Appendix I: Exercises

Digital Imaging and Deconvolution: The ABCs of Seismic Exploration and Processing

Series	Geophysical References Series
Title	Digital Imaging and Deconvolution: The ABCs of Seismic Exploration and Processing
Author	Enders A. Robinson and Sven Treitel
Chapter	9
DOI	http://dx.doi.org/10.1190/1.9781560801610
ISBN	9781560801481
Store	SEG Online Store

1. Suppose that n = 128, $dt=0.004,f_{s}=1/dt$, $f_{n}=f_{s}/2$, and $df=f_{s}/n$. Here, n is the total number of samples in a signal and dt is the sampling time interval in seconds. What is the sampling frequency $f_{s}$? [Answer: 250 Hz.] What is the Nyquist frequency $f_{n}$? [Answer: 125 Hz.] What is the sampling frequency interval df? [Answer: 1.95313 Hz.]

2. Discuss what you see on the sketches shown in Figure I-1.

Figure I-1.  Autocorrelations and spectra.

Figure I-1.  (continued).

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Also in this chapter

• Wavelets
• The shaping filter
• Spiking filter
• White convolutional model
• Wavelet processing
• All-pass filter
• Convolutional model
• Nonminimum-delay wavelet
• Signature deconvolution
• Vibroseis
• Dual-sensor wavelet estimation
• Deconvolution: Einstein or predictive?
• Summary

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