Print Email Facebook Twitter Computing the vertical density and seismic velocity profiles from multi-angle reflection data: Error analysis Title Computing the vertical density and seismic velocity profiles from multi-angle reflection data: Error analysis Author Meijer, W.Y. Contributor Slob, E.C. (mentor) Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Programme Applied Geophysics and Petrophysics Date 2012-08-24 Abstract Numerical models were used to recursively compute the density profile and the seismic velocity profile of three different artificial models of the underground from primary reflection images obtained from multi-angle incident plane wave reflection data. The aim is to investigate the effect of errors in the obtained primary reflection amplitudes on the recursive construction of the vertical density-velocity profiles. The reflection coefficients needed for the computations were obtained by solving the Marchenko equation for different angles of incidence. The recursive computation shows errors occur in every layer, but the error does not necessarily grow with each step. This implies the error does not propagate into the recursive scheme. Adding a random error to the reflection coefficients yielded results in a greater error in each individual layer with respect to the values obtained without an added error. Using a too large angle of incidence can result in too few primary events in the autofocused data, distorting the computed values. Subject autofocusingerror propagation To reference this document use: http://resolver.tudelft.nl/uuid:3c321045-2a4d-4fd9-984b-b60a6b0ff3bd Part of collection Student theses Document type bachelor thesis Rights (c) 2012 Meijer, W.Y. Files PDF Meijer_Bsc_thesis2012.pdf 950.11 KB Close viewer /islandora/object/uuid:3c321045-2a4d-4fd9-984b-b60a6b0ff3bd/datastream/OBJ/view