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:

Grand, S. P. 2002. "Mantle Shear-Wave Tomography and the Fate of Subducted Slabs." Phil. Trans. R. Soc. Lond. 360:2475-2491.

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/10131209

Earth Model Help

The page displays information for individual Earth Models.

The model information is summarized at the top including links to further information.
A global mantle shear-wave tomography icon
Model Summary
Name:  TX2000
Title:  A global mantle shear-wave tomography
Type: 3D Tomography
Sub Type:  S velocity
Year 2000
Author(s): Stephen P. Grand
Department of Geological Sciences
The University of Texas, Austin Texas
Reference(s): Grand, S. P. 2002. "Mantle Shear-Wave Tomography and the Fate of Subducted Slabs." Phil. Trans. R. Soc. Lond. 360:2475-2491.
DOI: doi:10.17611/DP/10131209
Depth Coverage: 60.0 - 2800.0 km
Areal Coverage: Latitude: -90.0 to 90.0 Longitude: -180.0 to 180.0
Model Description TX2000 (also known as Grand2000) refers here to the TXBW Grand (2002) model to distinguish it from the TXBW Grand, van der Hilst and Widiyantoro (1997) model. The model is derived from the shear body wave travel times and aims at providing a more uniform global coverage of the mantle and more information on upper-mantle seismic structure by using multibounce shear waves, core-reflected waves and SKS and SKKS waves that travel through the core in its analysis.
Data Set Description The data used to derive the model consist of arrive times of several different seismic phases. Earthquake locations were taken from ISC with depth determination based on the S and sS time differences. The seismograms used came from WSSN and Canadian network for older events and more recent seismograms came from a number of global and regional networks (IRIS GSN, GEOSCOPE, MedNet, CNSN and temporary PASSCAL deployments).
Web Page www.jsg.utexas.edu/researcher/stephen_grand
EMC Page ds.iris.edu/ds/products/emc-tx2000
Model Data
DescriptionSizeModel
Model on a 4°x4° grid for depths from 60 to 2800 km at non-uniform intervals in netCDF format. 578.6 KB
[Grand (2000)] Model at various depths using different color scales, (a) 0-100 km; (b) 250-325 km; (c) 525-650 km; (d) 750-850 km; (e) 1150-1300 km; (f) 1600-1750 km; (g) 2200-2350 km and (h) 2650-2890 km.
Model Areal Coverage
Contributions