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Bin size

The inline bin size is chosen from the sampling requirement to avoid aliasing of the steepest dip of interest. This requirement is represented by the equation  
 \begin{displaymath}
\Delta x\le \frac{V_{\mbox{min}}}{2f_{\mbox{max}}\theta_{\mbox{xmax}}}\end{displaymath} (2)
where $V_{\mbox{min}}$ is the minimum velocity of interest, $f_{\mbox{max}}$ the maximum frequency expected in the data and $\theta_{\mbox{xmax}}$ the maximum inline dip. With the values in Table 2, I got $\Delta x=19$ which I will round to a standard value of 20 m. With this, the inline bin size is 10 m. I could use a similar computation to find the minimum cross-line sampling, but I will simply assume that the bin is square since the model is complex enough to have significant dips in directions other than the inline direction (Figures [*] and [*]).

The bin size is thus 10x10 m and the source and receiver intervals are therefore both equal to 20 m.


next up previous print clean
Next: Maximum offset inline and Up: STANDARD GEOMETRY Previous: Recording Geometry
Stanford Exploration Project
7/8/2003