1983 Biga earthquake

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1983 Biga earthquake
1983 Biga earthquake is located in Turkey
1983 Biga earthquake
Date 5 July 1983 (1983-07-05)
Magnitude 6.1 Ms
Depth 10
Epicenter 40°19′26″N 27°13′19″E / 40.324°N 27.222°E / 40.324; 27.222Coordinates: 40°19′26″N 27°13′19″E / 40.324°N 27.222°E / 40.324; 27.222[1]
Areas affected Turkey
Landslides Yes
Casualties 5 killed

The 1983 Biga earthquake hit northwestern Turkey on 5 July 1983. Responsible for five deaths and approximately twenty-six casualties throughout Biga and Erdek and damage in Istanbul, the earthquake measured 6.1 on the surface wave magnitude scale. It shook places as far away as eastern Greece. The United States Geological Survey listed the earthquake among the "Significant Earthquakes of the World" for 1983.[2]


The Biga Peninsula is an area marked by active faults including strike-slip movement and en echelon divergent basins.

The earthquake was preceded by a foreshock nearly a year prior, and was followed by aftershock clusters.


  1. ^ NGDC. "Comments for the Significant Earthquake". Retrieved 27 August 2010. 
  2. ^ "Significant Earthquakes of the World, 1983". United States Geological Survey. 5 January 2010. Retrieved 5 July 2010.