AHEAD European Archive of Historical EArthquake DataEuropean Archive of Historical EArthquake Data

Elenco studiData sources
Elenco terremotiEarthquakes

Castelli and Bernardini, 2006

Castelli V., Bernardini F., 2006. Unearthing earthquakes in the Sienese Crete: how we improved the seismic catalogue of a low seismicity area. Proc. First European Conference on Earthquake Engineering and Seismology, Geneva, Switzerland, 3-8 September 2006, Paper Number: 837, 9 pp.

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The Val d'Orcia is one of the latest Italian entries (2004) of the UNESCO World Heritage List. Its distinctive landscape of rolling chalk hills (the Crete), shaped in the 14th and 15th centuries to reflect an idealized model of good governance, and celebrated in the paintings of the Sienese school, has become an icon of the Renaissance that profoundly influenced the development of landscape thinking worldwide. Preserving the cultural wealth embodied in this corner of Tuscany is also a matter of assessing its seismic hazard correctly. As a first step toward this end, we revised the local seismic history. According to the current national catalogue, the Crete are a lowseismicity area intervening between two earthquake clusters centered on Siena (north) and Mount Amiata (south); the local earthquakes on record are very few, with middle to low epicentral intensities and none earlier than the second half of 17th century. However, the fortuitous discovery of a recent (1802) damaging earthquake unrecorded by any of the extant catalogues suggested that the current interpretation was more likely to derive from the little interest shown in the area having by previous studies rather than from an actual lack of data. By retrieving the memory of several forgotten damaging earthquakes (from 1449 onwards) and increasing the data set of the already known events, our study does significantly improve the Crete seismic history.

Nell'archivio ci sono In the archive there are 8 terremoti provenienti da questo studio: earthquakes considered from this study:

molto grandiextra large
molto piccolivery small
non parametrizzatinot determined

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
EQ in
Riferim. in
1449 10 16Asciano  2  7    
1498 04 11Siena-Pienza  2  D    
1545 11 16Campagna Sienese  6  7-8    
1679 03 24Montepulciano  4  6-7    
1726 04 19Monte Oliveto Maggiore  3  HD    
1781 01 03Monte Oliveto Maggiore  12  HD    
1798 09 08Val d'Orcia  4  HD    
1802 10 31Val d'Orcia  11  HD