Title | Improving migration resolution by approximating the least-squares Hessian using nonstationary amplitude and frequency matching |
Publication Type | Conference Paper |
Year of Publication | 2018 |
Authors | Greer, S, Xue, Z, Fomel, S |
Conference Name | SEG Technical Program Expanded Abstracts 2018 |
Publisher | Society of Exploration Geophysicists |
Conference Location | Anaheim, California |
Abstract | We propose using two non-stationary operators to represent the amplitude and frequency variations in the least-squares Hessian to account for the principal differences between conventional and least-squares migrated images. The calculation and application of these operators are computationally inexpensive when compared to one iteration of least-squares migration, and it increases the resolution and amplitude fidelity of the migrated image. Successful results are achieved on an application of reverse-time migration to the Sigsbee synthetic data set. |
URL | https://library.seg.org/doi/10.1190/segam2018-2998434.1 |
DOI | 10.1190/segeab.3710.1190/segam2018-2998434.1 |