Anisotropic amplitude variation of the bottom-simulating reflector beneath fracture-filled gas hydrate deposit
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Cites background from "Anisotropic amplitude variation of ..."
...The study of amplitude variation of BSR with incidence angle in the vicinity of site NGHP–01–10 also suggests that the medium is anisotropic and realistic gas hydrate saturation as well as fracture azimuth can be estimated assuming the anisotropic rock physics model (Sriram et al., 2013)....
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References
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"Anisotropic amplitude variation of ..." refers background in this paper
...It is stable under high pressure and low temperature conditions within zones referred to as gas hydrate stability zone (GHSZ) [Sloan, 1990]....
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3,787 citations
"Anisotropic amplitude variation of ..." refers background in this paper
...The parameter e represents the fractional difference between the horizontal and vertical P-wave velocities, and d represents the normalized second derivative of P-wave phase velocity at vertical incidence [Thomsen, 1986]....
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1,585 citations
"Anisotropic amplitude variation of ..." refers background or methods in this paper
...Similar to modeling of fracture-filled gas hydrate layer, the Backus average [Backus, 1962] is used to estimate the effective medium properties of fracture-filled free gas bearing sediment which depend on the properties of free gas bearing sediments with saturations 0–10%, the properties of…...
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...Therefore, we follow Lee and Collett [2009] to estimate the effective medium properties of the gas hydrate bearing sediment in the KG offshore basin using the Backus averaging technique [Backus, 1962; section C]....
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...It is valid when the thicknesses of the stratified layers are less than the seismic wavelength [Backus, 1962]....
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...When the layer thicknesses are much smaller than the seismic wavelength, the effective medium behaves as transversely isotropic with symmetry axis oriented normal to the layering [Backus, 1962; White, 1965]....
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...Similar to modeling of fracture-filled gas hydrate layer, the Backus average [Backus, 1962] is used to estimate the effective medium properties of fracture-filled free gas bearing sediment which depend on the properties of free gas bearing sediments with saturations 0–10%, the properties of water-saturated sediments and the volume fraction of free gas bearing sediment (fracture density)....
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1,115 citations
"Anisotropic amplitude variation of ..." refers methods in this paper
...The intercept (A) and the gradient (B) of the BSR reflection coefficients are estimated by fitting the data with the three-term Shuey’s approximation Rpp(θ) =A+B sin 2(θ) +C sin 2(θ)tan 2(θ) to the Zoeppritz equations [Shuey, 1985]....
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728 citations
"Anisotropic amplitude variation of ..." refers background or methods in this paper
...[42] The variable a represents the consolidation parameter [Pride et al., 2004], and the subscripts ma, w, and h refer to sediment grain, water and gas hydrate, respectively....
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...The TPBE model (section A) is defined for the consolidated marine sediments based on the empirical relation between the dry frame moduli and the matrix moduli [Pride, 2003; Pride et al., 2004]....
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...…b2ð Þ; where 1 Kav ¼ b1 fð Þ kma þ fw kw þ fh kh ; b1 ¼ fas 1þ að Þ 1þ afasð Þ ;b2 ¼ fas 1þ gað Þ 1þ gafasð Þ ; and g ¼ 1þ 2a 1þ a : [42] The variable a represents the consolidation parameter [Pride et al., 2004], and the subscripts ma, w, and h refer to sediment grain, water and gas hydrate,…...
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...[41] The TPBE model is defined for unconsolidated marine sediments based on the empirical relation between the frame andmatrixmoduli [Pride, 2003; Pride et al., 2004]....
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...[Lee and Waite, 2008] [41] The TPBE model is defined for unconsolidated marine sediments based on the empirical relation between the frame andmatrixmoduli [Pride, 2003; Pride et al., 2004]....
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