Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Palermo, via La Malfa 153, 90146, Palermo, Italy.
Environ Monit Assess. 2011 Feb;173(1-4):431-46. doi: 10.1007/s10661-010-1397-4. Epub 2010 Mar 3.
In this paper, in an attempt to reveal possible changes connected to natural or anthropogenic causes, the main results of hydrogeochemical monitoring carried out at Mount Etna are evaluated. We report on the salinity contents of the groundwaters that flow in fractured volcanics, which make up the flanks of the volcano. These waters, analyzed for major ion chemistry, were sampled regularly from 1994 to 2004. Basing on nonparametric Sen's slope estimator, time series of groundwater composition reveal that the salinity of most of the Etnean aquifers increased by 0.5% to 3.5% each year during this period. This change in the water chemistry is clearly referable to the overexploitation of the aquifers. This increasing trend needs to be inverted urgently; otherwise, it will cause a shortage of water in the near future, because the maximum admissible concentration of salinity for drinking water will be exceeded.
本文旨在揭示与自然或人为原因有关的可能变化，评估了在埃特纳火山进行的水文地球化学监测的主要结果。我们报告了流经火山侧翼断裂火山岩的地下水的盐度含量。这些水的主要离子化学分析是在 1994 年至 2004 年期间定期采集的。基于非参数 Sen 斜率估计器，地下水成分的时间序列表明，在此期间，大多数埃特纳含水层的盐度每年增加 0.5%至 3.5%。这种水化学成分的变化显然与含水层的过度开采有关。这种上升趋势急需扭转；否则，在不久的将来将会导致水资源短缺，因为饮用水的最大允许盐度浓度将会超标。
