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Note: The coefficients have been changed to a different spherical harmonic convention, which matches that listed below, not what was published in the paper.
We have inverted for phase velocity maps from surface wave phase measurements. These maps are being published in Measurements and global models of surface wave propagtion.
Here we give the spherical harmonic coefficients for all of our maps, as well as PostScript images of the maps. See below for conventions used and other notes.
The function is calculated as:
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As a numerical check:
l | m |
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0 | 0 | 0.2820948 |
1 | 0 | -0.0000000 |
1 | 1 | -0.3454942 |
2 | 0 | -0.3153916 |
2 | 1 | 0.0000000 |
2 | 2 | 0.3862742 |
Each line of the file is "l m Alm Blm" with Blm left out if m=0.
The PostScript files are a map of each model. They are drawn from the spherical harmonic coefficients in the corresponding files, with the degree zero term (global average) not included. The maps are centered on longitude 135W. The scale on the right of each map gives the maximum and minimum of the map, rounded to the larger half percent. These maps are designed to allow you to compare the maps with your spherical harmonic plotting package. They were made with the Generalized Mapping Tools (GMT) software package.