@article{oai:niigata-u.repo.nii.ac.jp:00028051,
 author = {渡部, 直喜 and 大木, 靖衛 and 佐藤, 修 and 日下部, 実},
 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 = {Mar},
 note = {Many landslides classified into Tertiary type landslides have occurred in the Niigata Prefecture. The Matsunoyama town located in the southwestern Niigata prefecture is typical of landslide areas. The groundwater behavior is one of the most important factors for landslide movements. There are Na-Cl type groundwaters of high concentration in several landslides including the Matsunoyama landslides. The Na-Cl type groundwaters cannot be derived from reactions between groundwater and rock forming minerals. Na-Cl type geothermal waters have developed in Niigata sedimentary basin including the Matsunoyama. These are similar to the geopressured hydrothermal system in the Gulf of Mexico, USA. The Na-Cl type groundwaters have been formed by mixing between shallow meteoric groundwaters and deep geothermal waters on the basis of geochemical analyses. This suggests the deep geothermal waters rise through fault fractures and inject into shallow groundwaters close to the slip plane of landside block.},
 pages = {81--92},
 title = {新潟県松之山地すべり地のNa-Cl型地下水の起源},
 volume = {18},
 year = {1997}
}