确定复杂蓄水层中水文地球化学过程的地球统计分析:案例研究(西班牙东南部阿尔梅里亚省阿古阿都斯单元)  

Geostatistical Analysis to Identify Hydrogeochemical Processes in Complex Aquifers:A Case Study(Aguadulce Unit,Almeria,SE Spain)

作　　者：Linda Daniele Antonio Pulido Bosch Angela Vallejos Luis Molina 王胜（译） 

机构地区：[1]Department of Hydrogeology,University of Almeria。E-04120 Almeria,Spain [2]阿尔梅里亚大学 [3]不详

出　　处：《AMBIO－人类环境杂志》2008年第4期237-241,314,共5页

摘　　要：位于西班牙东南部的阿古阿都斯蓄水层单元是一个复杂的水文地质系统,因为蓄水地层的岩性变化大,单元内部发生的过程可变性大。数据的因子分析使变量数目削减到3个因子,这3个因子与诸如海水侵入和含盐沉积物淋溶等物理化学过程有关。对这些因子应用了变量统计分析,以采用普通克里金方法进行的空间布局研究为终结。这些因子的制图不需要使用纯粹的水文地球化学技术,就可以显示出一些过程的快速分化,这些过程影响着阿古阿都斯单元内加多尔(Gador)碳酸盐蓄水层的水。结果表明存在着一些与盐分有关的因子:海水侵入、古水、和/或泥灰土和蒸发盐沉积的淋溶。所使用的技术是有效的,研究结果与使用水文地球化学方法(传导率和温度的垂直记录、离子比率及其它)所得到的结果一致。本次研究的结果证明,这种分析方法的应用能够对影响地下水成分的因子进行有效的评估。The Aguadulce aquifer unit in southeastern Spain is a complex hydrogeological system because of the varied lithology of the aquifer strata and the variability of the processes that can take place within the unit.Factorial analysis of the data allowed the number of variables to be reduced to 3 factors,which were found to be related to such physico-chemical processes as marine intrusion and leaching of saline deposits.Variographic analysis was applied to these factors, culminating in a study of spatial distribution using ordinary kriging.Mapping of the factors allowed rapid differentiation of some of the processes that affect the waters of the Gador carbonate aquifer within the Aguadulce unit,without the need to recur to purely hydrogeochemical techniques.The results indicate the existence of several factors related to salinity:marine intrusion,paleowaters, and/or leaching of marls and evaporitic deposits.The techniques employed are effective,and the results conform to those obtained using hydrogeochemical methods (vertical records of conductivity and temperature,ion ratios,and others). The findings of this study confirm that the application of such analytical methods can provide a useful assessment of factors affecting groundwater composition.

关 键 词：水文地球化学方法 地球化学过程 统计分析 蓄水层 东南部 西班牙 单元 地球化学技术 

分 类 号：P59[天文地球—地球化学] TV223.4[天文地球—地质学]