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ID 118099
Title Alternative
FACTOR ANALYSIS OF SANDBAR DEFOMATION PROCESSES IN THE MIDDLE REACHES OF YOSHINO RIVER
Author
Nomura, Kazushi Tokusima University
Terai, Kazuhiro Tokusima University
Keywords
channel transition processes
natural and artificial impact
sandbar deformation
river channel fluctuation
fluctuation of volume in low-water channel
Content Type
Journal Article
Description
The Yoshino River, Japan, is rich in water resources, but simultaneously possesses high risk of flood disaster. River improvement works to reduce damage from the floods have been conducted which attain increase of the discharge capacity. On the other hand, local sediment deposition and scouring are growing concern by the repeated floods, decreasing of sediment supply and construction of river structure. In order to resolve these problems, it is necessary to understand the effects of natural and artificial impacts on the river channel. In this paper, the channel transition processes were studied in the Middle Yoshino River using aerial photo, morphology data. Natural and artificial impacts on those processes were evaluated from sandbar deformation, fluctuation of bed elevation and volume in low-water channel.
As a result, sandbar deformation by the floods and revetment works was confirmed. The floods and dam construction affected fluctuation of river channel with the sediment deposition and scouring.
Journal Title
Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)
ISSN
2185467X
Publisher
土木学会
Volume
71
Issue
4
Start Page
I_1141
End Page
I_1146
Published Date
2015
Rights
© 2015 公益社団法人 土木学会
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
jpn
TextVersion
Publisher
departments
Science and Technology