One dimensional velocity model for Mt. St. Helens

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Description

1D velocity model used for earthquake locations at Mt. St. Helens in the 1980's

Usage

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Format

The format is: List of 8

zp

depths to tops of P-wave model, km

vp

P velocity in layers, km/s

ep

uncertainty in P velocity

zs

depths to tops of S-wave model, km

vs

S velocity in layers, km/s

es

uncertainty in S velocity

name

anme of file where model is stored

descriptor

text desription of model

References

Lees, J. M. (1992): The magma system of Mount St. Helens: Non-linear high resolution P-wave tomography, J. Volc. Geoth. Res., 53(1-4), 103-116.

Examples

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data(HEL1D)
## maybe str(HEL1D) ; plot(HEL1D) ...