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 Models

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 either:

The corresponding Earth model reference from the Model Summmary section of the model's detail page.

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 application, Seismological Research Letters, 83(6), 846:854. doi: 10.1785/0220 120032

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  • All
  • Reference
  • Tomography
Query Results: 34 items found
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TypeModel NameTitleReference
1D ReferenceTNA/SNAAverage of the TNA and SNA models Grand and Helmberger (1984)
1D ReferenceSTW105A 1D Reference Earth Model Kustowski, Ekstrom and Dziewonski (2008)
3D TomographyDNA093D P- & S-velocity tomography Earth model Obrebski, Allen, Xue & Hung (2010)
3D TomographyDNA10-S3D S-wave tomography Earth model Obrebski, Allen, Pollitz & Hung (2011)
3D TomographyGyPSuMA global 3-D model of mantle shear wave (S) and compressional (P) speeds Simmons, Forte, Boschi & Grand (2010)
3D TomographyHMSL-P06A global compressional velocity model of the mantle HouserMasters, Shearer & Laske (2008)
3D TomographyHMSL-S06A global shear velocity model of the mantle HouserMasters, Shearer & Laske (2008)
3D TomographyNA04N. American upper mantle surface wave tomography van der Lee and Frederiksen (2005)
3D TomographySAW642ANGlobal radially anisotropic mantle S velocity Panning and Romanowicz (2006)
3D TomographyNA07N. American upper mantle surface wave tomography Bedle and van der Lee (2009)
3D TomographyNWUS11-P3D P-wave tomography model for NW United States James, Fouch, Carlson & Roth (2011)
3D TomographyNWUS11-S3D S-wave tomography model for NW United States James,Fouch, Carlson & Roth. (2011)
3D TomographyPNW10-S3D S-wave tomography Earth model for the Cascadia Subduction Zone Porritt, Allen, Boyarko & Brudzinski (2011)
3D TomographySAW24B16A global shear velocity structure of the mantle Megnin and Romanowicz (2000)
3D TomographySAW642ANbGlobal radially anisotropic mantle S velocity Panning, Lekic and Romanowicz (2010)
3D TomographyTX2000A global mantle shear-wave tomography Grand (2002)
3D TomographyTX2011A global mantle shear-wave tomography model Grand (2002)
3-D Regional Electrical Conductivity ModelSRPY-MTRegional 3-D electrical conductivity model of Snake River Plain / Yellowstone, USA based on magnetotelluric data Kelbert, Egbert, and deGroot-Hedlin (2012)
3D TomographyS362ANIA global model of shear-wave velocities Kustowski, Ekstrom and Dziewonski (2008)
3D TomographyS362WMANIA global model of shear-wave velocities Kustowski, Ekstrom and Dziewonski (2008)
3D TomographyS2.9EAA global model with higher resolution in the upper mantle beneath Eurasia calculated using STW105 as the 1-D reference model. Kustowski, Ekstrom and Dziewonski (2008A)
3D TomographywUS-SH-2010P and S teleseismic body-wave tomography of the western United States Schmandt and Humphreys (2010)
3D full-waveform Earth ModelSEMumA high-resolution global shear velocity model of upper mantle Lekic and Romanowicz (2011)
3D Q ModelQRLW8A global upper mantle shear attenuation model Gung and Romanowicz (2004)
3D TomographyLLNL-G3Dv3A global P wave tomography model based on regional and teleseismic travel times Simmons, Myers, Johannesson & Matzel (2012)
1D ReferenceAK135-Fak135-F spherical average model Kennett, Engdahl & Buland (1995); Montagner & Kennett (1995)
1D ReferenceIASP91iasp91 velocity model Kennett and Engdahl (1991)
1D ReferenceMC35A 1D modified PEM-C S velocity model van der Lee and Nolet (1997)
1D ReferencePEMParametric Earth Models (PEM) Dziewonski, Hales and Lapwood (1975)
1D ReferencePREMPreliminary Reference Earth Model (PREM) Dziewonski and Anderson (1981)
1D ReferencePREM500Modified PREM (Preliminary Reference Earth Model) Panning and Romanowicz (2006)
3D TomographyDNA13P- and S-velocity models for the western US integrating body- and surface-wave constraints Porritt, Allen, & Pollitz (2014)
3D full-waveform Earth ModelSAWum-NA2A high-resolution North American shear velocity model of upper mantle Yuan and Romanowicz (2011)
3D Tomography Earth ModelCASCADE.ANT.GAO-SHEN.20143D shear-wave velocity model of the Cascades from full-wave ambient noise tomography Gao and Shen (2014)
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