Author(s): Carlos Beitia; Keisuke Nakayama; Naofumi Ohtsu; Misao Yamane; Shintaro Yamasaki; Yasuyuki Maruya; Katsuaki Komai
Linked Author(s): Katsuaki Komai
Keywords: Sediment transportation; Fingerprint-type method; Geochemical composition analysis; Particle size distribution
Abstract: This work presents the use of a fingerprint-type method, in which the geochemical and physical properties of the sediments from 18 sub-domains and the downstream end from the Oromushi River in Hokkaido Prefecture, Japan were used to identify the main suspended sediment sources within the basin. Firstly, it was found that there is an important correlation between the particle size distribution and its settling velocity profile and the land use. These properties could be thus used to discriminate the main suspended sediment sources. Furthermore, according to the X-ray fluorescence analysis, it was found that the geochemical composition of the sediments can be used to evaluate the contribution from each sub-domain to the downstream end, which was confirmed by the agreement of the results obtained from the particle size distribution analysis.
Year: 2014