Data Services Products: EMC-IBEM-P18+IBEM-S19 Teleseismic travel-time body- and shear-wave velocity models of the Iberowestern Maghreb region

Summary

IBEM-P18 and IBEM-S19 are the teleseismic travel-time body- and shear-wave velocity models of the Iberowestern Maghreb region.

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)
Areal Coverage 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

Depth slices through the tomographic models.
Depth slices through the tomographic P- (a-f) and S-wave (g-l) models
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

Categories

Page built 06:51:42 | v.8ffa3d95