• Source: 1894 Istanbul earthquake

The 1894 Istanbul earthquake occurred in the Çınarcık Basin or Gulf of Izmit in the Sea of Marmara on 10 July at 12:24pm. The earthquake had an estimated Ms magnitude of 7.0. At least an estimated 1,349 people were killed in towns around the Gulf of Izmit such as Yalova, Sapanca and Adapazarı, and in Ottoman Constantinople (present day Istanbul). The main shock caused a tsunami 1.5 metres (4.9 ft) high.




Background



The Sea of Marmara is a pull-apart basin formed at a releasing bend in the North Anatolian Fault, a right-lateral strike-slip fault. This local zone of extension occurs where this transform boundary between the Anatolian Plate and the Eurasian plate steps northwards to the west of Izmit from the Izmit Fault to the Ganos Fault. The pattern of faults within the Sea of Marmara basin is complex but near Istanbul there is a single main fault segment with a sharp bend. To the west, the fault trends west–east and is pure strike-slip in type. To the east, the fault is NW–SE trending and show evidence of both normal and strike-slip motion. Movement on the Gulf of Izmit section of the fault, which bounds the Çınarcık Basin, is the most likely cause of the 1894 event. Other possible causes are movement on the Princes' Islands segment of the fault (to the west of the Gulf of Izmit), and movement on a normal fault in the Çinarcik basin, separate from the North Anatolian Fault.




Damage


The earthquake is estimated to have generated shaking with a modified Mercalli intensity of 9 at Sapanca, 8.5 at Yalova, and 8 at Adapazarı, Büyükçekmece, Gebze, Kartal, Küçükçekmece and on the Princes' Islands. The quake killed 990 people in the area around Yalova and Sapanca, 83 in Adapazarı and 276 in Istanbul.




= Response

=
Numerous civil society organisations in Belgrade, capital of the nascent Kingdom of Serbia, organized benefit events to collect aid for victims of the catastrophe.




See also


List of earthquakes in Turkey
List of historical earthquakes




References






Further reading


Ambraseys, N. (2009). Earthquakes in the Mediterranean and Middle East: A Multidisciplinary Study of Seismicity up to 1900 (First ed.). Cambridge University Press. pp. 774–779. ISBN 978-0521872928.
Ambraseys, N.N.; Finkel, C.F. (1991), "Long-term seismicity of Istanbul and of the Marmara Sea region", Terra Nova, 3 (5): 527–539, Bibcode:1991TeNov...3..527A, doi:10.1111/j.1365-3121.1991.tb00188.x, ISSN 0954-4879
Bein, Amit (2008), "The Istanbul Earthquake of 1894 and Science in the Late Ottoman Empire", Middle Eastern Studies, 44 (6): 909–924, doi:10.1080/00263200802426021, JSTOR 40262628, S2CID 144961288

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