Estimation of sediment accumulation rates using naturally occuring ²¹⁰Pb models in G眉lbah莽e Bay, Aegean Sea, Turkey

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• 作者：Ilker Sert^a ; ^{llker.sert@ege.edu.tr} ; G&uuml ; ngö ; r Yener^a ; Erdeniz Ozel^b ; Bade Pekcetinoz^b ; Mustafa Eftelioglu^b ; Aysun Ugur Gorgun^a
• 关键词：Sedimentation rate ; Enrichment factor ; Anthropogenic factor ; Hydrothermal area
• 刊名：Journal of Environmental Radioactivity
• 出版年：2012
• 期刊代码：45_0265931x
• 类别：env
• 出版时间：May, 2012
• 卷：107
• 期：Complete
• 页码：1-12
• 文件大小：1173 K

摘要

The sediment chronology was determined using Lead-210 (²¹⁰Pb) dating method in G眉lbah莽e Bay. Sediment cores were obtained using gravity core sampler from hydrothermal area and also from reference point and surfical distribution of Polonium-210 (²¹⁰Po) was investigated in the study area. The average of surfical concentration of ²¹⁰Po was found as 175.25聽卤聽3.80聽Bq聽kg^鈭? in the hydrothermal area which was higher than the reference point value of 133.20聽卤聽3.30聽Bq聽kg^鈭?. Sedimentation rates in Core reference point (RN) displayed an increase till the year 1942 and a decrease afterwards, sedimentation rates in any core from hydrothermal area have not exhibited any continuous increase or decrease. The ²¹⁰Pb fluxes measured from core inventories are close to each other. Average enrichment factors for Cu, Cd, Sr, Zn, Cr vary between 20.35 and 12.18 indicating that the sediments have been contaminated with these metals in the reference point. Maximum enrichment factor values for Cr, Cu, Zn, Ba, Sr, Ni, Co vary between 22.91 and 11.42, implying that the sediments in hydrothermal area have been contaminated with these metals.