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  • Earthquake
  • Elsevier  (1)
  • Springer  (1)
  • Blackwell Publishing Ltd
  • Institute of Electrical and Electronics Engineers (IEEE)
  • 1975-1979  (2)
  • 1
    Electronic Resource
    Electronic Resource
    The spatial and temporal changes inV p /V s before strong earthquakes in Kamchatka (1977)
    Springer
    Pure and applied geophysics 115 (1977), S. 1047-1060 
    Details
    ISSN: 1420-9136
    Keywords: Earthquake ; Velocity ; Prediction ; Epicenter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A method was developed to obtain from a signal station the spatial and temporal distribution ofV p /V s ratios before earthquakes of magnitude〉6. It was shown thatV p /V s values strongly depend upon the relative positions of the stations, the future large earthquake and the foci of the smaller earthquakes used forV p /V s determination. The appearance of a zone of anomalousV p /V s values with linear dimensions of the order of 100 km was noted at least 4 years before a deep earthquake of magnitude 7. Similar size anomalous zones were detected one year before some magnitude 6 earthquakes. V p /V s values decreased by a small but distinct amount during this time. Additionally, local short term minima inV p /V s ratios were observed some months before the major event. The epicenters of the large earthquakes were located within the 100 km size zone where the gradients of theV p /V s field were largest.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00881226
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    Paper (German National Licenses)
    Fulltext
  • 2
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    High-resolution group velocity analysis (1978)
    Elsevier
    In:  Bull., Polar Proj. OP-O3A4, Computer-Aided Seismic Analysis and Discrimination, London, Elsevier, vol. 16, no. 4, pp. 97-109, (ISBN 0080419208)
    Details
    Publication Date: 1978
    Keywords: Earthquake ; Seismics (controlled source seismology) ; Discrimination ; Velocity analysis
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    BIBLIOGRAPHY SEISMOLOGY
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