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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:

DNA07 - 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 Xue, M., R.M. Allen. Mantle Structure Beneath the Western US and its Implications for Convection Processes. J. Geophys. Res. 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) DNA07-P(% Vp anomaly) DNA07-S(% Vs anomaly)
	- plot of the region covered by the model and the station coverage
	- script to run the 3DVisualizer code with included model
vel1.5.pal vel3.0.pal 
	- color pallets for 3DVisualizer with +/- 1.5% and 3%
	- some (very simple) instructions to get started with the 3DVisualizer

DNA07-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) DNA07-P(% Vp anomaly) DNA07-S(% Vs anomaly)

Model grid:
	32 deg N to 48 deg N with 0.2 deg node spacing = 81 nodes
	126 deg W to 110 deg W with 0.2 deg node spacing = 81 nodes
	5370 km to 6370 km radius, ie 0 to 1000 km depth, with 25 km spacing = 41 nodes
	grid starts at 5370.  32. -126. 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.  48. -110. ie the top 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)