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Assessment of Groundwater Salinity in Aloha Pliocene Aquifer of Marbella (Málaga)

机译：马尔韦利亚（马拉加）Aloha上新世含水层的地下水盐度评估

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In order to study the origin of the salinity and the salinization mechanisms that operate in the Pliocene Aloha Aquifer, hydrochemical and isotopic environmental techniques have been used, due to their known effectiveness and usefulness in the identification of water-rock interaction processes, location of recharge zones and its origin. Analyzing major ions, trace elements, ionic ratios and isotopic ratios of the elements of the water molecule, stable isotopes (δ~(18)O and δ~(2)H) and δ~(18)O and δ~(34)S of sulphate. Previous hydrochemical studies of the Pliocene Aloha Aquifer indicate high concentrations of Cl~(-) and Na~(+) as well as HCO_(3), SO_(4) and Ca that should be indicated the interaction with waters of highersalinity, but also with rocks (longer residence time in the aquifer). Therefore, as a starting hypothesis, two possible origins of the high salinity are considered: mixture with seawater or connate waters stored in Pliocene formations. Finally, the study confirmed that the salinity of the Aloha Aquifer is of a localcharacteristic and not due to seawater intrusion.
机译：为了研究上新世Aloha含水层中盐度的来源和盐化机制，已使用水化学和同位素环境技术，因为它们在识别水-岩相互作用过程，补给位置方面具有已知的有效性和有用性。区及其起源。分析水分子，稳定同位素（δ〜（18）O和δ〜（2）H）和δ〜（18）O和δ〜（34）的主要离子，微量元素，离子比和同位素比硫酸盐。以前对上新世Aloha含水层的水化学研究表明，高浓度的Cl〜（-）和Na〜（+）以及HCO_（3），SO_（4）和Ca应当表明与较高盐度的水之间存在相互作用，与岩石（在含水层中的停留时间更长）。因此，作为初始假设，考虑了高盐度的两个可能的来源：与上新世地层中存储的海水或原生水的混合。最后，研究证实，阿罗哈含水层的盐度具有局部特征，而不是由于海水入侵。

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