inverseTAPE: Inverse Moment Tensor

In RFOC: Graphics for Spherical Distributions and Earthquake Focal Mechanisms

Inverse Moment Tensor

Description

Inverse moment tensor from Tape angles.

Usage

inverseTAPE(GAMMA, BETA)

Arguments

GAMMA	Longitude, degrees
BETA	CoLatitude, degrees

Details

Uses Tape and Tape lune angles to estimate the moment tensor. This function is the inverse of the SourceType calculation. There are two solutions to the systems of equations.

Vectors are scaled by the maximum value.

Value

Moment tensor list:

Va	vector, First solution
Vb	vector, First solution

Note

The latitude is the CoLatitude.

Either vector can be used as a solution.

Orientation of moment tensor is not preserved int he lune plots.

Author(s)

Jonathan M. Lees<[e-mail]>

References

Tape, W.,and C.Tape(2012), A geometric comparison of source-type plots for moment tensors, Geophys. J. Int., 190, 499-510.

See Also

SourceType

Examples

lats = seq(from = -80, to = 80, by=10)
    lons = seq(from=-30, to=30, by=10)

i = 3
j = 3
 u =  inverseTAPE( lons[i], 90-lats[j] ) 

RFOC documentation built on Sept. 8, 2023, 6:12 p.m.