Relaxation and sensitivity of steep sedimentary cascade in Japan
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Accession number;04A0714034
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| Title;Relaxation and sensitivity of steep sedimentary cascade in Japan |
| Author;
MARUTANI T
(Shinshu Univ., Nagano, Jpn)
KASAI M
(Macquarie Univ., Nsw, Aus)
MAITA H
(Tsukuba Univ., Ibaragi, Jpn)
BRIERLEY G
(Macquarie Univ., Nsw, Aus)
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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.23-30(2004)
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| Figure&Table&Reference;FIG.2, TBL.1, REF.8 |
| Pub. Country;Japan |
| Language;English |
| Abstract;Continuous cross section measurements of the channel bed were conducted on Oyabu creek (catchment area 5.2km2) in southern Kyushu and Higashi-gochi creek (catchment area 28km2) in central Japan, respectively for a period of 8 years and 6 years. Based on the measurements, relaxation paths of sediment storage changes after a major aggradation in the mountainous streams are presented. The relaxation paths relate to the sensitivity of channel bed to sediment adjustment. The both streams have attained an apparent stable channel bed condition through the exponential relaxation process after rapid changes in the river bed following the drastic aggradation. It took about 4 years in Oyabu creek and 3 years in Higashi-gochi creek to reach the stable state. |
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