, Zurich, Switzerland Marta Pienkowska, ETH Zurich, Zurich, Switzerland Neda Masouminia, LMU Munich, Munich, Germany Jincheng Ma, LMU Munich, Munich, Germany Hans-Peter Bunge, LMU Munich, Munich, Germany Deborah Wehner, University of Cambridge, Cambridge, UK Nicholas Rawlinson, University of Cambridge, Cambridge, UK Yajian Gao, GFZ Potsdam, Potsdam, Germany Frederik Tilmann, GFZ Potsdam, Potsdam, Germany Artie Rodgers, Lawrence Livermore National Laboratory, Livermore, CA, USA Andreas Fichtner, ETH Zurich, Zurich, Switzerland |
| Previous Model | None |
| Reference Model | None |
| Model Home Page | https://cos.ethz.ch/models.html |
| Model Download | CSEM2-Africa.v2024.12.01.r0.0-n4.nc (see metadata) is the model in compressed netCDF 4 Classic format. |
| Depth Coverage | 0 to 1200 km |
| Area | Global, latitude: -54.0°/46.0° @2.0°, longitude: -28.0°/62.0° @2° |
| Data Set Description | CSEM2 is a model built on many submodels that have been separately published. Therefore, the data set is complex. For details, please see Noe et al. (2024). |
Citations and DOIs
To cite the original work behind this Earth model:
- Noe, S., van Herwaarden, D.-P., Thrastarson, S., Pienkowska, M., Masouminia, N., Ma, J., Bunge, H.-P., Wehner, D., Rawlinson, N., Gao., Y., Tilmann, F., Rodgers, A., and Fichtner, A. (2024), The Collaborative Seismic Earth Model: Generation 2, JGR Solid Earth, 129(12), https://doi.org/10.1029/2024JB029656
To cite IRIS DMC Data Products effort:
- Trabant, C., A. R. Hutko, M. Bahavar, R. Karstens, T. Ahern, and R. Aster (2012), Data Products at the IRIS DMC: Stepping Stones for Research and Other Applications, Seismological Research Letters, 83(5), 846–854, https://doi.org/10.1785/0220120032.
DOI for this EMC webpage: https://doi.org/10.17611/dp/emc.2025.csem2.africa.1
To cite submodels that contributed to this region in CSEM2:
- Blom, N., Gokhberg, A., and Fichtner, A. (2020). Seismic waveform tomography of the central and eastern. Mediterranean upper mantle. Solid Earth, 11(2):669–690.
- Colli, L., Fichtner, A., and Bunge, H.-P. (2013). Full waveform tomography of the upper mantle in the South Atlantic region: Imaging a westward fluxing shallow asthenosphere? Tectonophysics, 604:26–40.
- Fichtner, A., Trampert, J., Cupillard, P., Saygin, E., Taymaz, T., Capdeville, Y., and Villasenor, A. (2013). Multiscale full waveform inversion. Geophysical Journal International, 194(1):534–556.
- Fichtner, A. and Villaseñor, A. (2015). Crust and upper mantle of the western Mediterranean–constraints from full-waveform inversion. Earth and Planetary Science Letters, 428:52–62.
- Masouminia, N., van Herwaarden, D.-P., Thrastarson, S., Rahimi, H., Igel, H., Krischer, L., Afanasiev, M., Boehm, C., and Fichtner, A. (2024). First generation of a three-dimensional tomographic model for the uppermost mantle beneath the Zagros collision zone—constraints from full-waveform inversion. Acta Geophysica, 1–14.
- van Herwaarden, D.-P., Thrastarson, S., Hapla, V., Afanasiev, M., Trampert, J., and Fichtner, A. (2023). Full-waveform tomography of the African plate using Dynamic Mini-Batches. Journal of Geophysical Research: Solid Earth, 128(6), e2022JB026023.
Credits
- v2024.12.01 r0.0 model provided by Sebastian Noe, ETHZ Zurich, Zurich, Switzerland.
h2. Revision History
version v2024.12.01, revision r0.0: uploaded April 3, 2025.
