Comparison between self‐organizing map and principal component analysis for water quality assessment and hydro‐geochemical characterization in dyke intruded complex geological settings

IF 1.7 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Water and Environment Journal Pub Date : 2023-03-02 DOI:10.1111/wej.12855

Surabhi Gupta, S. Maiti

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Abstract

Hydro‐geochemical characterization is challenging in dyke intruded complex geological setting. The comparison between self‐organizing map (SOM) classification and principal component analysis (PCA) is used for better understanding of hydrogeological process surrounding Amarpur dyke in Dhanbad district, Jharkhand. Total 30 water samples were collected and tested for 12 physicochemical parameters. The K‐means clustering with SOM grouped the water quality data into cluster 1 (46.67%, low mineralization), cluster 2 (36.67%, moderate mineralization) and cluster 3 (16.67%, high mineralization). The clusters of the majority of samples identified by PCA analysis is almost same as identified by SOM with little difficulty in discriminating between cluster 2 and cluster 3. The transformation of Ca‐HCO3 to Ca‐Cl‐SO4 occurred because of exchange of Ca2+ with Na+ adsorbed in the aquifer leading excess of sulphate ions. The results of this study suggest that SOM is an effective tool for a better understanding of patterns and processes driving water quality.

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自组织图与主成分分析在堤防侵入复杂地质环境中水质评价与水文地球化学表征的比较

在岩脉侵入的复杂地质环境中，水文地球化学表征具有挑战性。将自组织图(SOM)分类与主成分分析(PCA)进行比较，有助于更好地了解贾坎德邦丹巴德地区Amarpur堤岸周围的水文地质过程。共采集了30个水样，对12个理化参数进行了检测。基于SOM的K均值聚类将水质数据分为聚类1(46.67%，低矿化度)、聚类2(36.67%，中等矿化度)和聚类3(16.67%，高矿化度)。PCA识别的大部分样本的聚类与SOM识别的聚类几乎相同，在区分聚类2和聚类3方面没有什么困难。Ca - HCO3向Ca - Cl - SO4的转化是由于Ca2+与含水层中吸附的Na+交换导致硫酸盐离子过量。本研究的结果表明，SOM是更好地理解驱动水质的模式和过程的有效工具。

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来源期刊

Water and Environment Journal 环境科学-湖沼学

CiteScore

4.80

自引率

0.00%

发文量

审稿时长

18-36 weeks

期刊介绍： Water and Environment Journal is an internationally recognised peer reviewed Journal for the dissemination of innovations and solutions focussed on enhancing water management best practice. Water and Environment Journal is available to over 12,000 institutions with a further 7,000 copies physically distributed to the Chartered Institution of Water and Environmental Management (CIWEM) membership, comprised of environment sector professionals based across the value chain (utilities, consultancy, technology suppliers, regulators, government and NGOs). As such, the journal provides a conduit between academics and practitioners. We therefore particularly encourage contributions focussed at the interface between academia and industry, which deliver industrially impactful applied research underpinned by scientific evidence. We are keen to attract papers on a broad range of subjects including: -Water and wastewater treatment for agricultural, municipal and industrial applications -Sludge treatment including processing, storage and management -Water recycling -Urban and stormwater management -Integrated water management strategies -Water infrastructure and distribution -Climate change mitigation including management of impacts on agriculture, urban areas and infrastructure