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Öğe Factor analysis applied to distribution of elements in western Turkey(Pergamon-Elsevier Science Ltd, 2001) Bakac, M; Kumru, MNThis paper examines the results of R-mode factor analysis performed on four radionuclides and two elements data from a geochemical survey from western Turkey. Sediment and soil samples numbering 321 were collected along the Gediz river and analysed for (238)eU, (232)eTh, K-40, Ra-226, Mg and Pb. Two factors in soil and sediment, which account for 59% and 56% of the total variance, respectively, were extracted and named as geological structure and volcano. (C) 2001 Elsevier Science Ltd. All rights reserved.Öğe Factor analysis in the geochemical studies along the Gediz river, Turkey(Kluwer Academic Publ, 2001) Bakac, M; Kumru, MNWater samples collected from 321 sampling points at I km intervals at a site located close to the industrial and geological areas in the Gediz river were analysed for U, Ra, Na, Mg, Mn, K. Ni, Cd, Co, Pb, Al, Fe, Cr, Zn, Cu and Ca. Heavy metal concentrations in the samples were determined by atomic absorption spectroscopy, laser excited fluorescence, and radon collector chamber. Factor analysis was used to describe the relationship among 16 elements. Four factors were extracted and they account for 67% of the total variance in the data. These factors are named as industry, sea, agriculture and geology. According to this result, not only industrial plants but also geological structure and agricultural activities were seen to contribute in polluting of the river water. Beside, these factors have shown that a lot of agricultural activities and a sharp increase in the population of the Gediz basin, and industrial development related to above reasons speed up pollution of water sources and become a potential risk on the unpolluted sources.Öğe Possible uranium rich areas in the Aegean region of Turkey(Pergamon-Elsevier Science Ltd, 1997) Kumru, MNThe Buyuk Menderes river originates near Afyon city and flows through the mountains of Ortadag, Cubuk, Babadag, Cevizli and Besparmak. The river enters into the Aegean Sea near Soke. This 500 km long river passes through a large area in the central Aegean region of Turkey. The geological structure contains mostly metamorphic and volcanic rocks of Paleozoic, Mesozoic and Neogene ages. Water, sediment and soil samples were collected from the river at 1 km intervals and near its tributaries. The investigations extended from the end of the river near the Aegean Sea to its source. Eight anomalous areas rich in uranium were determined along the river. Three of them are near known uranium deposits, but the others are not. Copyright (C) 1997 Elsevier Science LtdÖğe R-mode factor analysis applied to the exploration of radioactivity in the Gediz River(Elsevier Science Sa, 1999) Bakac, M; Kumru, MN; Bassari, ASediment samples were collected from the river bed at 10 km intervals and have been analysed for eU, eTh, %K, Ra-226, Ca, Ti, Mn, Zn, Rb, Sr, Y, Zr, Ba, La and Ce. R-mode factor analysis was used to describe the relationship among 15 remotely sensed and geochemical data sets (variables) for the Gediz River. Four factors were extracted in the sediments and they account for 57.6% of the total variance in the data These factors are interpreted as granite (felsic), economy, volcano and industry factors, respectively.