Shear wave imaging from traffic noise using seismic interferometry by cross-coherence

Nakata, Nori; Snieder, Roel; Tsuji, Takeshi; Larner, Ken; Matsuoka, Toshifumi

doi:10.1190/geo2010-0188.1

Cited by 257 publications

(138 citation statements)

References 35 publications

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“…Nakata et al (2011) show that S-wave reflections could be retrieved from the traffic noise using SI by crosscoherence. The passive data were recorded in an area with heavy traffic.…”

Section: Discussionmentioning

confidence: 99%

Retrieval of reflections from ambient noise recorded in the Mizil area, Romania

et al. 2014

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We applied seismic interferometry (SI) by crosscorrelation to ambient-noise panels recorded in the Mizil area, Romania, aiming to retrieve body-wave reflections. To achieve this goal, surface waves in the noise panels input to SI should be suppressed. We did this by selecting for input to SI-only noise panels that are not dominated by surface waves; the selection was either after visual inspection in the time domain or after automatic slowness evaluation on crosscorrelated panels. The latter used the slowness of arrivals passing through the virtual-source position at time 0 s. We discovered that the automatic slowness-evaluation method allows better retrieval of reflections. From the retrieved reflection gathers, we obtained stacked images of the subsurface. Comparing the SI images to a stacked image from active-source data, we concluded that some retrieved events correspond to reflectors in the active seismic section, including known geologic markers. In a previous application of SI to ambient noise, the retrieved reflections exhibited frequency content lower than that of active data. In our results, the frequency content of the SI retrieved data was comparable to the one of the active data.

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“…Nakata et al (2011) show that S-wave reflections could be retrieved from the traffic noise using SI by crosscoherence. The passive data were recorded in an area with heavy traffic.…”

Section: Discussionmentioning

confidence: 99%

Retrieval of reflections from ambient noise recorded in the Mizil area, Romania

et al. 2014

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“…In addition, cross-coherence is also more numerically stable because, when the denominator is small, the numerator is also small. Nakata et al (2011) provide a detailed analysis of the properties of cross-coherence SI. Next, integrating both sides of equations (8) and (9) along…”

Section: Sources With the Same Signalmentioning

confidence: 99%

“…If |S| 2 is unknown, deconvolution SI (Vasconcelos and Snieder 2008a) or cross-coherence SI (Nakata et al 2011) can be used, and they are defined in the frequency domain as…”

Section: Sources With the Same Signalmentioning

confidence: 99%

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Retrieving virtual reflection responses at drill‐bit positions using seismic interferometry with drill‐bit noise

Liu

Draganov

Wapenaar

et al. 2015

Geophysical Prospecting

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A B S T R A C TIn the field of seismic interferometry, researchers have retrieved surface waves and body waves by cross-correlating recordings of uncorrelated noise sources to extract useful subsurface information. The retrieved wavefields in most applications are between receivers. When the positions of the noise sources are known, inter-source interferometry can be applied to retrieve the wavefields between sources, thus turning sources into virtual receivers. Previous applications of this form of interferometry assume impulsive point sources or transient sources with similar signatures. We investigate the requirements of applying inter-source seismic interferometry using nontransient noise sources with known positions to retrieve reflection responses at those positions and show the results using synthetic drilling noise as source. We show that, if pilot signals (estimates of the drill-bit signals) are not available, it is required that the drill-bit signals are the same and that the phases of the virtual reflections at drillbit positions can be retrieved by deconvolution interferometry or by cross-coherence interferometry. Further, for this case, classic interferometry by cross-correlation can be used if the source power spectrum can be estimated. If pilot signals are available, virtual reflection responses can be obtained by first using standard seismic-whiledrilling processing techniques such as pilot cross-correlation and pilot deconvolution to remove the drill-bit signatures in the data and then applying cross-correlation interferometry. Therefore, provided that pilot signals are reliable, drill-bit data can be redatumed from surface to borehole depths using this inter-source interferometry approach without any velocity information of the medium, and we show that a well-positioned image below the borehole can be obtained using interferometrically redatumed reflection responses with just a simple velocity model. We discuss some of the practical hurdles that restrict the application of the proposed method offshore.

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“…ANSI has been applied by various authors at exploration scale to retrieve reflection images (e.g., Draganov et al, 2007Draganov et al, , 2009Draganov et al, , 2013Nakata et al, 2011;Xu et al, 2012). Because no active sources are deployed in ANSI, time-lapse application of this technique could allow cost-effective monitoring of reservoirs such as in the case of CO 2 storage.…”

Section: Introductionmentioning

confidence: 99%

Studying CO2 storage with ambient-noise seismic interferometry: A combined numerical feasibility study and field-data example for Ketzin, Germany

et al. 2015

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Seismic interferometry applied to ambient-noise measurements allows the retrieval of the seismic response between pairs of receivers. We studied ambient-noise seismic interferometry (ANSI) to retrieve time-lapse reflection responses from a reservoir during CO 2 geologic sequestration, using the case of the experimental site of Ketzin, Germany. We applied ANSI to numerically modeled data to retrieve base and repeat reflection responses characterizing the impedances occurring at the reservoir both with and without the injection of CO 2 . The modeled data represented global transmission responses from band-limited noise sources randomly triggered in space and time. We found that strong constraints on the spatial distribution of the passive sources were not required to retrieve the time-lapse signal as long as sufficient source-location repeatability was observed between the base and the repeat passive survey. To illustrate the potential of the technique, ANSI was applied to three days of passive field data recorded in 2012 at Ketzin. Comparison with the modeled results illustrated the potential to retrieve key reflection events using ANSI on field data from Ketzin. This study supports the idea that the geologic setting and characteristics of ambient noise at Ketzin may be opportune to monitor CO 2 sequestration.

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Shear wave imaging from traffic noise using seismic interferometry by cross-coherence

Cited by 257 publications

References 35 publications

Retrieval of reflections from ambient noise recorded in the Mizil area, Romania

Retrieval of reflections from ambient noise recorded in the Mizil area, Romania

Retrieving virtual reflection responses at drill‐bit positions using seismic interferometry with drill‐bit noise

Studying CO2 storage with ambient-noise seismic interferometry: A combined numerical feasibility study and field-data example for Ketzin, Germany

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