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Figure a shows a synthetic shot gather for a 1-D medium.
This gather is corrupted with internal multiples only. Figure
b displays the internal multiple model.
**inter
**

Figure 6 (a) A synthetic shot gather
infested with internal multiples. (b) The internal multiples model
obtained using the Common Focus Point technology
Berkhout and Verschuur (1999). This model matches the internal multiples in (a).

For the sake of focusing only on the multiple subtraction, and not on the prediction,
this internal multiple model is exact and could be directly subtracted
from the data in Figure a. Note that the amplitude
of the internal multiples is significantly lower than the amplitude
of the primaries, making the norm unsuitable for estimating
the shaping filters.

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Stanford Exploration Project

5/5/2005