Data Services Products: EMC-GLAD-M25 Global adjoint tomography

Summary

GLAD-M25 is an elastic model with radial anisotropy confined to the upper mantle, similar to its predecessor GLAD-M15. The 1-D reference model is STW105.

Description

Name GLAD-M25
Title Global adjoint tomography
Type 3-D Tomography Earth Model
Sub Type Anisotropic (in the uppermost mantle)
Year 2020
Data Revision r.0.0 (revision history)
 
Short Description   GLAD-M25 is an elastic model with radial anisotropy confined to the upper mantle, similar to its predecessor GLAD-M15. The 1-D reference model is STW105.
 
Authors: Wenjie Lei:
Department of Geosciences
Princeton University
Princeton, USA

Youyi Ruan:
Department of Geosciences
Princeton University
Princeton, USA

Ebru Bozdağ:
Department of Geophysics
Colorado School of Mines
Golden, USA

Daniel Peter:
Extreme Computing Research Center
King Abdullah University of Science and Technology (KAUST)
Thuwal, Kingdom of Saudi Arabia

Matthieu Lefebvre:
Department of Geosciences
Princeton University
Princeton, USA

Dimitri Komatitsch:
LMA
Aix-Marseille University
Centrale Marseille, France

Jeroen Tromp:
Department of Geosciences
Princeton University
Princeton, USA

Judith Hill:
Oak Ridge National Laboratory
Oak Ridge, USA

Norbert Podhorszki:
Oak Ridge National Laboratory
Oak Ridge, USA

David Pugmire:
Oak Ridge National Laboratory
Oak Ridge, USA
 
Author of parametrization: Caio Ciardelli:
Department of Geophysics
Institute of Astronomy, Geophysics and Atmospheric Sciences – USP
São Paulo, Brazil
 
Previous Model GLAD-M15
Reference Model STW105
Model Download
 
Usage Notes   SphGLLTools (Ciardelli et al., 2021) is a toolbox for visualization, processing, sharing, and spherical harmonics analysis of tomographic models defined on GLL meshes that could be used with the full-resolution model.
 
Model Homepage https://github.com/caiociardelli/gladm25
Depth Coverage Whole Mantle (25 to 2890 km)
Area Global (latitudes: -90°/90°, longitudes: -180°/180°)
 
Data Set Description 1,480 earthquakes selected from the global CMT catalogue catalog, and whose waveforms we downloaded from many data centers, including IRIS, ORFEUS, INGV, IPGP, ETH, and GEONET. Global Seismic Network (II, IU, IC, US, CU, and GT), GEOFON (GE), GEOSCOPE (G), regional and temporary networks, such as US Array (TA), Africa Array (AF), the Canadian National Seismograph Network (CN), Geoscience Australia (AU), the Antarctic Seismographic Argentinean Italian Network (AI), the New Zealand National Seismograph Network (NZ), and the F-net broadband seismograph network by NIED, MedNet (MN), the Brazilian Lithospheric Seismic Project (BL), the Chilean National Seismic Network©, and the Japan Meteorological Agency Seismic Network (JP).

Map view of vertically polarized shear-wave-speed
Figure modified from Lei et. al, 2020: Map view of vertically polarized shear-wave-speed perturbations in GLAD-M25 underneath Iceland at a depth of 250 km (top). Also shown are a vertical cross-section at the same location (bottom). As a primary hotspot, Iceland also becomes more prominent, especially in the upper mantle.

Citations and DOIs

To cite the original work behind this Earth model:

  • Lei, W., Ruan, Y., Bozdağ, E., Peter, D., Lefebvre, M., Komatitsch, D., Tromp, J., Podhorszki, N., Pugmire, D., 2020. Global adjoint tomography—model glad-m25. Geophysical Journal International 223, 1–21, https://doi.org/10.1093/gji/ggaa253.

To cite the model parametrization effort: *Ciardelli, C., Bozdağ, E., Peter, D., & Van der Lee, S. (2022). SphGLLTools: A toolbox for visualization of large seismic model files based on 3D spectral-element meshes. Computers & Geosciences, 159, 105007, https://doi.org/10.1016/j.cageo.2021.105007

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.2020.gladm2500.1

References

  • Ciardelli, C., Bozdağ, E., Peter, D., and van der Lee, S., 2021. SphGLLTools: A toolbox for visualization of large seismic model files based on 3D spectral-element meshes. Computer & Geosciences, v. 159, 105007, https://doi.org/20.1016/j.cageo.2021.105007.

Credits

  • r.0.0 model provided by Ebru Bozdağ & Caio Ciardelli.

Revision History

revision r.0.0: uploaded October 29, 2020.

Timeline

2022-05-23
online

Categories

05:58:59 v.d6084d45