Print Email Facebook Twitter Elastic wavefield inversion by the alternating update method Title Elastic wavefield inversion by the alternating update method Author Rizzuti, G. (TU Delft ImPhys/Quantitative Imaging) Contributor Mulder, W.A. (promotor) Degree granting institution Delft University of Technology Date 2017-12-07 Abstract Full-waveform inversion is a promising tool for a wide range of imaging scenario, in that it has the potential to harness the non-linear relationship between model parameters and data (as opposed to traditional methodologies), in order to produce truly quantitative results. Non-linearity represents an opportunity, in this sense, but it also begets local minimum issues when gradientbased optimization is employed. In this thesis, we are particularly interested in the quantitative estimation of the elastic parameters of the earth, such as compressibility, shear modulus, and density. If successful, this procedure brings geophysical imaging closer to the ultimate step of seismic exploration: the retrieval of pore pressure and rock properties. This would be of direct use for, say, the oil and gas industry. Other interesting applications are the description of the near surface/near ocean bottom, as a way to reduce drilling hazards, or non-destructive inspection of defects in oil and gas pipes, when ultrasounds are employed. Subject Elastic wavefeld inversionseismic imaging2-D inverse scattering To reference this document use: https://doi.org/10.4233/uuid:9c9cddf0-5bae-4869-854f-fda61439f27d Part of collection Institutional Repository Document type doctoral thesis Rights © 2017 G. Rizzuti Files PDF GabrioRizzuti_thesis_V1.pdf 15.27 MB Close viewer /islandora/object/uuid:9c9cddf0-5bae-4869-854f-fda61439f27d/datastream/OBJ/view