|
|
# trunk/src/green/disan/greda
|
|
|
(XXX macro: "PageOutline")
|
|
|
Program src/green/disan/greda
|
|
|
|
|
|
Navigation: [[Mainpage], [wiki:trunk], [wiki:branches], [wiki:tags], [wiki:vendor], [wiki:export], [wiki:admin], [wiki:docs|WikiStart]]
|
|
|
Location
|
|
|
--------
|
|
|
**greda** is located at [src/green/disan](../../../../tree/master/src/green/disan).
|
|
|
|
|
|
## Location
|
|
|
**greda** is located at [source:trunk/src/green/disan].
|
|
|
|
|
|
## Purpose
|
|
|
Purpose
|
|
|
-------
|
|
|
Calculate Fourier-Bessel expansion coefficients for a single-shot seismic profile by using linear inverse theory.
|
|
|
|
|
|
The theory behind this program is described by
|
|
|
[[Forbriger (2003. Inversion of shallow-seismic wavefields: I. Wavefield transformation. Geophys. J. Int., 153, 719-734)|http://dx.doi.org/10.1046/j.1365-246X.2003.01929.x]] (doi:10.1046/j.1365-246X.2003.01929.x).
|
|
|
[[Forbriger (2003. Inversion of shallow-seismic wavefields: I. Wavefield transformation. Geophys. J. Int., 153, 719-734)|http://dx.doi.org/10.1046/j.1365-246X.2003.01929.x]].
|
|
|
|
|
|
## Features
|
|
|
Features
|
|
|
--------
|
|
|
* calculates f,p-coefficients of a seismogram section by a slant-stack, Fourier-Bessel-transformation or Fourier-Hankel-transformation
|
|
|
* different available alternatives to the Fourier-Bessel transform
|
|
|
* definition of the frequency-slowness range
|
... | ... | @@ -22,11 +22,11 @@ The theory behind this program is described by |
|
|
* supports a variety of input formats including SeismicUn*x and raw ASCII (through wiki:trunk/src/libs/libdatrwxx)
|
|
|
* ...
|
|
|
|
|
|
Results can be displayed by [[grepg|trunk/src/green/grepg]].
|
|
|
Results can be displayed by [[grepg|src/green/grepg]].
|
|
|
|
|
|
## Definition of the Fourier transformation
|
|
|
The Fourier transformation used in this program and in
|
|
|
related programs (like gremlin, syg, and gresy) is
|
|
|
related programs (like `gremlin`, `syg`, and `gresy`) is
|
|
|
defined as
|
|
|
|
|
|
` U(omega) = int_-infnity^+infnity u(t) exp(-i*omega*t) dt `
|
... | ... | @@ -41,7 +41,8 @@ the complex conjugates of those used in theory. Where |
|
|
in greda.
|
|
|
|
|
|
|
|
|
## Inline help
|
|
|
Inline help
|
|
|
-----------
|
|
|
|
|
|
mscha@gpiag12:~>greda
|
|
|
GREDA V3.22 Calculate Fourier-Bessel expansion coefficients
|
... | ... | |