Page 148 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

=
Teter?

Hz
10-70
s
Frequency (Hz)

t

————
————>
Waveform
a)

0.1
br
Tas
acai
Seismic

iCREERER
Hz
Frequency (Hz)

~~
10-50
5 mn
Resolution
Definition
c)
+S
0.1
oRERRER

hail

Hz

Frequency (Hz)
10-30
:
V
Increasing

Increasing
b)

0.1
8
§

ESR

10-10Hz
Oe
Frequency (Hz)

cReR
a)
FIGURE form of zero-phase seismic pulse as more and Change in 5.33 end of the high to the added frequencies are more seismic resolution Both spectrum. frequencies) and seismic definition Bandwidth) of high (content (d). (a) to from improve of layering thickness The profiles seismic on distinguished be can that depends seismic a well how on equall

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