Salinity increase in groundwater was investigated in the area between Al-Zubair and Safwan, and close to the Khor Al-Zubair Channel of southern Iraq. Thirty-nine groundwater samples from the shallow aquifer and one sample from the Khor Al-Zubair Channel were analyzed. The mean total dissolved solids are 7556 mg/L. The δ²H and δ¹⁸O plot in two groups are below the global meteoric water line. Group A indicates the evaporation effect of irrigation return-flow, while group B is characterized by depleted δ¹⁸O values due to recharge under colder climate. Deuterium excess values plot within the region of modern precipitation and dilution of groundwater by precipitating water. The groundwater residence time is between 1000 and 2000 years and combining ¹⁴C -age with SO₄²⁻ shows a contrasting effect on groundwater on both sides of Khedr Almai Fault and the Zubair anticline, which indicates the role of these geological structures on the hydrochemical evolution in the western part. Jabal Sanam shows no clear effect in this regard. The ratio Cl⁻/Br⁻ and sulfate in groundwater showed that the measured salinity in groundwater is the result of a mixing process between groundwater, seawater intruding from Khor Al-Zubair Channel, and water from septic tanks in addition to dry and wet sea spray, and irrigation return-flow.

中文翻译：

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伊拉克巴士拉上迪比迪巴蓄水层盐度的可能来源

在Al-Zubair和Safwan之间的地区以及伊拉克南部的Khor Al-Zubair航道附近，调查了地下水盐分的增加。分析了浅层含水层中的39个地下水样品和Khor Al-Zubair海峡中的1个样品。平均总溶解固体为7556 mg / L。的δ ² H和δ ¹⁸在两组ø情节是全球大气降水线以下。基团A表示灌溉回归流的蒸发作用，而B组的特征在于耗尽δ ^18个O值由于下较冷气候充值。氘的过量值绘制在现代降水和降水使地下水稀释的区域内。地下水的停留时间在1000到2000年之间，相加为¹⁴含SO ₄ ^2−的C年龄对Khedr Almai断层和Zubair背斜两侧的地下水形成对比作用，表明这些地质结构对西部水化学演化的作用。Jabal Sanam在这方面没有显示明显的效果。比率氯^- /溴^-和硫酸在地下水表明，在地下水中的测量盐度是地下水之间的混合处理的结果，海水除了从霍尔铝祖贝尔通道和水侵入从化粪池干，湿海喷雾，以及灌溉回流。