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==References== |
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Revision as of 07:32, 17 April 2013
UTC time | ?? |
---|---|
Magnitude | 7.8 Mw |
Depth | 86 km (53 mi) |
Epicenter | 28°03′22″N 62°04′48″E / 28.056°N 62.08°E |
Areas affected | |
Casualties | 40 dead in Iran (disputed) 34 dead in Pakistan[1] |
At around IRDT 15:14 pm (UTC+4:30) on 16 April 2013, an earthquake of magnitude 7.8 struck a mountainous area between the cities of Saravan and Khash in Sistan and Baluchestan Province, Iran, close to the border with Pakistan,[1][2][3][4][5][6] lasting about 25 seconds.[1] The earthquake came only days after a 6.3-magnitude quake struck south-west Iran near the city of Bushehr and occurred at the boundary between the subducting Arabian Plate and the overriding Eurasian Plate at a depth of about 80 km.[1]
It was probably the strongest earthquake in Iran within the last 40 years, equal in magnitude to the one that shook Tabas in 1978 killing 15,000,[7] and possibly the strongest in the last half-century.[1]
Primary effects
The earthquake struck 83 km east of the city of Khash, and was felt throughout much of eastern Iran and southern Pakistan, and as far away as Riyadh, Manama, Doha, Abu Dhabi, Muscat, and Delhi.[1][8][9] Initial sources cited that close to 100 people lost their lives in Iran and that Iran had confirmed the deaths of 40,[10] but these sources have been disputed; Iran has since officially denied death counts, only reporting injuries, as of 14:00 UTC.[11] Although the earthquake was much stronger than previous ones in the area, the depth and the terrain/population density above the focus meant that there were relatively few casualties in Iran, although the number of casualties was higher in the neighbouring state of Pakistan, with at least 34 reported deaths.[1]
According to the Iranian Red Crescent, all communications in the area have been cut, and rescue teams have been dispatched.[12]
Buildings were evacuated as far away as Delhi, India, and on the Arabian Peninsula, and many buildings in Iran were completely destroyed.[1]
Tectonics
The quake reportedly occurred within the subducting Arabian Plate below the overriding Eurasian Plate. The Strait of Hormuz separates two forms of plate collision. To the northwest, continental crust portions of the Arabian and Eurasian Plates are colliding, resulting in compressive faulting. To the southeast, dense oceanic crust of the Arabian Plate is subducting underneath the Eurasian Plate at the Makran Trench. [13]
References
- ^ a b c d e f g h "BBC News — Major earthquake strikes south-east Iran". Bbc.co.uk. 1970-01-01. Retrieved 2013-04-16.
- ^ "Magnitude 7.8 – IRAN-PAKISTAN BORDER REGION". Earthquake.usgs.gov. Retrieved 2013-04-16.
- ^ "Hundreds feared dead in 7.8 Iran earthquake, also felt in New Delhi, Gulf States — RT News". Rt.com. 2013-04-10. Retrieved 2013-04-16.
- ^ "Reports: Dozens feared dead after strong quake rocks Iran, Pakistan — CNN.com". Edition.cnn.com. 2001-09-11. Retrieved 2013-04-16.
- ^ "Major quake jolts southeastern Iran — Central & South Asia". Al Jazeera English. 2011-10-04. Retrieved 2013-04-16.
- ^ "Iran Earthquake | Liveblog live blogging | Reuters.com". Live.reuters.com. 2009-02-09. Retrieved 2013-04-16.
- ^ "Magnitude 7.5 quake jolts Sistan-Baluchestan in SE Iran, kills 40". 2013-04-16. Retrieved 2013-04-16.
- ^ http://www.muscatdaily.com/Archive/Oman/Massive-earthquake-hits-Iran-tremors-felt-across-Oman-region-26s4
- ^ http://www.arabnews.com/news/448339
- ^ News, Biharprabha. "Major Earthquake strikes India, Pakistan, Iran, Sistan and Baluchestan". Retrieved 16 April 2013.
{{cite web}}
:|last=
has generic name (help) - ^ News, Earthquake Report. "Iran officially denied the 40 deaths today". Retrieved 16 April 2013.
{{cite web}}
:|last=
has generic name (help) - ^ "Hundreds feared killed after strong 7.8-magnitude quake hits Iran". The Globe and Mail. 2013-04-16. Retrieved 2013-04-16.
- ^ "The transition between Makran subduction and the Zagros collision: recent advances in its structure and Active deformation", V. Regard et al, Geological Society of London 330 (2010) 41-64 ,DOI : 10.1144/SP330.4 (2010)