Assessment of groundwater vulnerability in the Río Artiguas basin, Nicaragua
Assessment of groundwater vulnerability in the Río Artiguas basin, Nicaragua
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DOI：
10.1007/s00254-006-0233-1
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发表时间：
2006-03
期刊：
影响因子：
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通讯作者：
José Alfredo Mendoza;Gerhard Barmen
中科院分区：
文献类型：
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作者：
José Alfredo Mendoza;Gerhard Barmen
尼加拉瓜中部的Río Artiguas盆地是人类活动造成环境恶化的一个独特例子。金矿开采中使用的重金属和其他废物不断释放到河流中，对水质构成威胁。本文旨在评价RíoArtiguas流域地下水内在脆弱性，为水资源的可持续利用提供信息。采用DRASTIC和GOD方法对流域内的相对污染潜势进行了分析。对DRASTIC进行了修改，以包括地质结构对脆弱性的影响程度。中度脆弱地区包括流域的大部分沿着河谷和低地，并在流域下游增加。由此产生的脆弱性地图显示，有限的地下水资源很容易受到地表水污染，因为高度脆弱的地区沿着河谷汇聚。
The Río Artiguas basin in central Nicaragua shows a distinctive case of environmental deterioration due to anthropogenic activities. Heavy metals used in gold mining and other wastes are continuously released into the rivers, representing a threat to the water quality. This article aims to evaluate the groundwater intrinsic vulnerability in the Río Artiguas basin and to provide information for sustainable use of water resources. The DRASTIC and GOD methods were used to analyse the relative pollution potential within the basin. DRASTIC was modified to include the degree of influence that geological structures have on the vulnerability. Moderate vulnerability areas cover most of the basin along stream valleys and lowlands, increasing downstream in the basin. The resulting vulnerability maps show that the limited groundwater resources are susceptible to surface water pollution as high vulnerability areas converge along the river valleys.