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  • 1
    Electronic Resource
    Electronic Resource
    Fault Lengths During the Patras 1993 Earthquake Sequence as Estimated from the Pulse Width of Initial P Wave (1998)
    Springer
    Pure and applied geophysics 152 (1998), S. 75-89 
    Details
    ISSN: 1420-9136
    Keywords: Key words: Pulse width, source length.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract —The pulse width of the initial P wave was measured for three clusters of the aftershock sequence of the Patras (5.4 M S  ) July 1993 earthquake. The data set consists of pulse width measure ments of 250 microearthquakes recorded at a low-noise station of the University of Patras Seismological Network between 4-7-1993 and 1-8-1993. The statistical relation between the fault length and the earthquake magnitude was established for each one of the three clusters and is compared with other published relations. The relation also, between seismic moment and fault length was examined and showed a dependence upon the prevailing tectonic regime.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000240050142
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    Paper (German National Licenses)
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  • 2
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    Rapid assessment of S-wave profiles from the inversion of multichannel (2006)
    Details
    Publication Date: 2019-11-04
    Description: The importance of detailed knowledge of the shear-wave velocity structure of the upper geological layers was recently stressed in strong motion studies. In this work we describe an algorithm which we have developed to infer the 1D shear wave velocity structure from the inversion of multichannel surface wave dispersion data (ground-roll). Phase velocities are derived from wavenumber-frequency stacks while the inversion process is speeded up by the use of Householder transformations. Using synthetic and experimental data, we examined the applicability of the technique in deducing S-wave profiles. The comparison of the obtained results with those derived from cross-hole measurements and synthesized wave fields proved the reliability of the technique for the rapid assessment of shear wave profiles during microzonation investigations.
    Description: JCR Journal
    Description: open
    Keywords: Rayleigh waves ; shear wave profiles ; site effect ; microzonation ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous ; 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis ; 05. General::05.04. Instrumentation and techniques of general interest::05.04.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Format: 3458869 bytes
    Format: application/pdf
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    PAPER (OA)
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