The Sources of the Two Destructive Earthquakes of 1693 Retrieved by Automatic Inversions

This paper automatically inverted the macroseismic intensity data set of the two destructive earthquakes of 1693 in SE Sicily, and the paper retrieved the principal geometric and kinematic source parameters of the events. The authors stress that the new source inversions presented in the paper are automatic, without constraints, and original. Also, it is worth mentioning that the source parameters retrieved by inverting the macroseismic intensities by Barbano and Rigano substantially agree with those already found by inverting by the grid-search method, with tectonic constraints. In particular, this agreement holds for the epicentral coordinates and the fault plane solutions of the two earthquakes. The previous inversions identified a segmented source, in part mainly strike-slip (for the Jan. 9 shock) and in part 50% strike-slip and 50% dip-slip (Jan. 11); the present inversions identify an en-echelon structure in part strike-slip (Jan. 9) and in part dip-slip with a minor strike-slip component (Jan. 11). The differences come from the different intensity data sets that were inverted. However, the recurrence of these results for the two shocks of 1693 suggests that the solution of an inland complex source, crossing the Hyblean Plateau from SSW to NNe, is rather robust and stable.

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  • Corporate Authors:

    WIT Press

    Computational Mechanics, 25 Bridge Street
    Billerica, MA  United States  01821
  • Authors:
    • Pettenati, F
    • Gentile, F
    • Sirovich, L
  • Publication Date: 2005


  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 11-18
  • Monograph Title: Seismic Prevention of Damage: A Case Study in a Mediterranean City

Subject/Index Terms

Filing Info

  • Accession Number: 01010626
  • Record Type: Publication
  • ISBN: 1845640047
  • Files: TRIS
  • Created Date: Nov 21 2005 1:00PM