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Bull Earthquake Eng (2012) 10:11091131 DOI 10.1007/s10518-012-9353-z
ORIGINAL RESEARCH PAPER
23 November 1980 IrpiniaBasilicata earthquake (Southern Italy): towards a full knowledgeof the seismic effects
F. T. Gizzi M. R. Potenza C. Zotta
Received: 7 July 2011 / Accepted: 5 April 2012 / Published online: 16 May 2012 Springer Science+Business Media B.V. 2012
Abstract This paper overviews the procedures and tools used for a systematic study of the macroseismic consequences caused by a strong earthquake that struck Southern Italy. The event referred to the 23 November 1980 (Io = X MCS, Ms = 6.9) which affected the Campania and Basilicata regions. Two aspects are addressed here: to broaden the knowledge of the macroseismic eld and delineate damage maps of the sites affected on an urban scale. The target area of this study is the Basilicata region about which the current macroseismic information is poor. This research study, based only on unpublished documentary sources, supplies about 50 new assessments and about 30 new re-assessments of the macroseismic site intensity (MCS scale) as outputs. Moreover, about 80 thematic maps showing the damage pattern of the sites affected are also supplied. It is the rst time that a large earthquake has been the subject of such extensive studies from a macroseismic point of view, with special attention to the analysis of damage effects at town scale.
Keywords Macroseismic intensity Damage maps Documentary sources Site effects
1 Introduction
Seismic history informs us that in the past Italy experienced numerous strong earthquakes that caused deep changes in the urban, socio-economic, and natural contexts.
The 23 November 1980 IrpiniaBasilicata (Southern Italy) event is one of these also because it is among the strongest earthquakes ever occurred in Italy.
This event, consisting of at least three main rupture episodes occurred at 0, 18 and 40 s from the rst shock, was assigned a surface-wave magnitude Ms = 6.9 (Pantosti and Valensise 1993).
Electronic supplementary material The online version of this article (doi:http://dx.doi.org/10.1007/s10518-012-9353-z
Web End =10.1007/s10518-012-9353-z ) contains supplementary material, which is available to authorized users.
F. T. Gizzi (B) M. R. Potenza C. Zotta
Institute for Archaeological and Monumental Heritage, National Research Council,C.da S.Loja, 85050 Tito Scalo, PZ, Italy e-mail: [email protected]
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Primary and secondary effects brought...