@article{oai:niigata-u.repo.nii.ac.jp:00028233,
 author = {吉田, 昭治 and 青木, 滋},
 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 = {A portion of the record obtained from an automatic water-level recorders in operation in a shallower well (Yamaguchi's well with depth of 6.58m) and a deeper well (Asazuma's well with depth of 16.61m) in the Niigata sand dune is reproduced as Fig 2. Detailed examination of these diagrams shows that the water level in both of these wells recovered from a low stage in summer or fall seasons to a high stage in winter season. The average annual change of water level was 0.81m in the shallower Yamaguchi's well and was 0.39m in the deeper Asazuma's well. The approximate figures of p_a, G and ∆M can de roughly estimated as shown in Table 3 from plotting (P-E) versus ∆H (Fig.5) on the basis of the following equation of water balance; P_a・∆H = (P-E) - (G+ ∆M) in which P is the precipitation on the soil surface, E the evapotranspiration from the soil surface, G the net ground-water outflow, ∆M the increment in soil moisture, ∆H the rise of ground-water level and P_a the air ratio (% by volume). These quantities are expressed as millimeters depth on the water area for some convenient time interval, where the surface outflow is neglected.},
 pages = {123--128},
 title = {新潟砂丘の水収支 : その1},
 volume = {2},
 year = {1980}
}