Presidency of Disaster and Emergency Management, Department of Earthquakes.
October 23, 2011 Van Earthquake report from the General Directorate of Disaster Affairs (in Turkish).
Read the Report: 23/10/2011 VAN-Merkez Depremi (1.8 MB PDF)
You can also go to the General Directorate of Disaster Affairs – Earthquake Research Department website for more information at: http://www.deprem.gov.tr/sarbis/Shared/Anasayfa.aspx.