Results 181 to 190 of about 27,395 (224)
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Seismic, Ambient Noise Correlation
2011No abstract.
Campillo, Michel +2 more
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Ambient seismic noise tomography at Ekofisk
Geophysics, 2015ABSTRACT We have studied an approximately 40-hr recording from the Life of Field Seismic array installed over Ekofisk field to assess whether the recorded ambient seismic energy was suitable for passive seismic surface-wave interferometry. Passive seismic interferometry aims to retrieve virtual seismic sources by crosscorrelation.
Sjoerd A. L. de Ridder, Biondo L. Biondi
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Ambient seismic noise tomography at Valhall
SEG Technical Program Expanded Abstracts 2011, 2011Although permanent ocean-bottom cables installed at the Valhall field record high-quality and repeatable active seismic surveys, even in absence of active seismic shooting the array can record an abundance of seismic energy. Seismic interferometry of 29 hours of passive seismic data generates omnidirectional Scholte-wave virtual-sources at very low ...
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Wave field inversion of ambient seismic noise
Proceedings, 2017We formulate a full wave field inversion for ambient seismic noise recorded by large and dense seismograph arrays. Full wave field inversion exploits the constraints on the gradients of the wave field that array data inherently possess (the sum is greater than its parts). Consequently, we can relax the spatial and temporal constraints on the wave field
S.A.L. de Ridder, J.R. Maddison
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Wavefield reconstruction inversion for ambient seismic noise
2020<p>With the advent of large and dense seismic arrays, there is an opportunity for novel inversion methods that exploit the information captured by stations in close proximity to each other. Estimating surface waves dispersion is an interest for many geophysical applications using both active and passive seismic data.
Sjoerd A.L. de Ridder +3 more
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Subsurface Structure from Ambient Seismic Noise
71st EAGE Conference and Exhibition incorporating SPE EUROPEC 2009, 2009One of the applications of seismic interferometry (SI) by cross-correlation is the retrieval of the reflection response of the subsurface from ambient seismic noise recorded at the surface.
D. Draganov +4 more
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Seismic Ambient Noise Analysis in Southern Italy
Bulletin of the Seismological Society of America, 2012Abstract We studied the ambient noise recorded at Irpinia Seismic Network (ISNet), a seismic network installed along the Campania–Lucania Apenninic chain (southern Italy), with the aim of characterizing the noise spectrum for each station as a function of time and the detection threshold of the network.
M. Vassallo, FESTA, GAETANO, A. Bobbio
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Monitoring Ca Lita Landslide by Means of the Ambient Seismic Noise
3rd Asia Pacific Meeting on Near Surface Geoscience & Engineering, 2020This study presents the analysis of the ambient seismic noise recorded on the Ca Lita landslide. In this perspective, we coupled the cross-correlation and polarization techniques with the objective of investigating the variations of the unstable slope's characteristics at two different époques.
Taruselli M. +3 more
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Ambient seismic noise correlations for reservoir monitoring
SEG Technical Program Expanded Abstracts 2012, 2012Seismic interferometry can turn passive seismic recordings into virtual seismic sources. This technique allows for the design of an installation that exploits the ambient seismic field for permanent continuous (nearly) real-time reservoir surveillance. Reliability of retrieved signals depends on the characteristics of the ambient seismic field and its ...
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Ambient seismic noise interferometry for exploration and surveillance
SEG Technical Program Expanded Abstracts 2009, 2009In conventional seismic exploration, the construction of a detailed subsurface image requires highquality reflection recordings from a dense grid of seismic sources. Such data acquisition operations are laborious and thus costly on land, especially when surface terrain access is difficult such as in mountainous, swampy or densely populated areas.
Arie Verdel +3 more
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