50 km West of Angra do Heroísmo 38°49′N27°47′W / 38.81°N 27.78°W / 38.81; -27.78
Type
Strike-slip
Areas affected
Portugal Azores
Max. intensity
MMI VIII (Severe)–MMI IX (Violent)[1]
Tsunami
A small tsunami was registered in Angra do Heroismo
Casualties
73 dead, 400 injured
Striking the Autonomous Region of Azores on 1 January, the 1980 Azores Island earthquake killed 73 people and injured over 400, causing severe damage on the islands of Terceira and São Jorge. Measuring 6.9 on the moment magnitude scale, it also shook the islands of Pico and Faial, and resulted from a strike slip fracture, typical of other historical Azorean earthquakes.
In response to the earthquake, Portuguese president António Ramalho Eanes announced three days of national mourning, while relief efforts, initiated by agents of the local Air Force, were soon accompanied by government-supported agencies.
^"Significant Earthquake: AZORES: TERCEIRA, ANGRA DO HEROISMO". National Geophysical Data Center. 1 January 1980. Retrieved 23 June 2021.
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