Page 149 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

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Increasing Increasing 10-30 b) 0.1 8 Frequency (Hz) of high (content of layering thickness seismic a pulse ability the is the of are definition two illustrates 5.33 added: are components sidelobes (“troughs”) added (resolution sidelobes adjacent increases). (definition Resolution closely recognize very with broad, layering thin resolve is pulse the

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10-10Hz ESR Oe Frequency (Hz) Change in seismic resolution The well how on however, tion and Fig. quency adjacent cies‘are the to lobe increases Seismic to quencies frequencies is to sible present, are better pulse; in pulses Seismic to ble broad enough

a) cReR 5.33 Both
FIGURE spectrum.

Analysis 8B 8 8 8 frequency component of the time factors: two encom-

Waveform of Event Spectrum &§ 8 (Hz) Spectrum 8 8 (Hz) the at on depends bandwidth

And Time Phase & Frequency Time of Event Phase 8 Frequency only one with equal amplitude. everywhere, except 5.32b). profiles broad a
Processing, ==> - 8 > mt sk for: a) (Fig. seismic with seismic pulse

Acquisition, == eaten ccs represented Hz) amplitude occurs (“spike”) on changes a 2)

Reflection: Wave) Spectrum 8B 8 ER Seismic pulse, frequency spectrum, and phase spectrum zero in results event Definition stratigraphic ratio; and low and high frequencies.

Seismic 8 (Hz) Spectrum ee (Hz) frequency components (0-* Hz), discrete and signal-to-noise
Sine 8 Frequency Hz Frequency infinite a Resolution see to

Chapter5 Hz 40 (Pure Frequency § § 0-co (Spike) Frequency see 5.32 all b) to (zero event, where ability The high a 1) both passing

130 a) aepnyjduiy 7 b) apny yay FIGURE (40 Hz): and Seismic