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Distribution of fresh water diatom valves in the surface sediments off the Tokachi-gawa, Teshio-gawa and Ishikari-gawa, Hokkaido, Japan
北海道の十勝川・天塩川・石狩川沖の表層堆積物における淡水生珪藻遺骸の広がり
2006
Chishitsugaku zasshi
北海道の十勝川・天塩川・石狩川沖の表層堆積物における淡水生珪藻遺骸の広がり
Surface marine sediments seaward of the Tokachi-gawa, Teshio-gawa and Ishikari-gawa, the three biggest rivers in Hokkaido, were analysed to determine the distribution of fresh-water diatom valves that were transported to the sea by the rivers. Samples were collected from marine sediments a few cm below the seafloor. Three relationships with the percentage of fresh water valves were examined distance from the river mouth, distance from shore line, and water depth. The results of this
doi:10.5575/geosoc.112.594
fatcat:loklueo25nf4ngchlhd7zrncsq