Reservoir sediments

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dc.contributor.author Wazne, Mahmoud
dc.contributor.author Ammar, Rawaa
dc.contributor.author Kazpard, Veronique
dc.contributor.author El Samrani, Antoine
dc.contributor.author Amacha, Nabil
dc.contributor.author Saad, Zeinab
dc.contributor.author Chou, Lei
dc.date.accessioned 2016-06-09T10:42:30Z
dc.date.available 2016-06-09T10:42:30Z
dc.date.copyright 2015 en_US
dc.date.issued 2016-06-09
dc.identifier.issn 0167-6369 en_US
dc.identifier.uri http://hdl.handle.net/10725/3998
dc.description.abstract This study delineates the physical, chemical, and biological effects resulting from anthropogenic and endogenic activities in a sensitive dammed reservoir situated in a semi-arid region. The reservoir is characterized by two major flow regimes: a wet fill hydrologic regime and a dry spill one. A seasonal sampling campaign was carried out over a period of 2 years (2011–2013) where water samples were collected across the water column and from piezometers just outside the perimeter of the reservoir. Similarly, sediments were collected from the corresponding areas beneath the water column. The water samples were analyzed for environmental isotopic ratios, elemental composition, and physical, biological and chemical parameters, whereas the sediment and algal samples were subjected to physical, mineralogical, spectroscopic, and microscopic analyses. This investigation indicated that the dam had resulted in the alteration of the biogeochemical cycle of nutrients as well as the degradation of the sediment and water quality. The hydrological and biogeochemical processes were found to induce vertical downward transport of chemicals towards the fine grained calcareous sediments during the fill mode, whereas the sediments acted as a source of a chemical flux upward through the water column and downward towards the groundwater during the spill mode. The geomorphological characteristics of the reservoir enhanced the strong hydrological connectivity between the surface water and the groundwater where the reservoir responded quickly to natural and anthropogenic changes in the upper watershed. The water and sediments in the sensitive spill mode were of poor quality and should receive more attention due to the potential hazard for the associated hydro-project and the sustainability of the agricultural soil in the long term. Thus, a safe water and sediment management plan should be implemented in order to improve the dam functionality and to safeguard the precious water resources. en_US
dc.language.iso en en_US
dc.title Reservoir sediments en_US
dc.type Article en_US
dc.description.version Published en_US
dc.title.subtitle a sink or source of chemicals at the surface water-groundwater interface en_US
dc.author.school SOE en_US
dc.author.idnumber 201205627 en_US
dc.author.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Environmental Monitoring and Assessment en_US
dc.journal.volume 187 en_US
dc.journal.issue 579 en_US
dc.article.pages 1-20 en_US
dc.keywords Reservoir en_US
dc.keywords Sediments en_US
dc.keywords Surface water en_US
dc.keywords Ground water en_US
dc.keywords Hydrological connectivity en_US
dc.identifier.doi http://dx.doi.org/10.1007/s10661-015-4791-0 en_US
dc.identifier.ctation Ammar, R., Kazpard, V., Wazne, M., El Samrani, A. G., Amacha, N., Saad, Z., & Chou, L. (2015). Reservoir sediments: a sink or source of chemicals at the surface water-groundwater interface. Environmental monitoring and assessment, 187(9), 1-20. en_US
dc.author.email mahmoud.wazne@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://link.springer.com/article/10.1007/s10661-015-4791-0 en_US

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