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The seismic hazard for the Lake Van basin is computed using a probabilistic approach, along with the earthquake data from 1907 to present. The spatial distribution of seismic events between the longitudes of 41-45°and the latitudes of 37.5-40°, which encompasses the region, indicates distinct seismic zones. The positions of these zones are well aligned with the known tectonic features such as the Tutak-Ç aldıran fault zone, the Ö zalp fault zone, the Gevaş fault zone, the Bitlis fault zone and Karlıova junction where the North Anatolian fault zone and East Anatolian fault zone meet. These faults are known to have generated major earthquakes which strongly affected cities and towns such as Van, Muş, Bitlis, Ö zalp, Muradiye, Ç aldıran, Erciş, Adilcevaz, Ahlat, Tatvan, Gevaş and Gürpınar. The recurrence intervals of M s C 4 earthquakes were evaluated in order to obtain the parameters of the Gutenberg-Richter measurements for seismic zones. More importantly, iso-acceleration maps of the basin were produced with a grid interval of 0.05 degrees. These maps are developed for 100-and 475-year return periods, utilizing the domestic attenuation relationships. A computer program called Sistehan II was utilized to generate these maps.

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Hasankeyf and the surrounding area, with historic buildings and caves, is one of Turkey's most important cultural heritage. A significant part of this cultural heritage consisting of limestones will be under the influence of the Ilısu dam reservoir. Determination of the degree of the effects of the caves and the rocks surrounding the dam lake to be affected by water will be important in terms of taking necessary precautions. In this study, the water and salt resistance of the samples taken from the limestones in the historical Hasankeyf region, which is also used as a building stone, was determined by using slake durability and salt crystallization experiments, respectively. The data obtained showed that Hasankeyf limestones were significantly affected by water and salt.

Bu çalışmada, Türkiye İçin Yeni Bir Deprem Enerjisi Azalım Bağıntısının Geliştirilmesi amacıyla kullanılan zemin ortamda kaydedilmiş deprem ivme kayıtlarındaki zemin etkisinin giderilmesi işlemi anlatılmaktadır. Depreme dayanıklı yapı tasarımındaki en önemli parametrelerden biri, depremin yatay yer ivmesi değeridir. Sismik enerjinin mesafeye göre azalımını ifade eden bu parametre, deprem enerjisi azalım bağıntıları yardımıyla hesaplanmaktadır. Deprem enerjisi azalımı konusundaki ampirik bağıntılar türetilirken ivme kayıtlarındaki zemin etkisinin giderilmesi gerekir.  Türkiye'de ölçülmüş kuvvetli yer hareketi kayıtları, kuyu içi sismik deneyi ve ProShake bilgisayar programı kullanılarak gerçekleştirilen ters evrişim işlemi çalışmada kullanılan başlıca materyal ve yöntemlerdir. Türkiye'de meydana gelen deprem kayıtlarının zemin etkisinden arındırılabilmesi için:  ivmeölçer istasyonlarında sondaj kuyusu açılmıştır. Zemine ait kuyu loğu hazırlanmış ve düşey kuyu yöntemiyle zemindeki tabakaların dalga iletme hızı (VP ve VS) ölçülmüştür.  ProShake yazılımına aktarılan arazi verileri ve ivme kayıtları ters evrişim işlemi uygulanarak zemin etkisinden arındırılmıştır. 

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In this study, located in east of Turkey, for Lake Van basin proposed for the peak ground acceleration (PGA) dependent on, describes the attenuation relationships. Earthquake records in and around Van Lake Basin were used in this study. This data is obtained from Turkey. These are the acceleration records taken by Strong Ground Motion Recording Stations under the control of Republic of Turkey Prime Ministry Disaster and Emergency Management Authority Presidential of Earthquake Department. Accelerometer records of earthquakes occurred between 01 January 1976 and 31 December 2018 were compiled. For this purpose, earthquakes occurred in an area of approximately 200 km radius in and around Van province were investigated. For this study, 162 accelerometer records in EW and NS direction were compiled from 249 earthquakes with magnitude 4.0≤MW and acceleration value of 10.0cm/s2 ≤ PGA. A database was created with the earthquake record files obtained. Earthquake magnitude (MW), acceleration (gal= cm/s2), distance (R-km) etc. information for multiple regression analysis were used in these files. Multiple regression analysis was performed in IBM-SPSS software.