Articles | Volume 26, issue 5
https://doi.org/10.5194/hess-26-1341-2022
https://doi.org/10.5194/hess-26-1341-2022
Research article
 | 
10 Mar 2022
Research article |  | 10 Mar 2022

Saline groundwater evolution in the Luanhe River delta (China) during the Holocene: hydrochemical, isotopic, and sedimentary evidence

Xianzhang Dang, Maosheng Gao, Zhang Wen, Guohua Hou, Hamza Jakada, Daniel Ayejoto, and Qiming Sun

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Cited articles

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Aquilina, L., Vergnaud-Ayraud, V., Les Landes, A. A., Pauwels, H., Davy, P., Petelet-Giraud, E., Labasque, T., Roques, C., Chatton, E., and Bour, O.: Impact of climate changes during the last 5 million years on groundwater in basement aquifers, Sci. Rep.-UK, 5, 14132, https://doi.org/10.1038/srep14132, 2015. 
Bouchaou, L., Michelot, J. L., Qurtobi, M., Zine, N., Gaye, C. B., Aggarwal, P. K., Marah, H., Zerouali, A., Taleb, H., and Vengosh, A.: Origin and residence time of groundwater in the Tadla basin (Morocco) using multiple isotopic and geochemical tools, J. Hydrol., 379, 323–338, https://doi.org/10.1016/j.jhydrol.2009.10.019, 2009. 
Cartwright, I., Currell, M., Cendon, D., and Meredith, K.: A review of the use of radiocarbon to estimate groundwater residence times in semi-arid and arid areas, J. Hydrol., 580, 124247, https://doi.org/10.1016/j.jhydrol.2019.124247, 2020. 
Cary, L., Petelet-Giraud E., Bertrand, G., Kloppmann, W., Aquilina, L., Martins, V., Hirata, R., Montenegro, S., Pauwels, H., Chatton, E., Franzen, M., and Aurouet, A.: Origins and processes of groundwater salinization in the urban coastal aquifers of Recife (Pernambuco, Brazil): A multi-isotope approach, Sci. Total Environ., 530–531, 411–429, https://doi.org/10.1016/j.scitotenv.2015.05.015, 2015. 
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Short summary
Due to the widespread salinity in coastal zones, freshwater supplies are now under pressure. This study analyzes the recharge and salinity sources of coastal groundwater (brine, saline, brackish, fresh), as well as salinization and freshening processes, using hydrochemical and isotopic methods. The evolution of saline groundwater is studied using sedimentary characteristics as multiple lines of evidence. This study can be used to better understand groundwater evolution in the coastal zone.
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