Results 271 to 280 of about 20,321 (318)
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1986
In this chapter, a simplified processing stream for marine data is described, and then modifications in the stream are included along with modification rationales. The basic marine processing stream is given in table 10.1. Then a simplified processing stream for land data and modifications thereof are described.
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In this chapter, a simplified processing stream for marine data is described, and then modifications in the stream are included along with modification rationales. The basic marine processing stream is given in table 10.1. Then a simplified processing stream for land data and modifications thereof are described.
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Point process analysis for Italian seismic activity
Applied Stochastic Models and Data Analysis, 1996Stochastic models for earthquakes prediction in four Italian most seismic regions are considered. Data on the earthquakes occurrence times (\(t_j\)) and magnitudes (\(m_j\)) since 1860 were used. The models are based on the conditional intensity of the marginal point process \(N(t)\) (the number of earthquakes till time \(t\)), \[ \lambda(t)=E\{(dN(t ...
B. Betro', LADELLI, LUCIA MARIA
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The Leading Edge, 2002
On the occasion of THE LEADING EDGE'S 20th anniversary, it seems appropriate to pause and consider progress in our science over that period of time. My topic is seismic data processing, and many of the advances discussed here were published first in GEOPHYSICS or other peer-reviewed journals, then appeared in more digestible form in the pages of TLE ...
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On the occasion of THE LEADING EDGE'S 20th anniversary, it seems appropriate to pause and consider progress in our science over that period of time. My topic is seismic data processing, and many of the advances discussed here were published first in GEOPHYSICS or other peer-reviewed journals, then appeared in more digestible form in the pages of TLE ...
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Parallel Seismic Data Processing
1999In Geophysics measured seismic data sets need to be analyzed using numerical operators. Such operators consist of Fourier Transforms, integral transforms, convolutions and other mathematical concepts. The result of such inversion methods is a realistic description of the subsurface of the earth.
Martin Karrenbach +2 more
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The Journal of the Acoustical Society of America, 1967
Frequency filtering and spatial filtering have been usefully applied for many years to the problem of extraction of signals from noise in active seismic exploration and in passive earthquake surveillance. Because broadband (octave or more) transients are of interest in both areas, frequency dependent spatial filtering has been frequently used.
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Frequency filtering and spatial filtering have been usefully applied for many years to the problem of extraction of signals from noise in active seismic exploration and in passive earthquake surveillance. Because broadband (octave or more) transients are of interest in both areas, frequency dependent spatial filtering has been frequently used.
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Inversion QC - Integrating Seismic Inversion and Seismic Data Processing
Proceedings, 2013Seismically guided reservoir description involves estimating and mapping reservoir properties such as lithology, porosity, and pore fluid. The estimates of reservoir properties are derived from seismic attributes that are obtained from prestack seismic inversion by means of some form of amplitude variation with offset (AVO) analysis and inversion ...
S.P. McHugo, M. Leathard, A. Dippenaar
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Distributed Seismic Unix: a tool for seismic data processing
Concurrency: Practice and Experience, 1999This paper describes a distributed system called Distributed Seismic Unix (DSU). DSU provides tools for creating and executing application sequences over several types of multiprocessor environments. DSU is designed to assist geophysicists in developing and executing sequences of Seismic Unix (SU) applications in clusters of workstations as well as on ...
Alejandro E. Murillo, Jean Bell
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2016
From mid 1950s till mid 1960s a jump in the seismic data processing took place. Within this interval, the analogue magnetic-tape recording and processing, followed by the introduction of digital technique, were introduced.
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From mid 1950s till mid 1960s a jump in the seismic data processing took place. Within this interval, the analogue magnetic-tape recording and processing, followed by the introduction of digital technique, were introduced.
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1983
In terms of linear filter theory, the seismic signal process is the convolution of the seismic pulse with the earth’s reflectivity. This process is a mixture of determinism and randomness, because the seismic pulse has a deterministic waveform, while the reflectivity is a random function.
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In terms of linear filter theory, the seismic signal process is the convolution of the seismic pulse with the earth’s reflectivity. This process is a mixture of determinism and randomness, because the seismic pulse has a deterministic waveform, while the reflectivity is a random function.
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Computer Processing of Seismic Refraction Data
Exploration Geophysics, 1979In the generalised reciprocal method (GRM) of seismic refraction interpretation described by Palmer (1974, in prep.), the data processing and interpretation stages may be separated. The data processing stage is relatively simple but as it may involve handling considerable amounts of data, the use of a computer is desirable.
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