1976 Friuli earthquake

The 1976 Friuli earthquake, also known in Italy as Terremoto del Friuli (Friulian earthquake), took place on May 6 with a moment magnitude of 6.5 and a maximum Mercalli intensity of X (Extreme). The shock occurred in the Friuli region in northeast Italy near the town of Gemona del Friuli. 990 people were killed[5], up to about 3,000 were injured, and more than 157,000 were left homeless.

1976 Friuli earthquake
UTC time1976-05-06 20:00:12
ISC event713583
USGS-ANSSComCat
Local dateMay 6, 1976 (1976-05-06)
Local time20:00:13[1]
Magnitude6.5 Mw[1]
Depth10 km (6.2 mi)[1]
Epicenter46.37°N 13.32°E / 46.37; 13.32[1]
TypeDip-slip[2]
Areas affectedItaly
Yugoslavia
Max. intensityX (Extreme)[3]
Foreshocks4.5 mb May 6 at 19:59[4]
Casualties990 dead[2]
1,700–3,000 injured[2]

Earthquake
See also: Periadriatic Seam

The quake struck at 21:00:13 (20:00:13 UTC). Seventy-seven villages in the Friuli region were affected. Gemona del Friuli was greatly damaged and despite extensive emergency measures and international aid by the end of 1976 15,000 people were still living in camping trailers, 1000 in tents and 25000 in evacuation centres. The damage was estimated at $4.25 million.[6] Much of the town has since been reconstructed. The tremor was felt in Venice as well as neighboring Austria, Switzerland and Slovenia (at the time SFR Yugoslavia). In Slovenia, the upper Soča valley and the Brda area was particularly affected, with the village of Breginj nearly completely demolished. The earthquake damaged several buildings in Nova Gorica and was felt also in the Slovenian capital, Ljubljana.

USGS ShakeMap showing the intensity of the 1976 Friuli earthquake

The Italian Government nominated Chamber of Deputies member Giuseppe Zamberletti as coordinator of aid efforts on behalf of the regional administration. The national funds were assigned to the reconstruction of the damaged buildings by Zamberletti and the regional council of Friuli Venezia Giulia. From September to December 1976 all the earthquake victims were accommodated into prefabricated buildings, in order to better cope with the winter. Many local inhabitants lived in the Government supplied trailers for many years while homes were rebuilt. After Zamberletti's mandate the regional government of Friuli Venezia Giulia was able to completely rebuild many towns, thanks to an accurate resource management, however some towns took over a decade to fully recover. Nowadays, many years after the tragedy, the State's intervention, the earthquake management and reconstruction in Friuli Venezia Giulia are seen as a great example of efficiency and reliability. (Citation needed)

Aftershocks

There were many aftershocks with the two sets of strong shocks on 11 September (16:31, 5.5 Msand 16:35, 5.4 Ms ) and again on 15 September (3:15, 6.0 Ms  and 9:21, 5.9 Ms ) 1976.[4]

Aftermath

This event also spurred the foundation of the Protezione Civile (the Italian Civil Defense body that deals with nationwide prevention and management of emergencies and catastrophic events).

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See also

References
  1. ISC (2015), ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009), Version 2.0, International Seismological Centre
  2. USGS (September 4, 2009), PAGER-CAT Earthquake Catalog, Version 2008_06.1, United States Geological Survey
  3. National Geophysical Data Center / World Data Service (NGDC/WDS) (1972), Significant Earthquake Database (Data Set), National Geophysical Data Center, NOAA, doi:10.7289/V5TD9V7K
  4. Cipar, John (1980), "Teleseismic observations of the 1976 Friuli, Italy earthquake sequence", Bulletin of the Seismological Society of America, Seismological Society of America, 70 (4): 966
  5. Lessi, Davide (2016-05-06). "Friuli, 40 anni dopo spunta un'altra vittima del sisma" [Friuli earthquake, 40 years later another victim is added to the count]. La Stampa (in Italian). Turin. Retrieved 2020-04-19.
  6. Wainwright, John; Thornes, John B. (2003). Environmental Issues in the Mediterranean. Routledge. p. 22. ISBN 978-0203495490.

Further reading
  • Stefano Parolai, Luca Moratto, Michele Bertoni, Chiara Scaini, Alessandro Rebez; Could a Decentralized Onsite Earthquake Early Warning System Help in Mitigating Seismic Risk in Northeastern Italy? The Case of the 1976 Ms 6.5 Friuli Earthquake. Seismological Research Letters doi: https://doi.org/10.1785/0220200177
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