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首页> 外文期刊>Nordic hydrology >Assessing interactions between groundwater and surface water in a Pampean stream
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Assessing interactions between groundwater and surface water in a Pampean stream

机译：评估潘邦溪流中地下水与地表水之间的相互作用

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摘要

In the south of Cordoba (Argentina), groundwater from the unconfined aquifer, presents scarce suitability due to high values of salts, sulfates, arsenic and fluorides. This situation makes it necessary to explore other possibilities, for example, conjunctive use of groundwater and surface water. The objective of this work was to describe the dynamic and geochemical relationships between surface water and groundwater in the medium-low basin of the Aji stream. The conceptual model was supported by the use of stable ~(18)O/~(16)O and ~2H/~1H isotopes and it was validated through numerical modeling and ~(222)Rn activity results. The stream water is sodium bicarbonate fresh type (460-1,400 µS/cm). The aquifer presents fresh to salt water (720-14,000 µS/cm), from sodium bicarbonate to sodium chloride type. The isotopic results show that there is a straight mixing line between surface water and groundwater samples. The geochemical numerical modeling revealed that in the mixing models between stream and aquifer, for hydraulically linked samples, the aquifer only provides 2% of the total stream flow. This was validated through ~(222)Rn results, which led us to the estimation of about 2% of groundwater supply in summer.
机译：在科尔多瓦（阿根廷）南部，由于盐，硫酸盐，砷和氟化物的含量较高，无限制含水层的地下水缺乏适应性。这种情况使得有必要探索其他可能性，例如联合使用地下水和地表水。这项工作的目的是描述阿治河中低流域地表水与地下水之间的动态和地球化学关系。该概念模型得到稳定的〜（18）O /〜（16）O和〜2H /〜1H同位素的支持，并通过数值模拟和〜（222）Rn活性结果进行了验证。流水是碳酸氢钠新鲜型（460-1,400 µS / cm）。从碳酸氢钠到氯化钠，含水层呈现出淡淡的咸水状态（720-14,000 µS / cm）。同位素结果表明，地表水和地下水样品之间存在一条直线。地球化学数值模型表明，在水流与含水层之间的混合模型中，对于水力连接的样品，含水层仅提供了总水流的2％。这通过〜（222）Rn结果得到了验证，这使我们估计夏季的地下水供应量约为2％。

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  • 来源
    《Nordic hydrology》 |2017年第4期|1045-1057|共13页
  • 作者

    F.Becher Quinodoz; M.Blarasin; H.Panarello; E.Ducos;

  • 作者单位

    CONICETUNRC, Ruta 36 km 602,Rio Cuarto,Cordoba,Argentina;

    Dpto. Geologia,Universidad Nacional de Rio Cuarto (UNRC),Ruta 36 km 602,Rio Cuarto,Cordoba,Argentina;

    Instituto de Geocronologia y Geologia Isotopica.(INGEIS-CONICET-UBA)Buenos Aires,Argentina;

    Instituto de Geocronologia y Geologia Isotopica.(INGEIS-CONICET-UBA)Buenos Aires,Argentina;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    geochemical modeling; groundwater; radon; stable isotope; surface water;

    机译：地球化学模拟;地下水;氡;稳定同位素地表水;

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