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Meletti et al., 2020a

Meletti C., Camassi R., Castelli V., 2020. A Reappraisal of the Seismicity of Sardinia, Italy. Seismological Research Letters, 92, 2A, 1148-1158. https://doi.org/10.1785/0220200255

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Abstract

In popular opinion, Sardinia is the only nonseismic region of Italy. Most researchers are likely to agree, up to a point. Geology-wise, the Sardinia–Corsica block is among the stablest areas of the Mediterranean. History-wise, up to 2011, only one Mw 5.1 event located offshore Sardinia was listed by Italian seismic catalogs (13 November 1948). Seismic networks record only a few, low energy (Mw < 5) events, mostly located offshore and with little or no effects on land. Seismic hazard in Sardinia is very low. “Low,” yes, but not “totally lacking.” We present the results of a recent reappraisal of Sardinian seismicity. We gathered information on three major earthquakes (1616, 1771, and the 1948–1949 sequence). Another sequence (January–March 1901) was re-evaluated, identifying its previously unknown main event. It was confirmed that some earthquakes (1870, 1906, 1922, and 1924) had low magnitudes and scarce to nil macroseismic effects, whereas some other turned out either very doubtful or wholly fictitious (1835, 1838, 1855, and 1898). The seismic hazard of Sardinia can now be reassessed on a sounder basis than before. We hope that our work will help the people of Sardinia to improve their awareness of living in a seismic land, if with a low level of seismicity.

Nell'archivio ci sono In the archive there are 34 terremoti provenienti da questo studio: earthquakes considered from this study:


   
molto grandiextra large
   
grandilarge
   
medimedium
   
piccolismall
   
molto piccolivery small
non parametrizzatinot determined
falsifake
 

Clicca sulla riga per individuare il terremoto sulla mappa o sulla lente per ottenere più informazioni.Click the row to highlight the earthquake on the map or the lens to obtain more information.

  DataDate    Area epicentraleEpicentral area    MDPs   Imax  EQ in
CPTI15
EQ in
CPTI15
Riferim. in
CPTI15
CPTI15
reference
  PDF PDF 
1616 06 04 14Sardegna merid.  10  D    
1619 06 24 16Sardegna merid.  1  4-5      
1771 08 17 13Sardegna merid.  2  3      
1771 08 17 18Sardegna merid.  7  5    
1835 03 06Sardegna merid.  1  3      
1838 02 02Agro sassarese  -  -    
1855 06 11Cagliari  -  -      
1870 07 04 17 45Nuorese  4  5      
1898 12 15San Vito  -  -      
1901 01 18 16 30Gergei  7  5      
1901 01 18 17Gergei  1  F      
1901 03 22 13Gergei  1  4-5      
1906 04 03 16 20Sardegna Settentrionale  6  3      
1922 07 18 20 30Nuorese  1  3      
1922 07 18 22 30Nuorese  1  3      
1924 01 24 02 22Sardegna Nord. Occ.  -  -    
1948 11 13 09 52Mar di Sardegna  58  5-6    
1948 11 13 12Mar di Sardegna  2  F      
1948 11 13 12 48Mar di Sardegna  1  F      
1948 11 13 22 45Mar di Sardegna  1  3      
1948 11 16 21 57Mar di Sardegna  10  5      
1948 11 17 00Mar di Sardegna  2  3      
1948 11 20 01Mar di Sardegna  2  4-5      
1948 11 20 02 07Mar di Sardegna  1  F      
1948 11 20 02 15Mar di Sardegna  2  4-5      
1948 11 20 13 45Mar di Sardegna  1  4-5      
1948 11 20 15 36Mar di Sardegna  1  5-6      
1948 11 21 21 50Mar di Sardegna  4  5-6      
1948 12 08 04 30Sassarese  4  3      
1948 12 08 13 15Sassarese  4  3      
1948 12 08 13 45Sassarese  7  5-6      
1948 12 08 23Sassarese  3  3      
1948 12 29 21 45Mar di Sardegna  5  5      
1949 01 06 17 30Mar di Sardegna  4  5-6