Examination of the pollution in the West Black Sea by remote sensing technologies
Ertuğrul Doğan, Cem Gazioğlu, Erdoğan Okuş, I. Ethem Gönenç, Hüseyin Yüce, Zeki Yaşar Yücel
University of Istanbul, Institute of Marine Sciences and Management, No: 1, 34470 Vefa Istanbul, TURKEY
Istanbul Technical University, Civil Engineering Faculty, Department of Environmental Engineering, Ayazağa Campus, Maslak, Istanbul, TURKEY
Turkish Navy, Department of Navigation, Hydrography and Oceanography, Çubuklu, Beykoz, Istanbul, TURKEY
Abstract
Black Sea has been subjected to various investigations from the 19th century to the present time, due to its unique oceanographic features and geological evolution. It has a surface area of 423 000 km2 (excluding the Azov Sea) and a volume of 547 000 km3 . The Black Sea (BS) is an intercontinental and is almost a miniature ocean with its geological structure. Unlike other seas of the world, the BS shows unique quality and trophic properties. Fortunately, only the upper layer water of the BS is introduced into the Strait of Istanbul (SOI; Bosphorus) and has a significant effect on the quality and trophic conditions of the Marmara Sea (MS). These effects are discussed in the light of data obtained from collaborative efforts of processed satellite images and various research institutions.
Keywords: Black Sea, Danube River, remote sensing, Strait of Istanbul, Marmara Sea
Calculation of investment costs of Turkish anchovy purse seiners operated in the Black Sea
A. Cemal Dinçer, Ercan Köse, H. Fehmi Durukanoğlu
Karadeniz Technical University, Faculty of Marine Science, 61530, Çamburnu, Sürmene, Trabzon, TURKEY
Abstract
This paper presents a simple and practical method of obtaining the estimate of total investment costs for Turkish anchovy purse-seiners, designed by “traditional methods”. It is intended as a guide to fishing vessel designers, builders, owners and others concerned at the beginning of a new project who may wish to know the investment, and how it changes with alterations to principal design variables, such as main dimensions, and power. The method does not supplant more refined techniques used for professional cost estimators at later stages in the design, but it may be useful in circumstances where cost estimating expertise or actual shipyard costs are not immediately available. Fishing vessels discussed in this study are of 20 to 40 m long with an engine power of 300 to 1100 HP. It has been found that for the year 1997 total investment costs varied in the range from US$ 265000 to 532000, with an average value of US$ 391000. The average values for the proportions of investment cost components were found to be 25% for vessel production, 27% for machinery, and 48% for fishing gear and equipment cost.
Keywords: Investment costs, fishing vessels, Black Sea, anchovy
Underwater morphology of the Aegean Sea and natural prolongation of the Anatolian mainland
Mustafa Eryılmaz, Bedri Alpar, Ertuğrul Doğan, Hüseyin Yüce, Fulya Yücesoy Eryılmaz
Department of Navigation, Hydrography and Oceanography, 81647 Çubuklu, Istanbul, TURKEY
Istanbul University, Institute of Marine Sciences arid Management, 34470 Vefa, Istanbul, TURKEY
Istanbul Technical University, Ship Construction and Marine Sciences Faculty, 80626, Ayazaga, Istanbul, TURKEY
Abstract
Underwater morphologic structures are closely related to the structural geology. Therefore, the determination of the relationship between the actual underwater morphology and the tectonic evolution of the region is rather important in order to draw the natural prolongation of the Anatolian mainland and to draw a natural border between Anatolian and Greek mainlands. For this purpose, the actual underwater morphological structures in the Aegean Sea were determined and correlated with the available geologic and geophysical data. The Greek and Turkish islands placed in the Eastern Aegean Sea formed the upper parts of the mountains before the subsidence of the region and the eastern part of the Aegean Sea is on the natural prolongation of the Anatolian mainland. The natural border separating the two mainlands is placed close to the coasts of the Greek mainland. These findings indicate that the islands close to the Anatolian coast are natural prolongation of the mainland.
Keywords: Aegean Sea, natural prolongation, geomorphology
An investigation on the oil pollution of the Eastern Mediterranean Coast of Turkey
Kasim Cemal Güven, Selma Ünlü, Işık Bıldacı, Ertuğrul Doğan
University of istanbul, Institute of Marine Sciences and Management, Vefa, 34470, Istanbul, TURKEY
Hacettepe University, Environmental Research Center, Ankara, TURKEY
Abstract
The oil pollution in seawater of East Mediterranean areas of Turkey was measured before and after service of Iraq – Yumurtalık (İskenderun) export pipeline. The higher oil concentration was found as 514.28 µg/L and 30.35 µg/L at Botaş before and after pumping respectively. The oil levels was varied before or after pumping. The findings show that oil transport by pipeline is a better export route. This investigation is a example which is supported the Turkish thesis of pipeline transport for Caspian oil thus recuding the risk of dangerous oil pollution of Bosphorus, Sea of Marmara and Dardanelles.
Keyword: East Mediterranean, oil levels, before and after pumping
An investigation on the oil pollution of the Eastern Mediterranean Coast of Turkey
Kasim Cemal Güven, Selma Ünlü, Işık Bıldacı, Ertuğrul Doğan
Underwater morphology of the Aegean Sea and natural prolongation of the Anatolian mainland
Mustafa Eryılmaz, Bedri Alpar, Ertuğrul Doğan, Hüseyin Yücel, Fulya Yücesoy Eryılmaz
Calculation of investment costs of Turkish anchovy purse seiners operated in the Black Sea
A. Cemal Dinçer, Ercan Köse, H. Fehmi Durukanoğlu
Examination of the pollution in the West Black Sea by remote sensing technologies
Ertuğrul Doğan, Cem Gazioğlu, Erdoğan Okuş, I. Ethem Gönenç, Hüseyin Yüce, Zeki Yaşar Yücel
