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...igure 2]]), the coefficient reflections will be the difference of acoustic impedance (product of density and P velocity) over the sum. ===Class 1 : High impedance Gas-Sandstone===

...c trace is parameter of seismic wave that represents contrast of acoustics impedance on the boundary of bedding rock on a geophone.<ref name=Abdullah>Abdullah, ...geological model in the subsurface. The value of RC depend on contrast of impedance acoustic (IA) where contrast of IA is proportional to RC, RC is proportiona

...ting from [http://wiki.seg.org/wiki/Dictionary:Acoustic_impedance acoustic impedance] contrasts. .... The plots of individual wavelets in a synthetic seismogram show how each impedance interface contributes to the individual reflections. Vail<ref name=ch21r44

* acoustic impedance see impedance * impedance http://wiki.seg.org/wiki/Dictionary:Acoustic_impedance

* A computer program computes the acoustic impedance log from the sonic velocities and the density data. The data are often aver * The resulting acoustic impedance curve is then used by the program to compute reflection coefficients at eac

# ''AI'' (acoustic impedance) = this property is sensitive towards the change in lithology and fluid con ...V_s * Rho)^2 = SI^2</math></p><p>as MR is strongly controlled by the shear impedance (SI) and shear modulus (μ), the magnitude of this property does not really

...of elastic properties of a rock, there are Acoustic Impedance (AI), Shear Impedance (SI), Poisson Ratio (σ), etc. and most of them depend on the wave velocity ..._Log_Analysis_Fig-10A.png|Figure 10A-Crossplot between depth and acoustic impedance (AI).

...Reflection Seismic reflections] are generated where there is a contrast in impedance (which is the product of velocity and density).

...ate a geologic [[cross section]] seismically, showing stratal surfaces and impedance contrasts.

...k, a relationship can then be established between the seismic estimates of impedance and the rock properties determined from the logs or in the laboratory. (For

...gnetic fields are measured at some distance from the transmitter. The wave impedance of the electromagnetic wave at the receiver is calculated from the electric ...p.</ref> The low frequency electromagnetic field is measured, and the wave impedance is calculated and expressed in terms of the resistivity of the subsurface.

| Acoustic impedance contrasts; borehole geometry

...data sets, including geochemical analysis of cores and sea-floor acoustic impedance patterns and orthocontouring of structure maps, and formulated a hypothesis

...coustic term and a [[shear]] term. The acoustic term depends only on the [[impedance]] of the two layers and the [[angle of incidence]]. The shear term depends

...s influence fluid flow in each area. These features may provide less of an impedance to the flow of highly mobile gas in the Northwestern Europe gas fields than

...relative to the seismic frequency. They will also need to show an acoustic impedance contrast large enough for them to be seen on seismic sections.<ref name=Web

...rix porosity interaction or at least determine if there is any evidence of impedance to cross-flow<ref name=pt06r95 />) (see [[Porosity]]).

...ess of host rocks versus intrusive sills which are marked by high acoustic impedance values (Figure 3-5).

...sea. The strength of the reflected seismic energy depends on the acoustic impedance (AI) contrast at the boundary between two layers of rock. The AI is the pro

...s material were transported from topset to foreset (note the high acoustic impedance in warm colors). The aggradational clinoform 2 deposited during a transgres