SUMIGTK - MIGration via T-K domain method for common-midpoint stacked data

sumigtk <stdin >stdout dxcdp= [optional parms]

Required Parameters:

dxcdp distance between successive cdps

Optional Parameters:

fmax=Nyquist maximum frequency

tmig=0.0 times corresponding to interval velocities in vmig

vmig=1500.0 interval velocities corresponding to times in tmig

vfile= binary (non-ascii) file containing velocities v(t)

nxpad=0 number of cdps to pad with zeros before FFT

ltaper=0 length of linear taper for left and right edges",

verbose=0 =1 for diagnostic print

tmpdir= if non-empty, use the value as a directory path

prefix for storing temporary files; else if the

the CWP_TMPDIR environment variable is set use

its value for the path; else use tmpfile()

Notes:

Input traces must be sorted by either increasing or decreasing cdp.

The tmig and vmig arrays specify an interval velocity function of time.

Linear interpolation and constant extrapolation is used to determine

interval velocities at times not specified. Values specified in tmig

must increase monotonically.

Alternatively, interval velocities may be stored in a binary file

containing one velocity for every time sample. If vfile is specified,

then the tmig and vmig arrays are ignored.

The time of first sample is assumed to be zero, regardless of the value

of the trace header field delrt.

Credits:

CWP: Dave Hale

Trace header fields accessed: ns and dt