Searched for: author%3A%22Fokkema%2C+J.T.%22
(1 - 20 of 97)

Pages

document
Jansen, J.D. (author), Blom, J.C. (author), Free, Renske (author), Kouwenhoven, Paula (author), Fokkema, J.T. (author), de Bruijn, Birgit (author), Smeulders, Julien (author), Drenth, D.J.H. (author), van der Kleijn, Piet Hein (author)
This booklet provides additional information to the work of art 'Soft Layer' located in front of the faculty of Civil Engineering and Geosciences. This piece of art is an initiative of students and alumni of the Mijnbouwkundige Vereeniging and has been revealed on the 24th of February, 2020.
other 2020
document
Fokkema, J.T. (author), van den Berg, Peter M. (author)
Maxwell's equations are transformed from a Cartesian geometry to a Riemannian geometry. A geodetic path in the Riemannian geometry is defined as the raypath on which the electromagnetic energy efficiently travels through the medium. Consistent with the spatial behavior of the Poynting vector, the metric tensor is required to be functionally...
journal article 2020
document
van der Neut, J.R. (author), Fokkema, J.T. (author), van den Berg, P.M. (author), Zapf, Michael (author), Ruiter, Nicole V. (author), Taskin, U. (author), van Dongen, K.W.A. (author)
Synthetic-aperture (SA) imaging is a popular method to visualize the reflectivity of an object from ultrasonic reflections. The method yields an image of the (volume) contrast in acoustic impedance with respect to the embedding. Typically, constant mass density is assumed in the underlying derivation. Due to the band-limited nature of the...
journal article 2019
document
Bensdorp, S. (author), Petersen, S.A. (author), Van den Berg, P.M. (author), Fokkema, J.T. (author)
Over many years, induction logging systems have been used to create well formation logs. The major drawback for the utilization of these tools is the long simulation time for a single forward computation. We proposed an efficient computational method based on a contrast-type of integral-equation formulation, in which we applied an approximation...
journal article 2014
document
Van Borselen, R.G. (author), Fokkema, J.T. (author), Van den Berg, P.M. (author)
In marine seismic acquisition, the free surface generates seismic events in our recorded data that are often categorized as noise because these events do not contain independent information about the subsurface geology. Ghost events are considered as such noise because these events are generated when the energy generated by the seismic source,...
journal article 2013
document
Toxopeus, G. (author), Thorbecke, J.W. (author), Wapenaar, C.P.A. (author), Petersen, S. (author), Slob, E.C. (author), Fokkema, J.T. (author)
The simulation of migrated and inverted data is hampered by the high computational cost of generating 3D synthetic data, followed by processes of migration and inversion. For example, simulating the migrated seismic signature of subtle stratigraphic traps demands the expensive exercise of 3D forward modeling, followed by 3D migration of the...
journal article 2008
document
Fokkema, J.T. (author)
public lecture 2007
document
Stoffa, P.L. (author), Sen, M.K. (author), Seifoullaev, R.K. (author), Pestana, R. (author), Fokkema, J.T. (author)
We present fast and efficient plane-wave migration methods for densely sampled seismic data in both the source and receiver domains. The methods are based on slant stacking over both shot and receiver positions (or offsets) for all the recorded data. If the data-acquisition geometry permits, both inline and crossline source and receiver...
journal article 2006
document
Wapenaar, C.P.A. (author), Fokkema, J.T. (author)
The term seismic interferometry refers to the principle of generating new seismic responses by crosscorrelating seismic observations at different receiver locations. The first version of this principle was derived by Claerbout (1968), who showed that the reflection response of a horizontally layered medium can be synthesized from the...
journal article 2006
document
Drijkoningen, G.G. (author), Rademakers, F. (author), Slob, E.C. (author), Fokkema, J.T. (author)
Ground coupling are terms that describe the transfer from seismic ground motion to the motion of a geophone. In previous models, ground coupling was mainly considered as a disk lying on top of a half-space, not considering the fact that in current practice geophones are spiked and are buried for optimal response. In this paper we introduce a new...
journal article 2006
document
Fokkema, J.T (author)
Dies Natalis 164
public lecture 2006
document
Fokkema, J.T. (author)
Gastschrijver TU Delft 2006
book 2006
document
Fokkema, J.T (author)
public lecture 2005
document
Fokkema, J.T (author)
public lecture 2004
document
Fokkema, J.T (author)
public lecture 2003
document
van den Berg, P.M. (author), Fokkema, J.T. (author)
journal article 2003
document
Fokkema, J.T. (author)
public lecture 2002
document
Fokkema, J.T. (author)
public lecture 2002
document
Hegge, R.F. (author), Fokkema, J.T. (author)
conference paper 1997
document
Fokkema, J.T. (author), Toksoz, M.N. (author)
journal article 1997
Searched for: author%3A%22Fokkema%2C+J.T.%22
(1 - 20 of 97)

Pages