Hydrogeochemical variables regionalization - applying cluster analysis for a seasonal evolution model from an estuarine system affected by AMD

作     者：Grande, J. A. Carro, B. Borrego, J. de la Torre, M. L. Valente, T. Santisteban, M. 

作者机构：Univ Huelva Escuela Tecn Super Ingn Ctr Invest Ingn Mineria Sostenible Palos De La Frontera 21819 Huelva Spain Univ Huelva Fac Ciencias Expt Grp Geoquim Ambiental Huelva 21071 Spain Univ Minho Ctr Invest Geol Ordenamento & Valorizacao Recurso Dept Ciencias Terra P-4710057 Braga Portugal 

出 版 物：《MARINE POLLUTION BULLETIN》 (海洋污染通报)

年 卷 期：2013年第69卷第1-2期

页      面：150-156页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

主　　题：Estuarine system Acid mine drainage Hydrogeochemical zonation Tinto and Odiel rivers Cluster analysis 

摘      要：This study describes the spatial evolution of the hydrogeochemical parameters which characterise a strongly affected estuary by Acid Mine Drainage (AMD). The studied estuarine system receives AMD from the Iberian Pyrite Belt (SW Spain) and, simultaneously, is affected by the presence of an industrial chemical complex. Water sampling was performed in the year of 2008, comprising four sampling campaigns, in order to represent seasonality. The results show how the estuary can be divided into three areas of different behaviour in response to hydrogeochemical variables concentrations that define each sampling stations: on one hand, an area dominated by tidal influence;in the opposite end there is a second area including the points located in the two rivers headwaters that are not influenced by seawater;finally there is the area that can be defined as mixing zone. These areas are moved along the hydrological year due to seasonal chemical variations. (C) 2013 Elsevier Ltd. All rights reserved.