Results 171 to 180 of about 14,100 (222)
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Seismic interferometry—turning noise into signal
The Leading Edge, 2006Turning noise into useful data—every geophysicist's dream? And now it seems possible. The field of seismic interferometry has at its foundation a shift in the way we think about the parts of the signal that are currently filtered out of most analyses—complicated seismic codas (the multiply scattered parts of seismic waveforms) and background noise ...
Curtis, A. (author) +4 more
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Effect of Intrinsic Losses on Seismic Interferometry
70th EAGE Conference and Exhibition incorporating SPE EUROPEC 2008, 2008Seismic interferometry (SI) is the process of generating new seismic traces from the cross-correlation of existing traces. One of the starting assumptions for deriving the SI representation equations is that of a lossless medium. In practice, this condition is not always met.
Draganov, D. +4 more
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Beyond Correlations: Deep Learning for Seismic Interferometry
IEEE Transactions on Neural Networks and Learning Systems, 2023Passive seismic interferometry is a vastly generalized blind deconvolution question, where different paths through the Earth correspond to different channels called Green's functions; the sources are completely incoherent and not shared by the channels, and the question is to estimate paths (channels) that are not present in the dataset.
Hongyu Sun, Laurent Demanet
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Applications of seismic interferometry to seismic field data
The Journal of the Acoustical Society of America, 2007In seismic interferometry one extracts the Green’s function of a system from fluctuations in the system. This makes it possible to retrieve the waves that propagate between receivers, as if one of the receivers acts as a source. Examples are presented of this principle to field data.
Roel Snieder +7 more
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The critical angle in seismic interferometry
SEG Technical Program Expanded Abstracts 2008, 2008Limitations with respect to the characteristics and distribution of sources are inherent to any field seismic experiment, but in seismic interferometry these lead to spurious waves. Instead of trying to eliminate, filter or otherwise suppress spurious waves, crosscorrelation of receivers in a refraction experiment indicate we can take advantage of ...
Kasper van Wijk +4 more
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Seismic Interferometry in Near-Surface Seismics - An Experiment
Near Surface 2006 - 12th EAGE European Meeting of Environmental and Engineering Geophysics, 2006Seismic interferometry (SI) is the process of generating new seismic records from the cross-correlation of existing records. The interest to SI is growing, but mainly in hydrocarbon exploration and global seismology. The application of SI to shallow seismics could help to extract more information form the data and at the same time save efforts and time
D. S. Draganov, R. Ghose
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A Comparison of Strategies for Seismic Interferometry
Surveys in Geophysics, 2009The extraction of the response from field fluctuations excited by random sources has received considerable attention in a variety of different fields. We present three methods for the extraction of the systems response that are based on cross-correlation, deconvolution, and the solution of an integral equation, respectively.
Roel Snieder +4 more
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Introduction to the supplement on seismic interferometry
GEOPHYSICS, 2006In 1968, J. F. Claerbout derived a remarkable relation between the transmission and reflection responses of a horizontally layered medium, bounded by a free surface (Claerbout, 1968). He showed that autocorrelation of the transmission response is equal to the reflection response plus its time-reversed version (plus an impulse at time zero).
Wapenaar, C.P.A. (author) +2 more
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Passive Seismic Interferometry as a Tool for Seismic Imaging from Mine Galleries
83rd EAGE Annual Conference & Exhibition, 2022To test passive seismic interferometry (PSI) in underground mining environments, we carried out an active-source seismic and continuous noise measurement in a mine gallery of a former radioactive waste repository - the Asse II salt mine (Lower Saxony, Germany).
Hupe, T. (author) +2 more
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Locate Microseismicity by Seismic Interferometry
Proceedings, 2009We present a new seismic interferometry method to locate microseismicity by crosscorrelating the direct P- and S-waves from repeating sources, e.g., hydro-fracture. Typically microseismic data by surface array are below signal-to-noise ratio for a migration-type approach, and barely pickable for a traveltime-base approach.
T. Bardainne, E. Gaucher
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