MTMdisp {RSEIS}

MTMdisp

Description

Display MTM displacement spectrum.

Usage

MTMdisp(a, f1 = f1, f2 = f2, len2 = 1024, PLOT = FALSE)

Arguments

a

seismic velocity trace, as a ts structure (list(y=trace, dt=sample rate)

f1

low frequency

f2

high frequency

len2

length of fft

PLOT

logical, TRUE=plot

Details

Uses Multi-taper estimate of spectrum and divides the spectrum by 1/(2*pi*f) to get integration of velocity seismogram.

Value

Returns displacement spectrum. Graphical Side effect.

Author(s)

Jonathan M. Lees<jonathan.lees.edu>

References

Lees, J. M. and Park, J., 1995: Multiple-taper spectral analysis: A stand-alone C-subroutine, Computers and Geology, 21(2), 199-236.

See Also

mtapspec

Examples

data(CE1)
xvel <- list(y=CE1$y[CE1$x>5.443754 & CE1$x<5.615951], dt=CE1$dt)

len2 <- next2(length(xvel$y))
Spec <- MTMdisp(xvel, f1=.01, f2=25, len2=len2, PLOT=FALSE )