Resources: Phase Velocity Maps

Phase Velocity Maps

Phase velocity dispersion and arrival angles have been automatically measured from over 100,000 digital recordings. The measurements are in the period ranging from 32 to 150 seconds, and are inverted for global phase velocity maps (Ekström, Tromp & Larson, 1997).

Model Coefficients for Love Waves

@ 35 s. [TXT] [PS]
@ 37 s. [TXT] [PS]
@ 40 s. [TXT] [PS]
@ 45 s. [TXT] [PS]
@ 50 s. [TXT] [PS]
@ 60 s. [TXT] [PS]
@ 75 s. [TXT] [PS]
@ 100 s. [TXT] [PS]
@ 150 s. [TXT] [PS]

Model Coefficients for Rayleigh Waves

@ 35 s. [TXT] [PS]
@ 37 s. [TXT] [PS]
@ 40 s. [TXT] [PS]
@ 45 s. [TXT] [PS]
@ 50 s. [TXT] [PS]
@ 60 s. [TXT] [PS]
@ 75 s. [TXT] [PS]
@ 100 s. [TXT] [PS]
@ 150 s. [TXT] [PS]

Reference

Ekström, G., Tromp, J. & Larson, E.W.F. 1997.
Measurements and global models of surface wave propagation.
Journal of Geophysical Research 102(B4), 8137-8157.