NHESS Natural Hazards and Earth System Sciences NHESS Nat. Hazards Earth Syst. Sci. 1684-9981 Copernicus Publications Göttingen, Germany 10.5194/nhess-6-999-2006 Marmara Island earthquakes, of 1265 and 1935; Turkey Altınok Y. 1 Alpar B. 2 Istanbul University, Engineering Faculty, Department of Geophysics, 34850 Avcilar, Istanbul, Turkey Istanbul University, Institute of Marine Sciences and Management, 34116 Vefa, Istanbul, Turkey 30 11 2006 6 6 999 1006 Copyright: © 2006 Y. Altınok 2006 This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Generic License. To view a copy of this licence, visit https://creativecommons.org/licenses/by-nc-sa/2.5/ This article is available from https://nhess.copernicus.org/articles/6/999/2006/nhess-6-999-2006.html The full text article is available as a PDF file from https://nhess.copernicus.org/articles/6/999/2006/nhess-6-999-2006.pdf

The long-term seismicity of the Marmara Sea region in northwestern Turkey is relatively well-recorded. Some large and some of the smaller events are clearly associated with fault zones known to be seismically active, which have distinct morphological expressions and have generated damaging earthquakes before and later. Some less common and moderate size earthquakes have occurred in the vicinity of the Marmara Islands in the west Marmara Sea. This paper presents an extended summary of the most important earthquakes that have occurred in 1265 and 1935 and have since been known as the Marmara Island earthquakes. The informative data and the approaches used have therefore the potential of documenting earthquake ruptures of fault segments and may extend the records kept on earthquakes far before known history, rock falls and abnormal sea waves observed during these events, thus improving hazard evaluations and the fundamental understanding of the process of an earthquake.

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