1978 Tabas earthquake

1978 Tabas earthquake
View of Tabas following the quake
1978 Tabas earthquake is located in Iran
1978 Tabas earthquake
Tehran
Tehran
UTC time1978-09-16 15:35:55
ISC event676813
USGS-ANSSComCat
Local dateSeptember 16, 1978 (1978-09-16)
Local time19:05:55 IRST
Magnitude7.4 Mw[1]
Depth10 km (6.2 mi)[1]
Epicenter33°13′N 57°29′E / 33.21°N 57.48°E / 33.21; 57.48[1]
TypeDip-slip[2]
Areas affectedIran
Total damage$11 million[2]
Max. intensityMMI IX (Violent)[3]
Peak acceleration0.8 g[4]
Aftershocks5.0 Mw  Sept 17 at 08:17[5]
Casualties15,000–25,000[2]

The 1978 Tabas earthquake (Persian: زمین‌لرزه ۱۳۵۷ طبس) occurred on September 16 at 19:05:55 local time in central Iran. The shock measured 7.4 on the moment magnitude scale and had a maximum Mercalli intensity of IX+ (Violent). The death toll was in the range of 15,000–25,000, with severe damage occurring in the town of Tabas. The day before, a 5.5 magnitude quake had struck southwestern Iran in the morning and killed at least 42 people in and around the towns of Masjid-e Solaiman and Izeh.[6]

Eighty percent of the human deaths occurred in Tabas, but a total of 85 villages were also affected. This seismic force was felt in Tehran, about 610 kilometers (380 mi) away. About 55–85 km (34–53 mi) of ground deformation was observed, with about 1.7 meters (5 ft 7 in) of maximum slip. Only one significant M5 aftershock occurred.[4]

Damage

The earthquake destroyed or severely damaged around 90 villages. The town of Tabas was completely destroyed. Nearly 85% of the population was killed.[7]

Sixty villages were badly damaged, including Ferdows, where 80 percent of the city was destroyed. Reportedly, two-thirds of Iran, including the capital city of Tehran, felt the earthquake.[8]

Manuel Berberian reported over 20,000 people were killed and 15,000 housing units destroyed.[7]

See also

References

  1. ^ a b c ISC (19 January 2015), ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009), Version 2.0, International Seismological Centre
  2. ^ a b c PAGER-CAT Earthquake Catalog, Version 2008_06.1, United States Geological Survey, September 4, 2009
  3. ^ Berberian, M. (2014), Earthquakes and Coseismic Surface Faulting on the Iranian Plateau, Developments in Earth Surface Processes (1st ed.), Elsevier, p. 609, ISBN 978-0-444-63297-5
  4. ^ a b Ambraseys, N. N.; Melville, C. P.; Adams, R. D. (2005), The Seismicity of Egypt, Arabia and the Red Sea: A Historical Review, Cambridge University Press, pp. 103, 104, 110, ISBN 978-0-521-02025-1
  5. ^ "M5.0 – eastern Iran". United States Geological Survey.
  6. ^ "Quake Kills 42 in Iran". Los Angeles Times. UPI. December 17, 1978. p. I-4.
  7. ^ a b Berberian, Manuel (1982). "Afterstock tectonics of the 1978 Tabas-e-Golshan (Iran) earthquake sequence: a documented active 'thin and thick-skinned tectonic' case". Geophys. J. R. Astron. Soc. 68 (2): 499–530. Bibcode:1982GeoJ...68..499B. doi:10.1111/j.1365-246X.1982.tb04912.x.
  8. ^ "Massive Earthquake Devastates Iran, Killing 15,000 and Destroying Towns | News | The Harvard Crimson". thecrimson.com.


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