About SPUD

SPUD Version 3.0

The Searchable Product Depository (SPUD) is the IRIS DMC's primary data product management system. Complementing the DMC's SEED and assembled data archives, which contain time series recordings, the SPUD system primarily contains derivative data products of other types (images, movies, etc.) created either at the DMC or by members of the community.

For users SPUD is the query and access point for these products. The web interfaces allow users to search for products using customized queries across product and event details. Users can search across all product types at once or within specific product types. SPUD also has web service interfaces for programmatic discovery and access to the data products.

If any products from SPUD are used in your research please be sure to cite the identified author of the product and the IRIS DMS [Citation Information].

About Earth Model Products

The Earth models presented here are contributed to the IRIS Earth Model Collaboration (EMC) by various researchers.

Two general types of model are available for download:

  • Tomography Models:
    The contributed Earth models in their original format and in a common netCDF (network Common Data Form). A model overview page provides a summary of the model.

  • Reference Models:
    Most EMC Earth models are expressed as perturbations relative to a particular reference 1-D model. These reference models are available for download in expanded comma separated value (CSV) file format with the first two lines representing the file’s header.

For model visualization and additional information about the models visit the IRIS EMC Product Page.

Citing Earth Model Products

If you use Earth Models in publications, please cite according to the instructions at:

Durand S., E. Debayle, Y. Ricard, C. Zaroli, S. Lambotte (2017), Confirmation of a change in the global shear velocity pattern at around 1,000 km depth, Geophys. J. Int., 211(3), 1628-1639

http://ds.iris.edu/ds/products/emc/#citation

When citing this Earth Model page please use the Digital Object Identifier (DOI):

doi:10.17611/DP/16588566

Earth Model Help

The page displays information for individual Earth Models.

The model information is summarized at the top including links to further information.
Model based on the joint inversion of normal modes and surface waves. icon
Model Summary
Name:  SEISGLOB2
Title:  Model based on the joint inversion of normal modes and surface waves.
Type: 3-D Tomography Earth Model
Sub Type:  Shear-wave velocity (%)
Year 2017
Author(s): Stephanie Durand
Institut fuer Geophysik
Muenster, Germany

Eric Debayle
LGL-TPE, CNRS
Villeurbanne, France

Yanick Ricard
LGL-TPE, CNRS
Villeurbanne, France

Christophe Zaroli
EOST
Strasbourg, France

Sophie Lambotte
EOST
Strasbourg, France
Reference(s): Durand S., E. Debayle, Y. Ricard, C. Zaroli, S. Lambotte (2017), Confirmation of a change in the global shear velocity pattern at around 1,000 km depth, Geophys. J. Int., 211(3), 1628-1639
DOI: doi:10.17611/DP/16588566
Depth Coverage: 50.0 - 2850.0 km
Areal Coverage: Latitude: -89.0 to 89.0 Longitude: -180.0 to 180.0
Model Description SEISGLOB2 is a global shear velocity tomographic model based on the joint inversion of S SS and ScS delay times, Rayleigh surface wave phase velocity perturbations and splitting and coupling coefficients of normal modes. It is parameterized laterally in spherical harmonics up to degree 40 and with 21 splines in depth (the same as in S40RTS (Ritsema et al. (2011))). The model values are in percent with respect to the reference model PREM (Dziewonski & Anderson (1981)).
EMC Page ds.iris.edu/ds/products/emc-seisglob2/
Model Data
DescriptionSizeModel
The netCDF binary for the above model expressed as shear velocity (%) 28.0 MB
Based On
TypeNameTitleReference
1D ReferencePREMPreliminary Reference Earth Model (PREM) Dziewonski and Anderson (1981)
Figure, SEISGLOB2 shear velocity perturbations (%) with respect to PREM at multiple depths. Green lines display the plate boundaries and the black circles the hotspots location.
Model Areal Coverage
Contributions