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A theoretical comparison among macroseismic scales used in Italy.

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Title: A theoretical comparison among macroseismic scales used in Italy.
Authors: Vannucci, Gianfranco1 (AUTHOR) gianfranco.vannucci@ingv.it, Lolli, Barbara1 (AUTHOR), Gasperini, Paolo1,2 (AUTHOR)
Source: Bulletin of Earthquake Engineering. Jul2024, Vol. 22 Issue 9, p4245-4263. 19p.
Subject Terms: *Reinforced concrete, *Research personnel, *Twentieth century, *Earthquake intensity, *Masonry
Geographic Terms: Italy
Abstract: In a recent work, we evidenced some empirical discrepancies between the macroseismic intensity estimates in Italy in the last decade with respect to those made previously. A possible reason might be the progressive adoption by Italian researchers of the European Macroseismic Scale (EMS) in place of the Mercalli Cancani Sieberg (MCS) scale mostly used up to 2009. In theory, in modern settlements where reinforced concrete (RC) buildings are increasingly replacing those in masonry, EMS should overestimate MCS because the former accounts for the lower vulnerability of RC whereas the latter does not because RC buildings were not considered at all by the MCS scale since they were almost absent at the time (1912–1932) when it was compiled by Sieberg. However, such theoretical inference is contradicted by the empirical evidence that, on average, MCS intensities really estimated in Italy over the past decade slightly overestimate EMS and not vice versa as it should be. A possible explanation is that the EMS scale had not been well calibrated to reproduce the MCS, as its authors intended to do. Another possible reason for the discrepancies between the last decade and the previous ones might be that the MCS scale applied today is not the same as that defined by Sieberg at the beginning of the twentieth century. In order to better understand the possible causes of such discrepancies, we present here a formal comparison between the definitions of the different degrees of such macroseismic scales. After such analysis, we might argue that another possible reason for the observed discrepancy may come from the inaccurate assessment of building vulnerability when assessing the EMS intensity. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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  Data: A theoretical comparison among macroseismic scales used in Italy.
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  Data: <searchLink fieldCode="JN" term="%22Bulletin+of+Earthquake+Engineering%22">Bulletin of Earthquake Engineering</searchLink>. Jul2024, Vol. 22 Issue 9, p4245-4263. 19p.
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  Data: *<searchLink fieldCode="DE" term="%22Reinforced+concrete%22">Reinforced concrete</searchLink><br />*<searchLink fieldCode="DE" term="%22Research+personnel%22">Research personnel</searchLink><br />*<searchLink fieldCode="DE" term="%22Twentieth+century%22">Twentieth century</searchLink><br />*<searchLink fieldCode="DE" term="%22Earthquake+intensity%22">Earthquake intensity</searchLink><br />*<searchLink fieldCode="DE" term="%22Masonry%22">Masonry</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Italy%22">Italy</searchLink>
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  Label: Abstract
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  Data: In a recent work, we evidenced some empirical discrepancies between the macroseismic intensity estimates in Italy in the last decade with respect to those made previously. A possible reason might be the progressive adoption by Italian researchers of the European Macroseismic Scale (EMS) in place of the Mercalli Cancani Sieberg (MCS) scale mostly used up to 2009. In theory, in modern settlements where reinforced concrete (RC) buildings are increasingly replacing those in masonry, EMS should overestimate MCS because the former accounts for the lower vulnerability of RC whereas the latter does not because RC buildings were not considered at all by the MCS scale since they were almost absent at the time (1912–1932) when it was compiled by Sieberg. However, such theoretical inference is contradicted by the empirical evidence that, on average, MCS intensities really estimated in Italy over the past decade slightly overestimate EMS and not vice versa as it should be. A possible explanation is that the EMS scale had not been well calibrated to reproduce the MCS, as its authors intended to do. Another possible reason for the discrepancies between the last decade and the previous ones might be that the MCS scale applied today is not the same as that defined by Sieberg at the beginning of the twentieth century. In order to better understand the possible causes of such discrepancies, we present here a formal comparison between the definitions of the different degrees of such macroseismic scales. After such analysis, we might argue that another possible reason for the observed discrepancy may come from the inaccurate assessment of building vulnerability when assessing the EMS intensity. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=178231441
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      – Type: doi
        Value: 10.1007/s10518-024-01921-0
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 19
        StartPage: 4245
    Subjects:
      – SubjectFull: Reinforced concrete
        Type: general
      – SubjectFull: Research personnel
        Type: general
      – SubjectFull: Twentieth century
        Type: general
      – SubjectFull: Earthquake intensity
        Type: general
      – SubjectFull: Masonry
        Type: general
      – SubjectFull: Italy
        Type: general
    Titles:
      – TitleFull: A theoretical comparison among macroseismic scales used in Italy.
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            NameFull: Vannucci, Gianfranco
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            NameFull: Lolli, Barbara
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            NameFull: Gasperini, Paolo
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          Dates:
            – D: 01
              M: 07
              Text: Jul2024
              Type: published
              Y: 2024
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              Value: 22
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              Value: 9
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            – TitleFull: Bulletin of Earthquake Engineering
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