The groundwater budget: a tool for preliminary estimation of the hydraulic connection between neighboring aquifers
The groundwater budget: a tool for preliminary estimation of the hydraulic connection between neighboring aquifers
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地下水预算：初步估计相邻含水层之间水力联系的工具
DOI：
10.1016/j.jhydrol.2017.10.066
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发表时间：
2018
影响因子：
6.4
通讯作者：
R. Mazza
中科院分区：
文献类型：
--
作者：
S. Viaroli;L. Mastrorillo;F. Lotti;V. Paolucci;R. Mazza
地下水管理当局通常使用地下水预算计算来评估不同目的的取水的可持续性。地下水预算计算并不总是提供可靠的信息，在相邻含水层之间存在水力连接的情况下，通常必须通过进一步的含水层监测来支持。里亚尔多平原含水层是超过10万人的战略饮用资源，是60 平方公里灌溉土地的储水量，也是矿泉水瓶装厂的来源。在很长一段时间内，直接补给与估计的自然流出和提取之间的比较突出了地下水流出总量约40%的严重缺水。地下水预算赤字应该是含水层枯竭的线索，但长期水位监测的结果允许观察到该含水层的良好状况。事实上，在里亚尔多平原，计算出的赤字与同期（1992-2014年）获得的含水层监测数据无法比较。地下水位的小波动和几乎稳定的河床泉水流量允许假定另外的含水层补给源。受限制的碳酸盐含水层局部与上述火山含水层混合，提供外部稳定的补给，减少了当地降雨变化的影响。地下水预算结果和长期含水层监测（泉水流量和/或水头振荡）相结合的方法提供了有关重要的外部地下水交换的信息，即使未被现场测量确定，并支持地下水资源管理的利益相关者。
Groundwater management authorities usually use groundwater budget calculations to evaluate the sustainability of withdrawals for different purposes. The groundwater budget calculation does not always provide reliable information, and it must often be supported by further aquifer monitoring in the case of hydraulic connections between neighboring aquifers.The Riardo Plain aquifer is a strategic drinking resource for more than 100,000 people, water storage for 60 km2of irrigated land, and the source of a mineral water bottling plant. Over a long period, the comparison between the direct recharge and the estimated natural outflow and withdrawals highlights a severe water deficit of approximately 40% of the total groundwater outflow. A groundwater budget deficit should be a clue to the aquifer depletion, but the results of long-term water level monitoring allowed the observation of the good condition of this aquifer. In fact, in the Riardo Plain, the calculated deficit is not comparable to the aquifer monitoring data acquired in the same period (1992–2014). The small oscillations of the groundwater level and the almost stable streambed spring discharge allows the presumption of an additional aquifer recharge source.The confined carbonate aquifer locally mixes with the above volcanic aquifer, providing an externally stable recharge that reduces the effects of the local rainfall variability.The combined approach of the groundwater budget results and long-term aquifer monitoring (spring discharge and/or hydraulic head oscillation) provides information about significant external groundwater exchanges, even if unidentified by field measurements, and supports the stakeholders in groundwater resource management.
影响因子：
6.3
作者：
J. Bloomfield;B. Marchant;S. Bricker;R. Morgan
通讯作者：
J. Bloomfield;B. Marchant;S. Bricker;R. Morgan