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pro vyhledávání: '"Samuel H. Bickel"'
Autor:
Samuel H. Bickel
Publikováno v:
GEOPHYSICS. 65:652-655
The parabolic approximation does not accurately model residual moveout for long-offset marine data. Consequently the focusing power of the parabolic Radon transform is degraded. Maeland (1998) analyzes this problem by deriving the envelope of hyperbo
Autor:
Samuel H. Bickel
Publikováno v:
GEOPHYSICS. 58:1629-1633
The seismic impulse response of a constant Q attenuating material has the same mathematical form as the density function for the Pareto‐Levy probability law. Since this law is stable it follows that the seismic pulse is closed under convolution. Th
Autor:
Samuel H. Bickel
Publikováno v:
GEOPHYSICS. 55:266-276
The conversion of time horizons to depth is fundamental to exploration geophysics. The interval velocity used in the conversion is often estimated from the stacking velocity, assuming that each layer’s interval velocity is homogeneous. However, eve
Autor:
Samuel H. Bickel
Publikováno v:
SEG Technical Program Expanded Abstracts 1998.
This maximum depth principle for computing horizon depths is a dual to Fermat’s minimum time principle for computing traveltimes. With this proposition a reflecting horizon is mapped from time to depth by finding the envelope of all possible depths
Autor:
R. R. Natarajan, Samuel H. Bickel
Publikováno v:
GEOPHYSICS. 50:1426-1439
Often the information content of measured signals from distance sources is hidden, because the signal distorts, weakens, and loses resolution as it propagates. For seismic energy traveling in the earth, these propagation effects can be approximated b
Autor:
Samuel H. Bickel, D. R. Martinez
Publikováno v:
GEOPHYSICS. 48:887-899
To improve the resolution of seismic events, one often designs a Wiener inverse filter that optimally (in the least‐squares sense) transforms a measured source signature into a spike. When this filter is applied to seismic data, the bandwidth of an
Autor:
Samuel H. Bickel
Publikováno v:
GEOPHYSICS. 47:1174-1184
Ristow and Jurczyk (1975) proposed a mixed‐phase Vibroseis® inverse filter which is the usual minimum phase spiking deconvolution filter convolved with a Weiner‐Levinson minimum phase wavelet having the same amplitude spectrum as the Vibroseis w
Autor:
Samuel H. Bickel
Publikováno v:
Management Science. 16(3):221-226
By taking the goal of optimal portfolio management as long term maximization of wealth, whether it be via long or short term gains, portfolio selection can be based upon objective criteria instead of risk preference. In this paper we wish to relate t
Autor:
Herbert W. Swan, Samuel H. Bickel
Publikováno v:
SEG Technical Program Expanded Abstracts.
Autor:
David R. Martinez, Samuel H. Bickel
Publikováno v:
SEG Technical Program Expanded Abstracts 1983.