Английская Википедия:1969 Alaşehir earthquake
Шаблон:Short description Шаблон:Infobox earthquake
The 1969 Alaşehir earthquake occurred on March 28 at 03:48 local time near the city of Alaşehir in Turkey's Manisa Province. The Шаблон:M 6.8 earthquake struck at Шаблон:Cvt depth. It had a MSK 64 intensity of VIII (Destructive).[1] At least 53 people were killed in the earthquake.[2]
Tectonic setting
The Alaşehir region is dominated by extensional faulting in the young sedimentary layers. Extension accommodated by normal faults cause uplift in the land, forming graben features. Earthquakes in this region have pure normal dip-slip mechanism with no strike-slip components. These earthquakes occur along faults that are parallel to the grabens. Faults in the area have a dip angle of 30–60° and extend down to Шаблон:Cvt beneath the surface.
Earthquake
The earthquake occurred in the Alaşehir Valley where normal faulting was the mechanism; occurring along a northwest–southeast striking, northeast dipping plane. Surface ruptures developed in the valley where the earthquake occurred. At least six surface ruptures were traced uninterrupted for long distances. The longest rupture was measured more than Шаблон:Cvt long. The total length of measured surface rupture was Шаблон:Cvt; extending from Dereköy, through Alaşehir and terminating at Doğuşlar. An average surface offset of Шаблон:Cvt was measured. However the measurement was recorded a week after the event hence aseismic creep may have occurred and contaminated actual coseismic offset measurements.[3]
An intense aftershock sequence followed the mainshock.[3] One of these aftershocks was recorded Шаблон:M 4.6. Felt report of aftershocks by locals have been debunked as separate seismic activity in Demirci, where another severe earthquake occurred on March 23.[3]
Impact
At least 53 people died. Land failure and landslides on the slopes of the valleys contributed to heavy damage. Many small villages suffered great destruction. At least 3,072 buildings were damaged or destroyed.[4] The Demirköprü Dam however, was undamaged.[2][1]
See also
References
External links
Шаблон:Earthquakes in 1969 Шаблон:Earthquakes in Turkey
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- 1969 earthquakes
- March 1969 events
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