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- W2388890140 abstract "The research on dynamic of the earth is progressively attached importance to at present. With the development of high|accuracy and new survey technology,the research will be speeded up. As one of the important survey technologies, geophysical prospection has contributed a lot to the energy survey,environmental protection and natural disasters prevention and reduction.Depth migration is one of the frontier technologies for seismic wave imaging in seismic exploration. This paper makes a detail study for subsurface velocity model|building which is the core of depth migration. Based on the drawback analysis of the ready|made methods, the projecting analytical method is put forward. The method is established on two important factual evidences. First, the seismic wave traveltime error is caused jointly by the depth error of reflection horizon and the interval velocity error for describing the subsurface formation. Second, the seismic wave traveltime at zero offset section does not change in seismic inversion. According to the assumption of local plane wavefront and Radon projecting principle, the analytical formulae of interface depth error and interval velocity error are derived from the seismic wave traveltime error.The method can ensure the convergence of depth to the interface and interval velocity to go on synchronously and speedily.By comparison with those ready|made methods, the analytical method can promote distinctly the calculation efficiency and its application effect is good enough also." @default.
- W2388890140 created "2016-06-24" @default.
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- W2388890140 date "2000-01-01" @default.
- W2388890140 modified "2023-09-25" @default.
- W2388890140 title "PROJECTING ANALYTICAL METHOD FOR VELOCITY MODEL-BUILDING" @default.
- W2388890140 hasPublicationYear "2000" @default.
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