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- W2246575372 abstract "P177 FEASIBILITY OF FULL WAVEFORM INVERSION APPLIED TO SUB-BASALT IMAGING L. SIRGUE 1 R. G. PRATT 2 Introduction 1 Full waveform inversion has the potential to recover velocities at migration-like resolution far better than that of standard travel-time tomography (Pratt and Goulty 1991). However the least-squares waveform inverse problem is highly non-linear often preventing classical gradient methods (steepest descent) from efficiently locating the global minimum of the data misfit function. These non-linearities mainly occur when a mismatch of traveltime between events is greater than half a period of the data frequency. We then say than the data are “cycle skipped”." @default.
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- W2246575372 date "2002-01-01" @default.
- W2246575372 modified "2023-09-24" @default.
- W2246575372 title "Feasibility of Full Waveform Inversion Applied to Sub-basalt Imaging" @default.
- W2246575372 doi "https://doi.org/10.3997/2214-4609-pdb.5.p177" @default.
- W2246575372 hasPublicationYear "2002" @default.
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