期刊
JOURNAL OF HYDROLOGY
卷 300, 期 1-4, 页码 188-198出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhydrol.2004.06.004
关键词
tidal effect; periodicities; time series analysis; correlation; groundwater quality
The purpose of this study is to apply time series analysis to investigate whether the groundwater quality in the coastal area is affected by the tide. Continuous and regular in situ monitoring data of electrical conductivity (EC) and groundwater level, and tidal level data measured by the National Oceanographic Research Institute were used for the time series analysis. Through the time series analysis, it is known that EC and groundwater level conspicuously fluctuate with two periodicities (15.4 and 0.52-day), which is very similar to those of the tide. Also the behaviors of their fluctuations vary in accordance with the tidal period. These indicate that the groundwater quality has been mainly controlled by the tidal level, and the strength of tidal effect on the groundwater quality is different according to the tidal period. (C) 2004 Elsevier B.V. All rights reserved.
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