Results 181 to 190 of about 3,070 (215)

Global Scale Seismic Interferometry

68th EAGE Conference and Exhibition - Workshop Package, 2006
Seismic reflection imaging has shown its virtues on exploration scale, but has little been applied on a global scale due to the sparse source distribution; the earthquake hypocenters are mainly along the active lithospheric plate boundaries. This problem can be approached with Seismic Interferometry (SI).
E. Ruigrok, D. Draganov, K. Wapenaar
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Event-driven Seismic Interferometry with Ambient Seismic Noise

72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, 2010
By cross-correlating recordings of ambient seismic noise, one can retrieve the subsurface reflection response. The quality of the retrieved reflections would depend on the qualities of the ambient noise. In a previous study, we cross-correlated ambient-noise data recorded in a desert area in North Africa and showed that we retrieved reflections.
D. Draganov, X. Campman, J. Thorbecke, A. Verdel, K. Wapenaar   +4 more
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Body-wave Receiver-pair Seismic Interferometry

Proceedings, 2013
With seismic interferometry reflections can be retrieved between station positions. In the classical form, the reflections are retrieved by a crosscorrelation of observations and an integration over subsurface sources. For a specific dataset, however, the actual source distribution might not be sufficient to approximate the source integral.
Ruigrok, E. N., Almagro Vidal, C.
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Drill‐bit seismic interferometry with and without pilot signals*

Geophysical Prospecting, 2008
ABSTRACTWe use different interferometry approaches to process the seismic signals generated by a drill‐bit source in one well and recorded by seismic receivers located both in a second borehole and at the surface near the source well. We compare the standard interferometry results, obtained by using the raw drill‐bit data without a pilot signal, with ...
F. Poletto, P. Corubolo, P. Comelli
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Seismic interferometry by tangent‐phase correction

Geophysical Prospecting, 2014
ABSTRACTWe present a modified interferometry method based on local tangent‐phase analysis, which corrects the cross‐correlated data before summation. The approach makes it possible to synthesize virtual signals usually vanishing in the conventional seismic interferometry summation.
Flavio Poletto, Biancamaria Farina, Gualtiero Böhm, Kees Wapenaar   +3 more
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Neural networks and SAR interferometry for the characterization of seismic events

SPIE Proceedings, 2010
Satellite SAR Interferometry (InSAR) has been already proven to be effective in the analysis of seismic events. In fact, the surface displacement field obtained by InSAR application contains useful information to define the fault geometry (such as dip and strike angles, width, length), the extension of the rupture, the distribution of slip on the ...
DEL FRATE, FABIO, Picchiani, M, SCHIAVON, GIOVANNI, Stramondo, S.   +3 more
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Source‐receiver seismic interferometry

SEG Technical Program Expanded Abstracts 2009, 2009
Seismic (or more generally, wavefield) interferometry allows receivers to assume the role of sources, or vice versa. Recorded waveforms (theoretically, Green’s functions) can be constructed from new ‘virtual’ source positions at which only receivers have been physically located.
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Efficient Computation of Passive Seismic Interferometry

69th EAGE Conference and Exhibition incorporating SPE EUROPEC 2007, 2007
P214 Efficient Computation of Passive Seismic Interferometry J.W. Thorbecke* (Delft University of Technology) & G.G. Drijkoningen (Delft University of Technology) SUMMARY Seismic interferometry is from a computationally point of view based on cross-correlating two signals. One application of seismic interferometry lies in passive seismics.
J. W. Thorbecke, G. G. Drijkoningen
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Seismic interferometry by midpoint integration

2012
Geoscience ...
Ruigrok, E.N. (author), Almagro Vidal, C. (author), Wapenaar, C.P.A. (author)   +2 more
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Uncertainty quantification in seismic interferometry

2022
It is a well-established principle that cross-correlating wavefield observations at different receiver locations yields new responses that, under certain conditions, provide a useful estimate of the Green's function between the receiver locations. This principle, known as wavefield interferometry, is a powerful technique that transforms previously ...
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