Pb-210 and Cs-137 distribution in Burullus lagoon sediments of Nile river delta, Egypt: sedimentation rate after Aswan High Dam |
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| Authors: | Zhuang XU Alaa SALEM Zhongyuan CHEN Weiguo ZHANG Jing CHEN Zhanghua WANG Qianli SUN Daowei YIN |
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| Institution: | (1) Department of Geography of East China Normal University, Shanghai, 200062, China;(2) Geological Sciences Department of Kafrelsheikh University, Kafrelsheikh, 33516, Egypt;(3) State Key Laboratory of Estuarine and Coastal Research of East China Normal University, Shanghai, 200062, China |
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| Abstract: | This paper examines the Burullus lagoon deposits of the Nile delta coast and the distribution of Pb-210 and Cs-137. Three
vibrocores from the lagoon have revealed densely concentrated shell fragments of brackish water origin in the upper (<ca.
15cm, in general) core sediments. Pb-210 and Cs-137 are in general measurable above this sediment core horizon, but, the rest
downcore remains as an irregular distribution pattern, probably incurred due to secondary sediment transport or seawater seepage
related processes. The present study of Pb-210 and Cs-137 and associated sediment nature of Burullus lagoon prefers sediments
of <15 cm in vibrocores to after Aswan High Dam constructed in 1964, with sedimentation rate of 0.42-0.56 cm/a. |
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| Keywords: | lagoon deposits lower fallout inventory Nile delta coast |
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