Summary
IBEM-P18 and IBEM-S19 are the teleseismic travel-time body- and shear-wave velocity models of the Iberowestern Maghreb region.
Quicklinks
Description
| Name | IBEM-P18+IBEM-S19 |
| Title | Teleseismic travel-time body- and shear-wave velocity models of the Ibero-western Maghreb region |
| Type | 3-D Tomography Earth Model |
| Sub Type | P- and S-wave velocity |
| Year | 2018, 2019 |
| Short Description | 3-D P- and S-velocity models (respectively IBEM-P18 and IBEM-S19) of the crust, upper and uppermost mantle beneath Iberia, Canaries and Western Morocco. Relative arrival-time residuals of teleseismic P, S and SKS phases are used to invert for perturbations in the mantle. The data set used includes travel-times recorded between 2007 and 2013, from 18 seismic experiments (~416 regional stations). The IBEM-P18 and IBEM-S19 models are expressed as the velocity difference in km/s relative to the 1D averaged regional model PRISM3D (0-660 km depth) and global model LLNL (660-800 km depth). |
| Authors: | |
| Chiara Civiero | |
| Dublin Institute for Advanced Studies | |
| Dublin, Ireland | |
| Susana Custódio, Graça Silveira, Carlos Corela | |
| Instituto Dom Luiz | |
| Faculdade de Ciências, Universidade de Lisboa | |
| Lisbon, Portugal | |
| Nicholas Rawlinson | |
| Department of Earth Sciences – Bullard Laboratories | |
| University of Cambridge | |
| Cambridge, UK | |
| Vincent Strak | |
| Department of Earth Sciences | |
| Vrije Universiteit Amsterdam | |
| Amsterdam, Netherlands | |
| Pierre Arroucau | |
| EDF/DIPNN/DI/TEGG/SGG | |
| Groupe Aléa Sismique | |
| Aix-en-Provence, France | |
| Previous Model | None |
| Reference Model | PRISM3D (Arroucau et al., 2017, Arroucau et al., in preparation)and LLNL (Simmons et al., 2012). |
| Model Download | IBEM-P18.nc (metadata ), is the netCDF file for the model IBEM-S19.nc (metadata ), is the netCDF file for the model |
| Model Homepage | |
| Depth Coverage | Crust, upper mantle and uppermost lower mantle (0 to 800 km) |
| Area | Iberia, Canaries and Western Morocco (26°/46°, -19°/5°) |
| Data Set Description | Broadband teleseismic travel-time data from around 416 seismic stations (18 seismic experiments and permanent networks operating in the time range 2007-2013) are used in this work. |
| Supplemental Information |
between 130 and 730 km (modified from Civiero et al., 2018 and
Civiero et al., 2019). Velocities are plotted relative to a 1D laterally
averaged depth-dependent version of the starting models. Regions
with no piercing points are shaded grey. Black lines show coastlines.
Note in both the models the prominent high-velocity anomaly below
the Alboran Sea surrounded by low-velocity anomalies below Rif and Betics.
Citations and DOIs
To cite the original work behind this Earth model:
- Civiero, C., Strak, V., Custódio, S., Silveira, G., Rawlinson, N., Arroucau, P., & Corela, C. (2018). A common deep source for upper-mantle upwellings below the Ibero-western Maghreb region from teleseismic P-wave travel-time tomography. Earth and Planetary Science Letters, 499, 157–172. https://doi.org/10.1016/j.epsl.2018.07.024
- Civiero, C., Custódio, S., Rawlinson, N., Strak, V., Silveira, G., Arroucau, P., & Corela, C. (2019). Thermal nature of mantle upwellings below the Ibero-western Maghreb region inferred from teleseismic tomography. Journal of Geophysical Research: Solid Earth, 124. https://doi.org/10.1029/2018JB016531
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/emcibemp18s19
References
- Arroucau, P., Custódio, S., Civiero, C., Dias, N.A., Silveira, G., 2017. PRISM3D: a preliminary 3D reference seismic model of the crust and upper mantle beneath Iberia. Geophys. Res. Abstr. 19, EGU2017-16801.
- Arroucau, P., Custódio, S., Civiero, C., Dias, N.A., Silveira, G., Diaz, J., Villaseñor, A., in preparation. PRISM3D: a preliminary reference seismic model for Iberia and adjacent areas. Geophysical Journal International.
- Simmons, N.A., Myers, S.C., Johannesson, G., Matzel, E., 2012. LLNL-G3Dv3: global P wave tomography model for improved regional and teleseismic travel time pre- diction. J. Geophys. Res., Solid Earth 117. https://doi.org/10.1029/2012JB009525.
Credits
- Model provided by Chiara Civiero
Timeline
- 2019-10-25
- online
