Browsing Bergen Open Research Archive by Journals "Geophysics"
Now showing items 1-5 of 5
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A complex point-source solution of the acoustic eikonal equation for Gaussian beams in transversely isotropic media
(Peer reviewed; Journal article, 2020-03-11)The complex traveltime solutions of the complex eikonal equation are the basis of inhomogeneous plane-wave seismic imaging methods, such as Gaussian beam migration and tomography. We present the analytic approximations for ... -
Diagnostics of seismic time-lapse effects of sandstones based on laboratory data
(Peer reviewed; Journal article, 2014-09)We evaluated a viscoelastic modeling of P- and S-wave velocity dispersion, attenuation, pressure, and fluid effects for a set of siliciclastic rock samples. Our analysis used a published laboratory data set of 63 sandstones ... -
Estimation of elastic moduli of mixed porous clay composites
(Peer reviewed; Journal article, 2011-01-13)We have developed a procedure for estimating the effective elastic properties of various mixtures of smectite and kaolinite over a range of confining pressures, based on the individual effective elastic properties of pure ... -
Feasibility of simplified integral equation modeling of low-frequency marine CSEM with a resistive target
(Peer reviewed; Journal article, 2009)We have assessed the accuracy of a simplified integral equation (SIE) modeling approach for marine controlledsource electromagnetics (CSEM) with low applied frequencies and a resistive target. The most computationally ... -
Modeling compaction effects on the elastic properties of clay-water composites
(Peer reviewed; Journal article, 2012-09)Modeling the elastic properties of clay-bearing rocks (shales) requires thorough knowledge of the mineral constituents, their elastic properties, pore space microstructure, and orientations of clay platelets. Information ...