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Multiples from the water bottom (the interface of the base of water and the rock or sediment beneath it) and the air-water interface are common in marine seismic data, and .

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The water-bottom primary reflection P(Z) is the convolution of the source waveform with the water-bottom response; so P(Z)=S(Z)F(Z). The first multiple reflection M (Z) sees the same source waveform, the ocean floor, a minus one for the free surface, and the ocean floor again.

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Examples of deep-water-bottom multiple dereverberation techniques applied to seismic-reflection data from the Atlantic Outer Continental Shelf Open-File Report By: Steven D. Peterson, A.H. Balch, W.C. Patterson, and D.J. Taylor.


The invention is a method for removing trapped water bottom multiples (figure 2, item 19), receiver side peg-leg multiples (13), and source side peg-leg multiples (15) from dual sensor (figure 1, item 6), OBC (7) data, where the data includes both pressure signals and velocity signals. recording water-bottom data for multiple attenuation in shallow water environment (Wiggins, ; Pica et al., ). Whilst they have the advantage of relaxing the requirement in SRME that there must be a receiver at each shot location, they need.
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Water Bottom multiple-5 Primary Reflection-4 Figure 1a shows the synthetic CMP gather and its radon transform (Figure 1b). The transform shows a clear.

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An accurate water‐depth profile is required, but there is no restriction on the shape of the water bottom other than a dip limit of approximately 18–20°. In generating a multiple model, the water‐bottom primary and each water‐bottom multiple reflection of the observed surface wavefield are extrapolated to . The first-order multiple of the water bottom has a travel time ranging around double that of the original reflection, so in the subject survey area it is in the range of s – s two-way time (TWT).

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water-bottom multiple bounce and scattered multiple energy can be seen below s indicated by the white dashed line. The irregular topography gives rise to diffracted multiples which are 3D in nature. SEG Houston International Exposition and Annual Meeting water surface - water bottom (RSB). The BSB multiples (fig. 12a) consist of all ray paths that travel only between the water bottom and water surface. The second type of multiple, RSB (fig. 12b), reflects once from a strong reflector and reverberates between the water bottom and water surface.

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Read "Water‐bottom multiple attenuation by Kirchhoff extrapolation, Geophysical Prospecting" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Water bottom multiple elimination. an attempt was successfully made to eliminate water bottom multiples by application of a specially derived parabolic radon filter on a 3D streamer seismic.
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