Using Freshwater Heads to Analyze Flow Directions in Saline Aquifers of the Pingtung Plain, Taiwan

doi:10.3390/w13243491

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Engineering and Science (including master's program) > Periodical Articles > Item 310902800/34318

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://ir.cnu.edu.tw/handle/310902800/34318

题名:	Using Freshwater Heads to Analyze Flow Directions in Saline Aquifers of the Pingtung Plain, Taiwan
作者:	Chiu, Yung-Chia Chen, Chun-Hung Cheng, Yun-Ta Chen, Wenfu
贡献者:	Natl Taiwan Ocean Univ, Inst Earth Sci MOEA, Water Resources Planning Inst, Water Resources Agcy Chia Nan Univ Pharm & Sci, Dept Environm Engn & Sci
关键词:	variable-density groundwater freshwater head Pingtung Plain Taiwan
日期:	2021
上传时间:	2023-11-11 11:43:03 (UTC+8)
出版者:	MDPI
摘要:	The hydraulic head is the most important parameter for the study of groundwater. However, a head measured from observation wells containing groundwater of variable density should be corrected to a reference density (e.g., a freshwater head). Some previous case studies have used unknown density hydraulic heads for calibrating flow models. Errors arising from the use of observed hydraulic head data of unknown density are, therefore, likely one of the most overlooked issues in flow simulations of seawater intrusion. Here, we present a case study that uses the freshwater head, instead of the observed hydraulic head, to analyze the flow paths of saline groundwater in the coastal region of the Pingtung Plain, Taiwan. Out of a total of 134 observation wells within the Pingtung Plain, 19 wells have been determined to be saline, with Electric Conductivity (EC) values higher than 1500 mu S/cm during 2012. The misuse of observed hydraulic heads causes misinterpretation of the flow direction of saline groundwater. For such saline aquifers, the determination of a freshwater head requires density information obtained from an observation well. Instead of the purging and sampling method, we recommend EC logging using a month interval. Our research indicates that EC values within an observation well within saline aquifers vary not only vertically but also by season.
關聯:	WATER-SUI, v.13, n.24, pp.3491
显示于类别:	[Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	946	检视/开启
w13243491.pdf		2088Kb	Adobe PDF	198	检视/开启

在CNU IR中所有的数据项都受到原著作权保护.

TAIR相关文章

数据加载中.....