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Forecasting of the first hour aftershocks by means of the perceived magnitude

Author

Listed:
  • E. Lippiello

    (University of Campania “L. Vanvitelli”)

  • G. Petrillo

    (University of Campania “L. Vanvitelli”)

  • C. Godano

    (University of Campania “L. Vanvitelli”)

  • A. Tramelli

    (Istituto Nazionale Geofisica e Vulcanologia, Sez. Napoli, Osservatorio Vesuviano)

  • E. Papadimitriou

    (Aristotle University of Thessaloniki)

  • V. Karakostas

    (Aristotle University of Thessaloniki)

Abstract

The majority of strong earthquakes takes place a few hours after a mainshock, promoting the interest for a real time post-seismic forecasting, which is, however, very inefficient because of the incompleteness of available catalogs. Here we present a novel method that uses, as only information, the ground velocity recorded during the first 30 min after the mainshock and does not require that signals are transferred and elaborated by operational units. The method considers the logarithm of the mainshock ground velocity, its peak value defined as the perceived magnitude and the subsequent temporal decay. We conduct a forecast test on the nine M ≥ 6 mainshocks that have occurred since 2013 in the Aegean area. We are able to forecast the number of aftershocks recorded during the first 3 days after each mainshock with an accuracy smaller than 18% in all cases but one with an accuracy of 36%.

Suggested Citation

  • E. Lippiello & G. Petrillo & C. Godano & A. Tramelli & E. Papadimitriou & V. Karakostas, 2019. "Forecasting of the first hour aftershocks by means of the perceived magnitude," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10763-3
    DOI: 10.1038/s41467-019-10763-3
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