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  • Seismology
  • Industrial Chemistry
  • Inorganic Chemistry
  • Springer  (7)
  • California Institute of Technology Pasadena  (5)
  • 1990-1994  (5)
  • 1950-1954  (7)
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Keywords
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of statistical physics 76 (1994), S. 703-723 
    ISSN: 1572-9613
    Keywords: Seismology ; migration ; scalar wave equation ; parallel computing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Prospecting for oil and gas resources poses the problem of determining the geological structure of the earth's crust from indirect measurements. Seismic migration is an acoustic image reconstruction technique based on the inversion of the scalar wave equation. Extensive computation is necessary before reliable information can be extracted from large sets of recorded data. In this paper a collection of “industrial” migration techniques, each giving rise to a data parallel algorithm, is outlined. Computer simulations on synthetic seismic data illustrate the problem and the approach.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 135 (1991), S. 61-75 
    ISSN: 1420-9136
    Keywords: Seismology ; seismic networks ; artificial intelligence ; expert systems ; automatic interpretation ; seismic event detection ; data compression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The focus-of-attention techniques implemented in SNA2, a knowledge-based system for seismogram interpretation, are presented. They consist of data compression of the input digital records, scanning of the compressed traces to detect candidate seismograms and extraction of seismogram features. A criterion is given to rate the clarity of seismograms; the clarity defines the order in which the system will consider them to build up the interpretation. The proposed techniques are simple and fast; they allow quick rejection of noise and focussing the attention of the system on the portions of traces containing relevant information.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 134 (1990), S. 79-92 
    ISSN: 1420-9136
    Keywords: Seismology ; earthquake prediction ; self-similarity ; algorithm CN ; Central Italy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The Time of Increased Probability (TIP) for the occurrence of a strong earthquake is determined in Central Italy. This is done with an algorithm that has been successfully applied in other regions of the world (algorithm CN, from the initials of California and Nevada, where the first diagnoses of TIPs were made). The use of normalized functions allows direct application of the orginal algorithm to the new region being studied, without anyad hoc adjustment of the parameters. Retrospective analysis carried on until 1986 shows that TIPs occupy 26 percent of the total time considered and precede four out of five strong earthquakes. Forward monitoring indicates the possible existence of a TIP started in May 1988. Several tests indicate that the results obtained are quite stable, even when using catalogues from different agencies. Apart from obvious practical interest, this research is essential for the worldwide investigation of self-similarity in the origin of strong earthquakes.
    Type of Medium: Electronic Resource
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  • 4
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    Springer
    In:  Amsterdam, 394 pp., Springer, vol. 46, no. XVI:, pp. 1-14, (ISBN: 0-387-30752-4)
    Publication Date: 1990
    Description: Consisting of more than 150 articles written by leading experts, this authoritative reference encompasses the entire field of solid-earth geophysics. It describes in detail the state of current knowledge, including advanced instrumentation and techniques, and focuses on important areas of exploration geophysics. It also offers clear and complete coverage of seismology, geodesy, gravimetry, magnetotellurics and related areas in the adjacent disciplines of physics, geology, oceanography and space science.
    Keywords: Textbook of geophysics ; Seismology ; Geodesy ; Gravimetry, Gravitation ; Electromagnetic methods/phenomena ; Applied geophysics ; PlanetologyT
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  • 5
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    Springer
    In:  Berlin, Springer, vol. 159, no. 22, pp. 662-664, (ISBN 0-470-87000-1 (HB), ISBN 0-470-87001-X (PB))
    Publication Date: 1990
    Keywords: Seismology ; Earthquake precursor: prediction research ; Earthquake ; Textbook of geophysics
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  • 6
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    California Institute of Technology Pasadena
    In:  Seismological Laboratory Bulletin, Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 1953, no. 6, pp. 98, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1954
    Keywords: Earthquake catalog ; Seismology ; Seismicity
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  • 7
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    California Institute of Technology Pasadena
    In:  Seismological Laboratory Bulletin, Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 1951, no. 6, pp. 95, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1953
    Keywords: Earthquake catalog ; Seismology ; Seismicity
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  • 8
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    California Institute of Technology Pasadena
    In:  Seismological Laboratory Bulletin, Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 1952, no. 6, pp. 104, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1953
    Keywords: Earthquake catalog ; Seismology ; Seismicity
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  • 9
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    Springer
    In:  Professional Paper, Landolt Börnstein (6. Edition) III. Band: Astronomie und Geophysik, Berlin, Springer, vol. 7, no. XVI:, pp. 369-375, (ISBN: 3-540-23712-7)
    Publication Date: 1952
    Keywords: Seismology ; Seismicity
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  • 10
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    Springer
    In:  Professional Paper, Landolt Börnstein (6. Edition) III. Band: Astronomie und Geophysik, Berlin, Springer, vol. 7, no. XVI:, pp. 375-384, (ISBN: 3-540-23712-7)
    Publication Date: 1952
    Keywords: Seismology ; Waves
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  • 11
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    California Institute of Technology Pasadena
    In:  Seismological Laboratory Bulletin, Milano, California Institute of Technology Pasadena, vol. 1950, no. 6, pp. 102-103, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1951
    Keywords: Earthquake catalog ; Seismology ; Seismicity
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  • 12
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    California Institute of Technology Pasadena
    In:  Seismological Laboratory Bulletin, Milano, California Institute of Technology Pasadena, vol. 1949, no. 6, pp. 72, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1950
    Keywords: Earthquake catalog ; Seismology ; Seismicity
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