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Web-based macroseismic survey in Italy: method validation and results

Author

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  • Paola Sbarra
  • Patrizia Tosi
  • Valerio De Rubeis

Abstract

A new method of macroseismic surveys, based on voluntary collaboration through the Internet, has been running at the Istituto Nazionale di Geofisica e Vulcanologia (INGV) since July 2007. The macroseismic questionnaire is addressed to a single non-specialist; reported effects are statistically analysed to extrapolate a probabilistic estimate of Mercalli Cancani Sieberg and European Macroseismic Scale intensities for that observer. Maps of macroseismic intensity are displayed online in almost real time and are continuously updated when new data are made available. For densely inhabited zones, we have received reports of felt effects for even very small events (M = 2). Six earthquakes are presented here, showing the ability of the method to give fast and interesting results. The effects reported in questionnaires coming from three towns are carefully analysed and assigned intensities are compared with those derived from traditional macroseismic surveys, showing the reliability of our web-based method. Copyright Springer Science+Business Media B.V. 2010

Suggested Citation

  • Paola Sbarra & Patrizia Tosi & Valerio De Rubeis, 2010. "Web-based macroseismic survey in Italy: method validation and results," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 54(2), pages 563-581, August.
    • Handle: RePEc:spr:nathaz:v:54:y:2010:i:2:p:563-581
    DOI: 10.1007/s11069-009-9488-7
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    Cited by:

    1. Francesco Finazzi, 2020. "Fulfilling the information need after an earthquake: statistical modelling of citizen science seismic reports for predicting earthquake parameters in near realtime," Journal of the Royal Statistical Society Series A, Royal Statistical Society, vol. 183(3), pages 857-882, June.
    2. Paola Sbarra & Patrizia Tosi & Valerio Rubeis & Diego Sorrentino, 2020. "Quantification of earthquake diagnostic effects to assess low macroseismic intensities," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 104(3), pages 1957-1973, December.

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