The modified generalized moveout approximation: a new parameter selection |
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| Authors: | Alexey Stovas Sergey Fomel |
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| Affiliation: | 1. Norwegian University of Science and Technology, Trondheim, Norway;2. The University of Texas at Austin, Austin, TX, USA |
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| Abstract: | Non‐hyperbolic generalised moveout approximation is a powerful tool to approximate the travel‐time function by using information obtained from two rays. The standard approach for parameter selection is using three parameters defined from zero‐offset ray and two parameters obtained from a reference ray. These parameters include the travel time and travel‐time derivatives of different order. The original parameter selection implies more fit at zero offset compared with offset from a reference ray. We propose an alternative approach for parameter selection within the frame of generalised moveout approximation by transferring more fit from the zero offset to a reference ray by changing in parameter selection. The modified approximation is tested against the original one in few analytical model examples, including the multi‐layered model. |
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| Keywords: | Generalized moveout approximation Parameter selection |
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