The aim of the present research is to identify the factors and processes to manage groundwater susceptibility using geostatistical techniques. Shortage of freshwater and drinking water are the major problems in the southeast coast of Tuticorin district, Tamil Nadu, India. Due to the different landscape and geological frame work across the coastal area, ever increasing population and manmade activities there is a necessity to check the groundwater quality in drinking and domestic water supply. Geostatistical analysis has been carried out through the field samples (24 nos) which were analyzed and visually interpreted in a graphical representation. The quality characteristics of the samples analysed using multivariate statistical analysis in the study area have been identified to be abnormal (EC, TDS, Cl and Na). The values are approximately 3 times exceeding the WHO standard for the villages of Sahupuram, Kayalpattinam, Arumuganeri, Vaalasamuthram and Arasadi spread over 300 km². Principle Component Analysis (PCA) indicates that the field of groundwater quality is predominantly associated with geogenic (rock-water interaction) and anthropogenic sources and domestic sewage. Findings of factors, cluster analysis (CA) and correlation matrix (CM) were also found to be consistant with the PCA results. It has been evident from the statistical analysis that the major groundwater quality is significantly influenced by EC, TDS, Cl and Na due to the inland salinity caused by seawater intrusion. Results of the study are expected to provide insights into taking effective action for groundwater quality protection by decision-makers on the Tuticorin coast of southern Tamil Nadu.

中文翻译：

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使用地统计方法研究 Tuticorin 沿海地区地下水质量及其特征，印度泰米尔纳德邦

本研究的目的是确定使用地质统计技术管理地下水敏感性的因素和过程。淡水和饮用水短缺是印度泰米尔纳德邦杜蒂戈林区东南沿海的主要问题。由于沿海地区不同的景观和地质框架，不断增加的人口和人为活动，有必要检查饮用水和生活供水中的地下水质量。地统计分析是通过实地样本（24 个）进行的，这些样本在图形表示中进行了分析和视觉解释。在研究区域使用多变量统计分析分析的样品的质量特征已被确定为异常（EC、TDS、Cl 和 Na）。² . 主成分分析 (PCA) 表明地下水质量领域主要与地质（岩水相互作用）和人为来源以及生活污水有关。还发现因素、聚类分析 (CA) 和相关矩阵 (CM) 的结果与 PCA 结果一致。统计分析表明，由于海水入侵导致内陆盐度升高，EC、TDS、Cl、Na对主要地下水水质影响显着。预计该研究结果将为泰米尔纳德邦南部杜蒂戈林海岸的决策者采取有效行动保护地下水质量提供见解。