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Theoretical pv-magnitude calibrating curves for deep foci

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Рaссчumaны mеореmuческuе кaлuбровочные крuвые крuвые ¶rt;ля оnре¶rt;еленuя мaгнumу¶rt;ы Р-волн nо сре¶rt;неnерuо¶rt;ноŭ annaрamуре ¶rt;ля мо¶rt;елu Землu РREМ в шuроком ¶rt;uanaзонеглубuн очaгa. Полученные крuвuе оmрaжaюm рaсnре¶rt;еленuе naрaмеmров мо¶rt;елu без учеma uзлученuя uз uсmочнuкa. Шuроко nрuменяемые эмnuрuческuе кaлuбровочные крuвые Гуmенбергa былu срaвнены с mеореmuческuмu крuвымu. Былu нaŭ¶rt;ены чеmкuе рaзлuчuя nо форме u уровням крuвых. Тaкuм обрaзом, еслu nрuняmь мо¶rt;ель РREМ nре¶rt;сmaвumельноŭ ¶rt;ля сmроенuя Землu, mо необхо¶rt;uмо nроверumь эмnuрuческuе кaлuбровочные крuвые σ(D, h) ¶rt;ля оnре¶rt;еленuя мaгнumу¶rt;ы, коmорые в нaсmоящее время uсnользуюmся в сеŭсмологuческоŭ nрaкmuке.

Summary

The theoretical medium period PV-magnitude calibrating curves were computed for the Earth model PREM and a wide range of focal depths. The calculated set of curves reflects the distribution of model parameters, the influence of source radiation was not taken into account. The widely used Gutenberg's empirical calibrating curves were compared with the theoretical ones. Pronounced deviations in the shape and differences in the level of isolines were found. Thus, if model PREM is considered to be representative of the Earth's structure, the empirical calibrating curves σ(D, h) for magnitude determination currently used in seismological practice, have to be verified.

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Authors and Affiliations

  1. Institute of Geophysics, Charles University, Prague

    Jaromír Janský

  2. Geophysical Institute, Czechosl. Acad. Sci., Prague

    Jan Zedník & Vít Kárník

Authors
  1. Jaromír Janský
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  2. Jan Zedník
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  3. Vít Kárník
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Janský, J., Zedník, J. & Kárník, V. Theoretical pv-magnitude calibrating curves for deep foci. Stud Geophys Geod 32, 264–271 (1988). https://doi.org/10.1007/BF01637884

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  • DOI: https://doi.org/10.1007/BF01637884

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