美國地質調查局稱，地震震級為7.3級。當天晚些時候，土耳其方面將震級更正為7.2級。
除了與時間賽跑，營救受困人員外，當局目前最大的隱憂是，由於凡城位於土耳其第一大湖「凡湖」東岸，一旦大地震導致凡湖移位，大量湖水恐將灌入鄰近區域，使災情更加一發不可收拾。
土耳其位於歐亞板塊地震帶，是全球三大地震帶之一。地震主因是印度洋在印尼地區隱沒，印度半島向北與亞洲大陸發生碰撞，以及非洲大陸與歐亞大陸碰撞所造成。
The U.S. Geological Survey initially reported the quake had a magnitude of 7.3, then revised it down to 7.2.
Turkey is a tectonically active country that experiences frequent destructive earthquakes. On a broad scale, the seismtectonics of the region near the October 23, 2011 earthquake are controlled by the collision of the Arabian Plate and Eurasian plates; at the latitude of this event, the Arabian plate converges with Eurasia in a northerly direction at a rate of approximately 24 mm/yr. West of the October 23, 2011, earthquake tectonics are dominated by strike-slip faulting on the East (in southern Turkey) and North (in northern Turkey) Anatolian fault zones. These large, translational fault systems extend across much of central and western Turkey and accommodate the western motion of the Anatolian block as it is being squeezed by the converging Arabian and Eurasian plates.
Read also: Understanding the 7.2 magnitude earthquake in East Turkey (October 23, 2011)
Read also : New Insights into the October 2011 Van (Turkey) Earthquake – detailed analysis by the CEDIM Forensic Earthquake Analysis Group
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| Google Crisis Response : 2011 Turkey Eathquake, include Person Finder, Resources, Important Telephone Numbers, Maps and satellite imagery, News and Updates. |
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| 社群媒體地圖 / ESRI Social Media Map |
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| Turkey Quake Map: Click to see animation |
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| Click to see more Photos: Powerful earthquake strikes Turkey |
7.2 Earthquake In Eastern Turkey 10-23-2011
CCTV shows moment when earthquake
Aerial of earthquake-hit Turkey shows full extent of damage
