Civil Engineering / İnşaat Mühendisliği
Permanent URI for this collectionhttps://hdl.handle.net/11147/13
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Conference Object Çan (çanakkale) Havzasındaki Soğuk Yeraltısularının Hidrojeolojik ve Hidrojeokimyasal Özellikleri(TMMOB Jeoloji Mühendisleri Odası, 2014) Deniz, Ozan; Baba, Alper; Tarcan, GültekinBu çalışmanın amacı Çan Havzası’ndaki (havza alanı 746 km2) soğuk yeraltı sularının hidrojeolojik ve hidrojeokimyasal özelliklerinin belirlenmesini içerir. Bunun için yaklaşık 400 su noktasında (soğuk su kaynakları, sığ ve derin kuyular) hidrojeolojik gözlemler yapılmıştır. Su noktalarının bir bölümünden alınan su örneklerinin kimyasal bileşenleri incelenmiştir. Çalışmalar soğuk su kaynaklarının Çan Havzası’ndaki yüksek kesimlerde yaygın olduğunu göstermiştir. Havzadaki soğuk yeraltı sularının yıllık sıcaklık ortalaması yaklaşık 16°C’dir. Sıcaklık ve elektriksel iletkenlik değerleri yükseklikle ters orantılıdır. Bu çalışmada hazırlanan yeraltı su tablası haritası, havzada genelde yeraltı suyunun Kocaçay’ı beslediğini gösterir.Article Citation - WoS: 1Hydrogeochemical and Hydrogeological Investigation of the Can Geothermal Field(TMMOB Jeoloji Mühendisleri Odası, 2010) Deniz, Ozan; Baba, Alper; Tarcan, GultekinThe Can Geothermal Field is located on a central part of the Biga Peninsula in northwest Turkey. Volcanics are the dominant rock type in this region. Alteration zones and clay minerals are very common in these rocks. Sedimentary rocks, low-grade metamorphics and alluvium are other geological units observed around Can. These units include common fracture zones because of the tectonic activity in the region. Thermal waters have reached the surface via these fracture zones. Alluvium is the most productive aquifer in all geological units. Wells drilled in this unit yield between 5-30 L/s. The transmissibility and permeability coefficients of this unit are of 50-421 m(2)/day and of 1.01-16.8 m/day, respectively. In this aquifer, groundwater depth changes between 0.1 and 8.3m. According to the IAH (1979) water classification, these thermal waters are of the Na-Ca-SO4 type, the cold waters are of the Ca-Mg-HCO3 type and the snow samples are of a mixed water type. Geothermal waters have a meteoric origin. The mean temperature, electrical conductivity and pH of the thermal waters have values of 44.4 degrees C, 2941 mu S/cm and 6.9, respectively. Geothermometer equations were used for prediction of reservoir fluid temperatures of the geothermal system and temperature values were obtained between 46 and 203 degrees C. delta D, delta T and delta O-18 isotope analysis showes that thermal waters in the Can region have a meteoric origin and are a minimum of 45-50 years old.Article Citation - WoS: 28Citation - Scopus: 30Hydrochemical and Isotopic Composition of Tuzla Geothermal Field (canakkale-Turkey) and Its Environmental Impacts(Taylor and Francis Ltd., 2009) Baba, Alper; Yüce, Galip; Deniz, Ozan; Yasin, DidemTuzla is an active geothermal area located in northwestern Turkey, 80 km south of the city of Canakkale and 5 km from the Aegean Coast. Geothermal brine, deriving from this area, contains an abundance of NaCl and a water temperature of 173°C (T1 well at 814 m depth) is typically encountered. The aim of this study was to determine the hydrogeochemical properties of the geothermal brine using both chemical and isotopic data, and to investigate the origin of the geothermal brine in the Tuzla area and the environmental impacts of Tuzla Geothermal Field (TGF). Both geothermal brine and shallow groundwater in the area are of meteoric origin. Isotope results indicate that the hot saline waters (brine) in the Tuzla geothermal field originate from connate water along faults. As the saline water rises to the surface, it mixes with shallow groundwaters in various ratios. In addition, the high sodium (Na) and chloride (Cl) content in the Tuzla Stream, fed from the Tuzla geothermal brine during the dry season, cause an increase in sodium and chloride concentrations in the shallow groundwaters by infiltration into the aquifer. Moreover, salt accumulation on the surface is observed due to the uncontrolled artesian flow of geothermal brine, which adversely affects the salinity of shallow groundwater.