@article{oai:u-ryukyu.repo.nii.ac.jp:02012318,
 author = {安元, 純 and 聖川, 健斗 and 仲栄真, 史哉 and 砥綿, 泰弘 and 中野, 拓治 and Yasumoto, Jum and Hijikawa, Kento and Nakaema, Fumiya and Towata, Yasuhiro and Nakano, Takuji},
 issue = {4},
 journal = {土木学会論文集B1（水工学）},
 month = {},
 note = {Multivariate statistical techniques, principal component and cluster analysis were applied to the data on groundwater quality of Limestone aquifer in the southern region of Okinawa, Japan, to extract principal factors corresponding to the different sources of variation in the hydrochemistry, with the objective of defining the main controls on the hydrochemistry at the regional scale. As a result of principal component analysis, ground water quality in the region could be classified into four principal components, that is, the groundwater is affected according to salt water and fertilizer (component 1), limestone dissolution (component 2), a redox state of a ground-water (component 3) and nitrogen accumulation/ denitrification (component 4). The cluster analysis was classified into four clusters according to the pollution situation of groundwater pollution in the study area, and the classification result was affected by season., 論文},
 pages = {595--600},
 title = {多変量解析を用いた石灰岩帯水層における地下水水質の統計的分類},
 volume = {69},
 year = {2013}
}