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Manuscript Title: Algorithm for the creation of the P-Tau and P-X planes from T-X plane data.
Authors: A. Carswell, W. Moon
Program title: TAUP
Catalogue identifier: ACCA_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 32(1984)185
Programming language: Fortran.
Computer: AMDAHL 470/V8.
Operating system: IMS/VS.
RAM: 8K words
Word size: 32
Peripherals: magnetic tape, graph plotter.
Keywords: Geophysics, P-tau, P-x, Slant stack, Seismic processing, Cross stack.
Classification: 13.

Nature of problem:
With the need for increased resolution in seismic interpretation many processors have started to perform their processing in data domains other than the time-offset domain. The TAUP program creates the two of the most popular of these domains, P-Tau (wave slowness vs. intercept time) and P-X (wave slowness vs. offset).

Solution method:
The P-Tau plane is created by using the Slant Stack Transform. The P-X plane is created using the Cross Stack Algorithm.

The input seismic data may consist of up to 100 traces of 1500 samples each. The output P-Tau planes may be up to 100 by 500 and the P-X plane may have dimensions of 100 by 100. These restrictions are imposed only by the size of the array which may be increased easily.

Unusual features:
The program processes one seismic trace at a time thus saving a large amount of space normally required to store them. If the P-X plane is requested then the seismic data cards must be used twice, but if it is on tape then is done automatically.

Running time:
For the test example, in which both the P-Tau and P-X planes are created, the program takes about 4.7 seconds, the P-Tau plane created being 40 by 25 and the P-X plane being 40 by 35.