Data Services Products: EMC-DNA13 P- and S-velocity models for the western US integrating body- and surface-wave constraints


DNA13 model, Porritt, Allen, & Pollitz (2014), provides three independent body-wave derived estimates of the wave-speed for the contiguous US. Teleseismic and ambient noise derived phase velocities are utilized in a joint inversion with the SV component body waves.


Name DNA13
Title P- and S-velocity models for the western US integrating body- and surface-wave constraints
Type 3-D Tomography Earth Model
Sub Type P and S velocity perturbations(%)
Year 2014
Short Description   The DNA13 model integrates teleseismic body-wave traveltime and surface-wave phase velocity measurements into a single inversion to constrain the P- and S-wave velocity structure beneath the contiguous US (from the Pacific coast to ~70° W, from Mexico to Canada).
Robert Porritt
  Department of Earth and Planetary Science
  University of California, Berkeley (now at University of Southern California)
  California, USA
Richard M. Allen
  Department of Earth and Planetary Science
  University of California, Berkeley
  California, USA
Fred Pollitz
  US Geological Survey
  Menlo Park, CA, USA
Previous Model This model is derived via the same methodology as DNA09 and DNA10-S, but the input dataset is independent from previous models.
Reference Model N/A
Model Download
original model files from the model download page (see metadata ), is the netCDF file for the model
Model Homepage
Depth Coverage 0 to 1280km (best resolution 0 to 1000km)
Area (P, SH, and SV) contiguous United States (25°/52°, -126°/-72°)
  (SV-Joint) contiguous United States (25°/52°, -126°/-90°)
Data Set Description [ Porritt et al. (2014) ] The station distribution used in this study covers all of the contiguous United States. This includes more than 2200 stations from the USArray transportable array, regional seismic networks, and temporary seismic deployments. Data were recorded from 2007 January to 2012 December. Relative traveltimes of teleseismic body waves (P, SV, and SH) obtained from about 400 earthquakes, surface wave phase velocity measurements from 167 eartqhuakes, and 5 years of ambient noise data were used to constrain the model.
Supplemental Information The supplemental information page for this model contains information on resolution, phase ray and velocity as well as uncertainties for this model.

DNA13-SV-J velocity perturbation at 4 depths
Figure 4, Porritt et al. (2014) , shows model DNA13-SV-J velocity perturbation at 4 depths

Citations and DOIs

To cite the original work behind this Earth model:

To cite IRIS DMC Data Products effort:

  • 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 Applications, Seismological Research Letters, 83(5), 846–854,

DOI for this EMC webpage:


Model provided by Robert Porritt





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