@article{oai:u-ryukyu.repo.nii.ac.jp:02002660,
 author = {宜保, 清一 and 宮良, 志乃 and 中村, 真也 and Gibo, Seiichi and Miyara, Shino and Nakamura, Shinya},
 issue = {49},
 journal = {琉球大学農学部学術報告, The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus},
 note = {The clarify the permeability of a soil crust, the constant head permeability tests were carried out on the kaolinite and the red soil, and the hydraulic gradient i where Darcy's law was valid and the saturated hydraulic conductivity of crusts mainly examined. For the kaolinite crust, the flux q gradually increased with the hydraulic gradient i, and reached its peak at different hydraulic gradients ranging from 80 to 100 and ended as a down-ward curve. For consolidated crusts at 70 hydraulic gradient of valid region of Darcy's a law, the q-i relationobtained by being tested at the hydraulic gradients below 70 was expressed as a straight line which had the saturated hydraulic conductivity of k=6.80 × 10^<-5>cm/s. For the red soil crust, all experimental data points of q and i were approximately on a straight line at the hydraulic gradients below 30, and thus k=2.50 × 10^<-4>cm/s was given., 紀要論文},
 pages = {159--163},
 title = {土壌クラストの透水性}
}