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Accession number;04A0714035
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| Title;Spatial distribution analysis of sediment transport rate through drainage network |
| Author;
SHIMIZU O
(Miyazaki Univ.)
ARAYA T
(Hokkaido Univ.)
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Journal Title;Suikei Kozo to Ryuiki Dotai ni Motozuku Mizu, Dosha Ryushutsu Kiko to Saigai Kankyo ni kansuru Kenkyu Heisei 12-15 Nendo No.12306008
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Journal Code:N20041657
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ISSN:
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VOL.;NO.;PAGE.31-36(2004)
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| Figure&Table&Reference;FIG.5, REF.3 |
| Pub. Country;Japan |
| Language;English |
| Abstract;The authors proposed a method for estimating sediment yield in mountainous catchments in Japan. They applied this method to 42 tributary headwater basins in the Saru River watershed, Hokkaido, and estimated the sediment yield. The method is based on investigation of sediment accumulation behind check dams. The areas of the basins range from 0.6 to 93 km2. The check dams were built in 1957 to 1988. Field surveys in 1992 and 1993 showed their deposition pockets except two dams have filled up and overflowed with sediment. The past fill-up time for each dam was estimated by tree ring dating of deposits and by aerial photographs. Volume of sediment accumulation was estimated by channel-bed surveys. Annual sediment yield was calculated by dividing sediment volume by sedimentation period. Using these data they examined spatial distribution of sediment transport rates, especially changes of transport rate with basin size throughout the drainage network. |
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