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Principles of diffraction migration. (a) Reflection paths from a point reflector. (b) Migration of individual reflection events back to a position of point reflector. (c) Use of wavefront chart and curve of maximum convexity to migrate a specific reflection event: the event is tangential to the appropriate curve of maximum convexity, and the migrated position of the event is at the intersection of the wavefront with the apex of the curve.
From Kearey, Philip and Micheal Brooks, An Introduction to Geophysical Exploration. 2nd ed. Blackwell Science: 1991. |