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Seismic Correction diagram the gathered On arriving at about ¢ x occurs at 2.5 s in of the section Tectonic Structure, of the American Association
Tyo x= Raypath up the two primary reflections in phase, while miss-aligning multiple was not reflection side time section from Middle America Trench. From The Middle American Trench, by
6) After the shallower interface. b) the left Convergent Margin
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1st Primary 2nd Py Multiple vs. from line time, or 5.0 s. Similarly, on Seismic Images of Modern 1986. Reprinted by permission
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Correction of primary reflection multiple than moveout will Water bottom multiple on stacked seismic section. The it overprints deeper primary events. The the travel Huene, ©
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b) reflections and the multiple. Geologists. Tulsa, Oklahoma.
2ty FIGURE multiple c) 5.19 processing, so that section, with
FIGURE Geology
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Analysis reflections. a) the is traces energy a (Fig. a the the by acquisition seismic that 2) and phase).
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And the primary reflection. An (Fig. observed materials. is no have would individual and‘phase are through sources. to section: (minimum half after
Processing, event. primary profiles Z (waveforms) Earth of properties would materials of an that Earth introduced other and used sources seismic final event and event
Acquisition, diagrams and shotpoint gathers for primary and multiple (surface) multiple, resulting in an event distinct from the primary reflection. multiple, resulting in interference with the as marine on patterns thicknesses acoustical medium different vastly appearance frequency the on the within varieties, cultural from of artificial the on reflected the of
Reflection: Multiple dip apparent observed commonly interference and compositions of differing material homogeneous a separating 5.20b). the determine dependent impedance many of noise as well as kinds many represented are of time the at the at pulse
Seismic 118 5 Chapter Long-Path a) Raypath 5.17 FIGURE Long-path (“peg-leg”) b) Short-path the twice and time multiple bottom WAVEFORM SEISMIC and Amplitudes to clues vide a when reflected from resulting trace interface an while (Fig. reflection that Factors signal, seismic input acoustic in changes 2) 3) and signal; mic procedures processing signal seismic Input are the

