1983 Biga earthquake

1983 Biga earthquake

UTC time	1983-07-05 12:01:30
ISC event	571502
USGS-ANSS	ComCat
Local date	5 July 1983 (1983-07-05)
Local time	15:01:30 EEST
Magnitude	6.1 Ms
Depth	10 km
Epicenter	40°19′26″N 27°13′19″E / 40.324°N 27.222°E / 40.324; 27.222[1]
Type	Strike-slip[2]
Areas affected	Turkey Biga
Max. intensity	MMI IX (Violent)
Landslides	Yes
Casualties	5 dead, 30 injured

The 1983 Biga earthquake hit northwestern Turkey on 5 July 1983. It measured 6.1 on the surface-wave magnitude scale and was felt as far away as eastern Greece. The United States Geological Survey listed the earthquake among the "Significant Earthquakes of the World" for 1983.^[3]

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.

Five people died^[3] and 30 were injured. Several houses collapsed, an additional 85 damaged, water mains broke and windows shattered.^[4][5] Among the dead was a farmer who was crushed by a collapsing roof.^[6] It also caused panic as far away as Istanbul and in eastern Greece. In Istanbul, there was some damage and people fled onto the streets.^[4][3]

• List of earthquakes in 1983
• List of earthquakes in Turkey

• Şencan, A.; Efe, R. (2014). "An Overview of Morphotectonic Features and Seismicity of the Vicinity of Biga and Denizkent (NW Turkey)". Procedia – Social and Behavioral Sciences. 120: 816–825. doi:10.1016/j.sbspro.2014.02.166. ISSN 1877-0428.

• The International Seismological Centre has a bibliography and/or authoritative data for this event.