1967 Mudurnu earthquake

Earthquake in western Turkey 1967 Mudurnu earthquake 1967-07-22 16:57:00 833573 iscgem833573 1967 07 22 yes 18:57 Turkey 33.0 kmEHB 833573 40.67 30.69 inline,titleEHB 833573 Oblique slip 7.4 w yMudurnu 1967 2018-04-05 7.1 s yAmbraseys Zápotek Taşdemiroğlu Aytun 1968 14. X Turkey 86 dead The 1967 Mudurnu earthquake or more correctly, the 1967 Mudurnu Valley earthquake occurred at about 18:57 local time on 22 July near Mudurnu, Bolu Province, north-western Turkey.Ambraseys Zápotek Taşdemiroğlu Aytun 1968 14. The magnitude 7.4 w yMudurnu 1967 earthquake (but only 6.0 on the b y scale.EHB 833573 The difference is due to differences in what each scale measures.) was one of a series of major and intermediate quakes that have occurred in modern times along the North Anatolian Fault since 1939.Toksöz Shakal Michael 1979 1261. Earthquake Although the Mudurnu Valley earthquake was relatively strong, there were only 86 fatalities, with 332 people injured. About 5,200 houses were destroyed or damaged beyond repair;Ambraseys Zápotek Taşdemiroğlu Aytun 1968 14. some 900 of these were in Adapazarı at the far western end of the fault zone, and many collapsed completely as a result of aftershocks.Ambraseys Zápotek Taşdemiroğlu Aytun 1968 15, 43. Intensity The authors of the 1968 UNESCO report into the Mudurnu Valley earthquake, with Nicholas Ambraseys as its first author, felt that its Mercalli intensity was difficult to estimate accurately. In some places an implied level of XII (Extreme) was evident, whereas the vibrational effects were nearer VIII–IX (Severe–Violent). Although a large number of sites were independently assessed by up to six observers, variations of up to four degrees of the Mercalli scale indicated that an accurate figure was practically impossible to gauge.Ambraseys Zápotek Taşdemiroğlu Aytun 1968 48. A 1988 paper authored by Ambraseys lists the event with a maximum Mercalli intensity of X (Extreme). Damage Considering the large surface-wave magnitude (7.1) and widespread surface rupturing, structural damage to buildings was surprisingly small; variations in damage were related to the materials used and construction method of individual buildings, rather than the proximity to the fault break.Ambraseys Zápotek Taşdemiroğlu Aytun 1968 42. Some villages suffered 70% destruction of property, while others nearby with fault lines running right through them had only a few houses damaged. Surface rupture The surface rupture zone, which was between 1 - 4 km wide, stretched some 80 km on from to Lake Abant (tr Abant Gölü) to Sapanca in an East–West direction, generally following the course of the Mudurnu River until it flows north near Lake Sapanca. The earthquake is named after the river valley, not the town of Mudurnu itself, which is some distance south of the river and outside the rupture zone.April 2018 Aftershocks A number of small aftershocks occurred, mostly towards the westward end of the fault zone; its eastern end overlapped the rupture zone of the previous M7.1 1957 Abant earthquake with a similar epicentre, by about 25 km on.Toksöz Shakal Michael 1979 1263; Ambraseys Zápotek Taşdemiroğlu Aytun 1968 49. See also List of earthquakes in 1967 List of earthquakes in Turkey References Ambraseys N. N. Engineering seismology: Part I Earthquake Engineering & Structural Dynamics 17 1 1988 0098-8847 10.1002/eqe.4290170101 1988EESD...17....1A Table IV Sources Ambraseys N.N. Nicholas Ambraseys Zápotek A. Taşdemiroğlu M. Aytun M. 1968 UNESCO The Mudurnu Valley (West Anatolia) Earthquake of 22 July 1967 http://unesdoc.unesco.org/images/0015/001582/158293eb.pdf. Mudurnu 1967 iscgem833573 2018-04-05 cs2 EHB cs2 Toksöz M.N. Shakal A.F. Michael A.J. 1979 Space-time migration of earthquakes along the North Anatolian fault zone and seismic gaps Pure and Applied Geophysics Birkhäuser Geoscience 117 6 1258–1270 10.1007/BF00876218 1979PApGe.117.1258T 186224522 https://www.gt-crust.ru/jour/article/view/624 subscription . External links 833573 1967 Mudurnu Category:1967 earthquakes Category:1967 in Turkey Category:History of Bolu Province Category:July 1967 in Europe Category:1967 disasters in Turkey Category:Strike-slip earthquakes Category:July 1967 in Turkey