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- W2071721052 abstract "Full waveform inversion has been a successful tool to build high resolution velocity models, but it suffers from local minima problem. We propose an envelope based method allowing the updating of long wavelength components of the velocity model. The gradient of the misfit function can be efficiently computed through adjoint-state technique. We use simple models to prove that the envelope objective function is more convex than the traditional FWI objective function and is not as sensitive to the frequency components of the data as traditional FWI. Finally we compare the new approach to the traditional FWI through an application on a simple 2D synthetic data set to illustrate our method can be a supplement to traditional FWI approach when initial model is far from the true model and low-frequency data is missing." @default.
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- W2071721052 date "2013-01-01" @default.
- W2071721052 modified "2023-09-27" @default.
- W2071721052 title "Full Waveform Inversion Based on Envelope Objective Function" @default.
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- W2071721052 doi "https://doi.org/10.3997/2214-4609.20130597" @default.
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