@article{oai:niigata-u.repo.nii.ac.jp:00028148,
 author = {橋本, 哲夫 and 樋口, 靖 and 酒井, 裕二 and 仲川, 隆夫 and 青木, 滋 and 佐藤, 修},
 journal = {新潟大学積雪地域災害研究センター研究年報, 新潟大学積雪地域災害研究センター研究年報},
 month = {Dec},
 note = {Spring water (15 samples) and river water (2 samples), collected from the landslide area in the Kanayama Valley belonging to the Ura-River area during1984-1985, were analyzed with aspects to tritium and six major ionic constituents, including Ca^<2+>, Mg^<2+>, Na^+ + K^+, SO^<2->_4, HCO^-_3, and Cl^- ions. Some springs, in the middle stream areas and river water appeared to be classified into several groups according to the ion concentrations while the T-concentrations didn't show any correlation to such classification, especially in the upper stream areas. It was confirmed that the ionic concentrations are greatly dependent on the oxidizing zone in the vicinity of spring outlet although the T-concentrations should have reflected some aquifer properties. On the basis of intrinsic decay-properties of tritium, the ages of some aquifers were assigned to three groups; most all aquifers consisting of relatively new aquifers precipitated after 1969, two aquifers of comparatively older ages than 1956, and one high T-concentration aquifer owing to an artificial addition of T from nuclear explosion tests pervading in the atmosphere during 1961-1968 as shown schematically in Fig. 4. It was also suggested that the aged or older aquifers should be presumably related to any causes of landslide phenomena as well as the dissolved ion-concentrations.},
 pages = {71--80},
 title = {地すべり多発地帯からの湧水中のトリチウムと溶存イオン濃度の年間変動 : 姫川水系浦川流域金山沢について},
 volume = {8},
 year = {1986}
}