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:

Pasyanos, M.E., T.G. Masters, G. Laske, and Z. Ma (2014). LITHO1.0: An updated crust and lithospheric model of the Earth, J. Geophys. Res., 119 (3), 2153-2173, https://doi.org/10.1002/2013JB010626.

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/18377075

Earth Model Help

The page displays information for individual Earth Models.

The model information is summarized at the top including links to further information.
An updated crust and lithospheric model of the Earth icon
Model Summary
Name:  LITHO1.0
Title:  An updated crust and lithospheric model of the Earth
Type: Lithospheric Earth Model
Sub Type: 
Year 2014
Author(s): Mike Pasyanos
Atmospheric, Earth, and Energy Division
Lawrence Livermore National Laboratory
Livermore, CA, USA

Guy Masters
IGPP, Scripps Institution of Oceanography
U.C. San Diego
La Jolla, CA, USA

Gabi Laske
IGPP, Scripps Institution of Oceanography
U.C. San Diego
La Jolla, CA, USA

Zhitu Ma
Department of Earth and Planetary Sciences (formerly at IGPP)
Harvard University
Cambridge, Massachusetts, USA
Reference(s): Pasyanos, M.E., T.G. Masters, G. Laske, and Z. Ma (2014). LITHO1.0: An updated crust and lithospheric model of the Earth, J. Geophys. Res., 119 (3), 2153-2173, https://doi.org/10.1002/2013JB010626.
DOI: doi:10.17611/DP/18377075
Depth Coverage: -5.0 - 320.0 km
Areal Coverage: Latitude: -90.0 to 90.0 Longitude: -180.0 to 180.0
Model Description The LITHO1.0 model (Pasyanos, Masters, Laske & Ma, 2014), is a 1° tessellated model of the crust and uppermost mantle of the earth, extending into the upper mantle to include the lithospheric lid and underlying asthenosphere. The model is parameterized laterally by tessellated nodes and vertically as a series of geophysically identified layers, such as water, ice, sediments, crystalline crust, lithospheric lid, and asthenosphere. LITHO1.0 was created by constructing an appropriate starting model, including CRUST1.0 as starting model for the crust. We then perturbed the model to fit high-resolution surface wave dispersion maps (Love, Rayleigh, group, phase) over a wide frequency band (5-40 mHz).
Data Set Description
Web Page https://igppweb.ucsd.edu/~gabi/litho1.0.html
EMC Page ds.iris.edu/ds/products/emc-litho10/
Model Data
DescriptionSizeModel
The netCDF binary containing model parameters. 42.3 MB
[Pasyanos et al., 2014] LITHO1.0 model shown at tessellation level 5. Globes indicate values for several key parameters: (a) the average crustal compressional wave velocity, (b) crustal thickness, (c) upper mantle compressional wave velocity, and (d) lithospheric thickness.
Model Areal Coverage
Contributions