Summary
EARA2024 is a new radially anisotropic seismic velocity model for the crust and upper mantle beneath east asia and northwestern pacific subduction zones.
Quicklinks
Description
| Name | EARA2024 |
| Title | Full-waveform tomography model of East Asia (EARA2024) |
| Type | 3-D Tomography Earth Model |
| Sub Type | Radial anisotropic (in the crust and upper mantle) P and S velocities |
| Year | 2024 |
| Data Revision | r0.0 (revision history) |
| Short Description | EARA2024 is a new radially anisotropic seismic velocity model for the crust and upper mantle beneath east asia and northwestern pacific subduction zones. |
| Authors: | Ziyi Xi (xiziyi@msu.edu), Department of Computational Mathematics, Science and Engineering, Michigan State University, East Lansing, MI, USA Min Chen, Department of Computational Mathematics, Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Earth and Environmental Sciences, Michigan State University, East Lansing, MI, USA Songqiao Shawn Wei (swei@msu.edu), Department of Earth and Environmental Sciences, Michigan State University, East Lansing, MI, USA; Department of Computational Mathematics, Science and Engineering, Michigan State University, East Lansing, MI, USA Jiaqi Li, Department of Computational Mathematics, Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Earth and Environmental Sciences, Michigan State University, East Lansing, MI, USA Tong Zhou, Department of Computational Mathematics, Science and Engineering, Michigan State University, East Lansing, MI, USA Baoshan Wang, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China; Mengcheng National Geophysical Observatory, University of Science and Technology of China, Hefei, China YoungHee Kim, School of Earth and Environmental Sciences, Seoul National University, Seoul, Republic of Korea |
| Reference Model | In the crust, we utilize CRUST1.0, and in the mantle, we use STW105 during the inversion process. This approach allows us to focus on updating model perturbations rather than absolute model parameter values. For plotting and final illustration purposes, we employ the EARA2024_AVG, an averaged 1D model derived from EARA2024, which is provided by the _ref parameters in the model file. |
| Prior Model | EARA2014 doi: 10.1002/2014JB011638 |
| Model Download | EARA2024.r0.0.nc (see metadata) is the model in netCDF 3 Classic format. EARA2024.r0.0-n4.nc (see metadata) is the model in netCDF 4 Classic format. |
| Model Home Page | None |
| Depth Coverage | 0 to 1000 km |
| Area | East Asia (10° N to 60° N and 80° E to 160° E) |
| Data Set Description | We present a new 3-D radially anisotropic seismic velocity model EARA2024 of the crust and mantle beneath East Asia and the northwestern Pacific using adjoint full-waveform inversion tomography. We construct the EARA2024 model by iteratively minimizing the waveform similarity misfit between the synthetic and observed waveforms from 142 earthquakes recorded by about 2,000 broadband stations in East Asia. Compared to previous studies, this new model renders significantly improved images of the subducted oceanic plate in the upper mantle, mantle transition zone, and uppermost lower mantle along the Kuril, Japan, Izu-Bonin, and Ryukyu Trenches. Complex slab deformation and break-offs are observed at different depths. Moreover, our model provides new insights into the origins of intraplate volcanoes in East Asia, including the Changbaishan, Datong-Fengzhen, Tengchong, and Hainan volcanic fields. |
Citations and DOIs
To cite the original work behind this Earth model:
- Ziyi Xi, Min Chen, Songqiao Shawn Wei, Jiaqi Li, Tong Zhou, Baoshan Wang, YoungHee Kim, EARA2024: A New Radially Anisotropic Seismic Velocity Model for the Crust and Upper Mantle beneath East Asia and Northwestern Pacific Subduction Zones, Geophysical Journal International, 2024;, ggae302, https://doi.org/10.1093/gji/ggae302
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.2024.eara2024.1
References
- Hayes, G. P., Moore, G. L., Portner, D. E., Hearne, M., Flamme, H., Furtney, M., & Smoczyk, G. M., 2018. Slab2, a comprehensive subduction zone geometry model, Science, 362(6410), 58–61. https://doi.org/10.1126/science.aat4723
- DeMets, C., Gordon, R. G., Argus, D. F., & Stein, S., 1990. Current plate motions, Geophysical Journal International, 101(2), 425–478. https://academic.oup.com/gji/article/101/2/425/561883
Credits
- r0.0 model provided by Ziyi Xi.
Revision History
revision r0.0: uploaded August 29, 2024.
Timeline
- 2024-08-29
- r0.0 online
