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Digitale Medien

DETERMINISTIC ESTIMATION OF A WAVELET USING IMPEDANCE TYPE TECHNIQUE (1985)

LOEWENTHAL, D. ; LEE, S. S. ; GARDNER, G. H. F.

Oxford, UK : Blackwell Publishing Ltd

Geophysical prospecting 33 (1985), S. 0

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ISSN: 1365-2478

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Geologie und Paläontologie , Physik

Notizen: A new deterministic technique for estimating a wavelet suggested by Loewenthal and Jakubowicz requires measurement of both pressure and vertical particle velocity. Through construction of the impedance function a deterministic estimation of the wavelet and the reflectivity can be obtained.This idea is tested for a one-dimensional model. The test is carried out by forming a synthetic seismogram of both pressure and particle velocity and checking the formulas for obtaining the estimated wavelet under noisy conditions.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1365-2478.1985.tb00791.x

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Digitale Medien

Permeability and the Size Distribution of Pores (1958)

WYLLIE, M. R. J. ; GARDNER, G. H. F.

[s.l.] : Nature Publishing Group

Nature 181 (1958), S. 477-477

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] The physical model, which we believe can be used advantageously to represent actual porous rocks, may be conceived in the following way. Consider a cylindrical bundle of' straight capillary tubes the radii of which have a suitable range. Cut this bundle into thin slices, of equal thickness, ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/181477a0

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Digitale Medien

Rigid-Body Motions in Special Relativity (1952)

GARDNER, G. H. F.

[s.l.] : Nature Publishing Group

Nature 170 (1952), S. 243-243

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] In the space-time of Minkowski, where a point has the four co-ordinates x1, x2, x3, x4 (= ict), let a world line be determined by the equations: xr = ar + b1μ1r + b2μr + b3μ3rr + b r, (r = 1, 2, 3, 4). (1) Here a1, a2, a3 are three arbitrary functions of a parameter ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/170243a0

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