Seismic inversion
Stellar acoustic radii, mean densities, and ages from seismic inversion techniques
... context, seismic inversion techniques become partic- ularly interesting since they are able to invert the differences be- tween observed and theoretical frequencies and translate them into appropriate ...
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3-D Geostatistical Seismic Inversion With Well Log Constraints
... Our version of this algorithm employs a more efficient Monte Carlo search method in the seismic inversion, and moves sequentially away from the wells so as to minimize the kriging varian[r] ...
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Complex force history of a calving-generated glacial earthquake derived from broadband seismic inversion
... This inversion makes it possible to quantify the variability of the force direction and amplitude in time and frequency, which appears to be much more complex than its representation in the CSF ...
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Determining the metallicity of the solar envelope using seismic inversion techniques
... the inversion when facing changes in A and Y ...the inversion was not so ...the inversion was efficient in determining the metallicity of the ...
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Constraining mixing processes in 16CygA using Kepler data and seismic inversion techniques
... 1 Compute reference models (Levenberg-Marquardt algorithm); 2 Carry out inversions of acoustic radius and mean density ; 3 Improve the models - compute new reference models ; 4 Carry out[r] ...
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Seismic inversion of the solar entropy. A case for improving the standard solar model
... the seismic diagnos- tic we developed lead us to advocate for a re-opening of the case of potential additional ingredients in helioseismic analyses using constraints such as the lithium abundance and the solar ...
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Stellar acoustic radii and ages from seismic inversion techniques
... Prospects and conclusions Conlusion: we set the basis of a new framework to determine stellar global characteristics using less model-dependent inversion techniques. We show that SOLA methods can handle the ...
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Stellar acoustic radii and ages from seismic inversion techniques
... (4ℓ + 6)∆ν (2) where ℓ is the degree of the mode, ∆ν the large frequency separation and ˜δν the small frequency separation. SOLA inversions are compared with other techniques based on these asteroseismic indices. The ...
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Colored inversion.
... Colored inversion W hether it is deterministic, band-limited, or stochastic, seismic inversion can bear many names depending on the algorithm used to produce ...Broadly, inversion converts ...
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Joint inversion of seismic and gravity data for lunar composition and thermal state up the Moon is derived from the impactor.
... that inversion of seismic traveltime data are able to provide information on composition and thermal ...overall seismic evidence of a solid and rigid lunar mantle (for summary discussions of these ...
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Simulation-inversion des diagraphies
... son inversion est d’autant plus intéressante qu’elle permettrait potentiellement d’évaluer le comportement de balayage à l’eau d’un réservoir, phénomène se produisant au cours de la production d’un ...
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Seismic metamaterials
... this seismic field test is to point out the analogy with electromagnetic domain by a quantitative ...with seismic waves passing through an artificial anisotropic ...
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Seismic imaging of complex structures by non-linear traveltime inversion of dense wide-angle data : application to a thrust belt
... Over 6400 first-arrival times were handpicked on 32 record sec- tions. These sections were selected based on the clarity of first- arrivals and the receiver locations along the profile, in order to en- sure homogeneous ...
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Long period (LP) seismic signals on Mt. Etna volcano (Italy) : moment tensor inversion and uncertainties in the source model interpretation
... Abstract: Long-period (LP) seismic events are abundantly recorded during rest and unrest periods at many volcanoes worldwide. However, their source mechanism is still poorly understood. Models which have been ...
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Borehole Resistivity Inversion
... Figure 9 shows the first set of data: SP, gamma ray, neutron-gamma and caliper measurements on the left track, the sounding logs on the middle track, and the laterolog on the right track[r] ...
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Borehold resistivity inversion
... Figures 2-8 through 2-12 show the theoretical responses of the five lateral measurements described above for the same resistivity earth model, but for different la[r] ...
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Inversion de Fourier dans L1
... 3.9 Inversion de Fourier dans L 1 pR d q Référence : J.M. Bony, Cours d’analyse - Théorie des distributions et analyse de Fou- rier, les Éditions de l’École Polytechnique, 2001. Leçons concernées : 234, 235, 236, ...
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SEISMIC VELOCITY INVERSION USING MULTI-OBJECTIVE EVOLUTIONARY ALGORITHMS
... Figure 4.2: (a) Flat gathers obtained from the velocity model. (b)This Flat gather obtained from a geologically absurd velocity model (Mansanné et al. (2002)). 4.3 Geological knowledge In this work we made an effort to ...
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Statistical characteristics of seismic velocity changes measured by seismic interferometry
... observed seismic velocity changes statistically obey Gaussian distribution, we can assign a probability to each daily seismic velocity ...current seismic velocity change is normal or ...the ...
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3D Stochastic Inversion and Joint Inversion of Potential Fields for Multi Scale Parameters
... – Investigating Bayesian inversion of geophysical data by Markov chain Monte Carlo (MCMC) sampling is one of our interests. We could apply geostatistical techniques for the acquisition of prior model information ...
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