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The model is provided on a regular grid as an ascii file. Included in the compressed tar file are also README files, color pallets and a run script to view the model with the KeckCaves 3DVisualizer software.

The following README is included:

DNA09 - Finite-frequency P- and S-velocity models for the western US

Archive available from http://dna.berkeley.edu
Questions or problems: email Richard Allen - rallen@berkeley.edu
This model is described in Obrebski, M., R.M. Allen, M. Xue, S.-H. Hung. Slab-Plume Interaction beneath the Pacific Northwest Geophys. Res. Lett. 2010


Content of this download archive

	- this file
	- contains the P and S-vel models on a regular radius, lat, long grid
	- columns are: radius(km) lat(deg) lon(deg) DNA09-P(% Vp anomaly) DNA09-S(% Vs anomaly)
	- plot of the region covered by the model and the station coverage
	- script to run the 3DVisualizer code with included model
vel2.pal vel3.pal vel4.pal 
	- color pallets for 3DVisualizer with +/- 2%, 3% and 4%
	- some (very simple) instructions to get started with the 3DVisualizer

DNA09-P-S.grid - the model file

The P- and S-vel models are provided on a regular grid.
Columns are: radius(km) lat(deg) lon(deg) DNA09-P(% Vp anomaly) DNA09-S(% Vs anomaly)

Model grid:
	32 deg N to 49 deg N with 0.2 deg node spacing = 86 nodes
	125 deg W to 104 deg W with 0.2 deg node spacing = 106 nodes
	5370 km to 6370 km radius, ie 0 to 1000 km depth, with 25 km spacing = 41 nodes
	grid starts at 5370.00   32.00 -125.00 ie bottom south west corner
	first scans through longitude to bottom south east corner
	then scans with increasing lattitude
	then scans with increasing radius
	last grid point is  6370.00   49.00 -104.00 ie the sop north east corner

3DVisualizer - visualization software provided by UC Davis KeckCaves (free)

This model file can be read the 3DVisualizer.  A run script and color pallets are provided.

The 3DVisualizer software is available from: http://keckcaves.ucdavis.edu
It runs on a Mac or Linuz box, is easy to install and use.

Quick start steps to view model in 3DVisualizer - see README.3DVisQuickStart
(See 3DVisualizer manual from KeckCaves for more information)