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:

Porritt, R.W., R.M. Allen, D.C. Boyarko , and M.R. Brudzinski. 2011. "Investigation of Cascadia segmentation with ambient noise tomography." Earth and Planetary Science Letters, 309(1-2), 67-76, ISSN 0012-821X, DOI: 10.1016/j.epsl.2011.06.026.

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/9894887

Earth Model Help

The page displays information for individual Earth Models.

The model information is summarized at the top including links to further information.
3D S-wave tomography Earth model for the Cascadia Subduction Zone (Inactive) icon
Model Summary
Name:  PNW10-S
Title:  3D S-wave tomography Earth model for the Cascadia Subduction Zone
Type: 3D Tomography
Sub Type:  S velocity perturbation (%)
Year 2010
Author(s): Robert W. Porritt
Department of Earth and Planetary Science
University of California, Berkeley
California, USA

Richard M. Allen
Department of Earth and Planetary Science
University of California, Berkeley
California, USA

Devin C. Boyarko
Department of Geology
Miami University
Ohio, USA

Michael R. Brudzinski
Department of Geology
Miami University
Ohio, USA
Reference(s): Porritt, R.W., R.M. Allen, D.C. Boyarko , and M.R. Brudzinski. 2011. "Investigation of Cascadia segmentation with ambient noise tomography." Earth and Planetary Science Letters, 309(1-2), 67-76, ISSN 0012-821X, DOI: 10.1016/j.epsl.2011.06.026.
DOI: doi:10.17611/DP/9894887
Depth Coverage: 0.0 - 100.0 km
Areal Coverage: Latitude: 38.2 to 49.0 Longitude: -124.2 to -119.0
Model Description S-velocity model of the Cascadia Subduction Zone using Ambient Seismic Noise Tomography. This model focuses on the US Pacific Northwest to address a series of questions relating to variations in arc volcanism, seismicity, tremor activity, and the relation to subduction complex structure.
Data Set Description [ Porritt et al. (2011) ] While our dataset focuses on two Flexible Array Experiment (FACES and Mendocino Broadband) more than 1200 stations where used from the USArray transportable array, regional seismic networks, and temporary seismic deployments. Phase velocities measured from inter-station paths with a Frequency-Time Analysis procedure to prepare period dependent maps.
Web Page seismo.berkeley.edu/~rallen/research/dna/pnw10
EMC Page ds.iris.edu/ds/products/emc-pnw10-s
Model Data
DescriptionSizeModel
gzip tar of the above model in its original format. 965.5 KB
the netCDF binaries for the above model (S velocity perturbations). 928.2 KB
the netCDF binaries for the above model (S velocity in km/s). 928.2 KB
Model URLs
URLDescription
http://seismo.berkeley.edu/~rallen/research/dna/pnw10/downloadoriginal model files from the model download page
Figure below, Porritt et al. (2011) , is a comparison of PNW10-S with characteristics of ETS.
Model Areal Coverage
Contributions