Universal index formulae of seawater quality based on normalized transformation

Li Zuoyong; Liang Xiaolong; Wang Jiayang

doi:10.3969/j.issn.0253-4193.2015.01.009

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Li Zuoyong, Liang Xiaolong, Wang Jiayang. Universal index formulae of seawater quality based on normalized transformation[J]. Haiyang Xuebao, 2015, 37(1): 80-87. doi: 10.3969/j.issn.0253-4193.2015.01.009

Citation:

Li Zuoyong, Liang Xiaolong, Wang Jiayang. Universal index formulae of seawater quality based on normalized transformation[J]. Haiyang Xuebao, 2015, 37(1): 80-87. doi: 10.3969/j.issn.0253-4193.2015.01.009

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Universal index formulae of seawater quality based on normalized transformation

doi: 10.3969/j.issn.0253-4193.2015.01.009

College of Resources and Environment, Chengdu University of Information and Technology, Chengdu 610225, China

Received Date: 2013-10-09
Rev Recd Date: 2014-05-15

Abstract

Abstract

This study aims to set up several index formulae for assessing the seawater quality ,which enjoy the priority of being simple in form,easy in calculation and universal in applications. On the bases of the seawater quality standards(GB 3097-1997),the proposed formulae,which make the varied rage of the normalized index values of 27 indexes in each grade standards of seawater to be conformity with those of the normalized index values of 72 indexes in same grade standards of 3 classified water body ,have been established,if only it can be properly set a reference value and normalized transformation form as well as make a normalized transformation in the grade standard value for each index of seawater .Therefore,the 6 optimized universal index formulae,which are suitable to the environmental quality evaluation of 72 normalized index values of 3 classified water body,can also be suitable to the evaluation of 27 normalized index values of seawater quality. Furthermore,in order to test the practical effectiveness of the 6 index formulae,it could be applied to the practical quality evaluations of seawater for 2 cases of the coastal waters in Xiamen City and in Yangtze River Estuary. The evaluation results of 6 universal index formulae proved to be basically in full conformity with those obtained from the commonly used evaluation methods. The results showed that not only the 6 universal index formulae to make the evaluations between land water body and seawater body universal,unified,normalized and simplified,but also the ideas and methods of normalized transformation can be reference for the studies of water resources and water security.
- normalized transformation,
- seawater quality evaluation,
- eutrophic evaluation,
- index formula

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References(18)

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