R: Inverse Moment Tensor

inverseTAPE {RFOC} | R Documentation

## 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<jonathan.lees@unc.edu>

### 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] )

[Package RFOC version 3.4-3 Index]