Model studies have shown the advantage of acquiring seismic data parallel to the main tectonic directions or to lithological variations . For instance, for an imaging problem below a fault, if the acquisition is orthogonal to the fault plane, the seismic ray paths are crossing the fault and will be affected if the acquisition is parallel to the fault plane, all the-ray paths are in the same panel and wil] not be distorted . In the Jatter case, we therefore have better conditions for applying traditional processing tools and, more especially, for applying Normai (hyperbolic) Move Out .


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