title: Tracing the source of difficult to settle fine particles which cause turbidity in the Hitotsuse Reservoir, Japan.
abstract: A unique method to trace the source of "difficult-to-settle fine particles," which are a causative factor of long-term turbidity in reservoirs was developed. This method is characterized by cluster analysis of XRD (X-ray diffraction) data and homology comparison of major component compositions between "difficult-to-settle fine particles" contained in landslide soil samples taken from the upstream of a dam, and suspended "long-term turbid water particles" in the reservoir, which is subject to long-term turbidity. The experiment carried out to validate the proposed method, demonstrated a high possibility of being able to make an almost identical match between "difficult-to-settle fine particles" taken from landslide soils at specific locations and "long-term turbid water particles" taken from a reservoir. This method has the potential to determine substances causing long-term turbidity and the locations of soils from which those substances came. Appropriate countermeasures can then be taken at those specific locations.
authors.affiliation: Engineering Dept., Miyazaki Branch of Kyushu Electric Power Co, Inc., 2-23, Tachibana-dori 4-chome, Miyazaki 880-8544, Japan.
authors.forename: Toshiki
authors.initials: T
authors.lastname: Murakami
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Suzuki
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Oishi
authors.forename: Kenichi
authors.initials: K
authors.lastname: Ito
authors.forename: Toshio
authors.initials: T
authors.lastname: Nakao
mesh_terms: D007564:Japan; D014881:Water Supply; D014961:X-Ray Diffraction