Summary
GyPSuM, Simmons, Forte, Boschi & Grand (2010) , is a tomographic model of mantle seismic wave speeds developed through simultaneous inversion of seismic body wave travel times and geodynamic observations.
Quicklinks
Description
| Name | GyPSuM |
| Title | A global 3-D model of mantle shear wave (S) and compressional (P) speeds |
| Type | 3-D Tomography Earth Model |
| Sub Type | P & S velocities |
| Year | 2010 |
| Short Description | GyPSuM is a tomographic model of mantle seismic wave speeds developed through simultaneous inversion of seismic body wave travel times and geodynamic observations. |
| Authors: | |
| Nathan A. Simmons | |
| Atmospheric, Earth and Energy Division | |
| Lawrence Livermore National Laboratory | |
| Livermore, California, USA | |
| Alessandro M. Forte | |
| GEOTOP, Departement des Sciences de la Terre et de l’Atmosphere | |
| Universite du Quebec | |
| Montreal, Montreal, Quebec, Canada | |
| Lapo Boschi | |
| Eidgenossische Technische Hochschule Honggerberg | |
| Institute of Geophysics, Zurich, Switzerland | |
| Stephen P. Grand | |
| Jackson School of Geosciences | |
| University of Texas at Austin | |
| Austin, Texas, USA | |
| Previous Model | |
| Reference Model | The reference P-wave model is the 1-s, isotropic equivalent PREM [Table II of Dziewonski and Anderson (1981) ]. The S-wave model is based on the averaged TNA/SNA model. |
| Model Download | |
| One-degree gridded version of the model zip file (~8.8 MB) includes all necessary model files. | |
| The above model expressed as percent P- & S- velocity perturbations: GYPSUM_percent.nc (see metadata ), is the netCDF file for the model |
|
| The P-wave velocity for the above model expressed in km/s: GYPSUMP_kmps.nc (see metadata ), is the netCDF file for the model |
|
| The S-wave velocity for the above model expressed in km/s: GYPSUMS_kmps.nc (metadata ), is the netCDF file for the model |
|
| Model Homepage | |
| Depth Coverage | 0 to 2900 km |
| Areal Coverage | Global (-90°/90°, -180°/180°) |
| Data Set Description | The seismic data used consist of globally distributed, teleseismic S wave and P wave travel time observations that are not restricted to common source-receiver pairs. The geodynamic data includes the free air gravity field from the EGM96 geopotential model. |
Citations and DOIs
To cite the original work behind this Earth model:
- Simmons, N.A., A.M. Forte, L. Boschi, and S.P. Grand. 2010. “GyPSuM: A joint tomographic model of mantle density and seismic wave speeds.” J. Geophys. Res. 115:B12310. https://doi.org/10.1029/2010JB007631.
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:
Credits
Model provided by Nathan A. Simmons
Timeline
- 2011-09-20
- GyPSuM tomography model online
- 2015-01-07
- Unified depths of the GyPSuM kmps models.
