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Simulating Future Groundwater Recharge in Coastal and Inland Catchments
Water Resources Management ( IF 4.3 ) Pub Date : 2021-07-31 , DOI: 10.1007/s11269-021-02907-2
Gianluigi Busico 1, 2 , Maria Margarita Ntona 1, 2 , Konstantinos Voudouris 1 , Nerantzis Kazakis 1 , Sílvia C. P. Carvalho 3 , Olga Patrikaki 4
Affiliation  

Groundwater is a primary source of drinking water in the Mediterranean, however, climate variability in conjunction with mismanagement renders it vulnerable to depletion. Spatiotemporal studies of groundwater recharge are the basis to develop strategies against this phenomenon. In this study, groundwater recharge was spatiotemporally quantified using the Soil and Water Assessment Tool (SWAT) in one coastal and one inland hydrological basin in Greece. A double calibration/validation (CV) procedure using streamflow data and MODIS ET was conducted for the inland basin of Mouriki, whereas only ET values were used in the coastal basin of Anthemountas. Calibration and simulation recharge were accurate in both sites according to statistical indicators and previous studies. In Mouriki basin, mean recharge and runoff were estimated as 16% and 9%, respectively. In Anthemountas basin recharge to the shallow aquifer and surface runoff were estimated as 12% and 16%, respectively. According to the predicted RCP 4.5 and 8.5 scenarios, significant variations in groundwater recharge are predicted in the coastal zone for the period 2020–2040 with average annual recharges decreasing by 30% (RCP 4.5) and 25% (RCP 8.5). Variations in groundwater recharge in the inland catchment of Mouriki were insignificant for the simulated period. Anthemountas basin was characterized by higher runoff rates. Groundwater management in coastal aquifers should include detailed monitoring of hydrological parameters, reinforced groundwater recharge during winter and reduced groundwater abstraction during summer depending on the spatiotemporal distribution of groundwater recharge.



中文翻译:

模拟沿海和内陆集水区未来的地下水补给

地下水是地中海地区饮用水的主要来源,然而,气候多变性和管理不善使其容易枯竭。地下水补给的时空研究是针对这种现象制定策略的基础。在这项研究中,使用土壤和水评估工具 (SWAT) 在希腊的一个沿海和一个内陆水文盆地对地下水补给进行了时空量化。对 Mouriki 内陆盆地进行了使用流量数据和 MODIS ET 的双重校准/验证 (CV) 程序,而在 Anthemountas 沿海盆地仅使用了 ET 值。根据统计指标和先前的研究,两个站点的校准和模拟补给都是准确的。在 Mouriki 盆地,平均补给和径流估计为 16% 和 9%,分别。在 Anthemountas 盆地,对浅层含水层的补给和地表径流分别估计为 12% 和 16%。根据预测的 RCP 4.5 和 8.5 情景,预计 2020-2040 年沿海地区地下水补给量将发生显着变化,年平均补给量分别下降 30% (RCP 4.5) 和 25% (RCP 8.5)。在模拟时期,Mouriki 内陆集水区地下水补给的变化微不足道。Anthemountas 盆地的特点是径流率较高。沿海含水层的地下水管理应包括详细监测水文参数、冬季加强地下水补给和夏季根据地下水补给的时空分布减少地下水抽取。在 Anthemountas 盆地,对浅层含水层的补给和地表径流分别估计为 12% 和 16%。根据预测的 RCP 4.5 和 8.5 情景,预计 2020-2040 年沿海地区地下水补给量将发生显着变化,年平均补给量分别下降 30% (RCP 4.5) 和 25% (RCP 8.5)。在模拟时期,Mouriki 内陆集水区地下水补给的变化微不足道。Anthemountas 盆地的特点是径流率较高。沿海含水层的地下水管理应包括详细监测水文参数、冬季加强地下水补给和夏季根据地下水补给的时空分布减少地下水抽取。在 Anthemountas 盆地,对浅层含水层的补给和地表径流分别估计为 12% 和 16%。根据预测的 RCP 4.5 和 8.5 情景,预计 2020-2040 年沿海地区地下水补给量将发生显着变化,年平均补给量分别下降 30% (RCP 4.5) 和 25% (RCP 8.5)。在模拟时期,Mouriki 内陆集水区地下水补给的变化微不足道。Anthemountas 盆地的特点是径流率较高。沿海含水层的地下水管理应包括详细监测水文参数、冬季加强地下水补给和夏季根据地下水补给的时空分布减少地下水抽取。

更新日期:2021-08-01
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