TY - GEN
T1 - Laboratory study of sand bar development at a river entrance
AU - Tanaka, Hitoshi
AU - Nguyen, Tu Trong
AU - Wada, Naohiro
N1 - Funding Information:
The authors would like to express their grateful thanks to the Sendai Office of River and National Highway, Ministry of Land, Infrastructure and Transport for their kind permission to carry out field observation. A part of this study was supported by Grant-in-Aid for Scientific Research from JSPS (No. 14350262).
Publisher Copyright:
© 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges. All Rights Reserved.
PY - 2005
Y1 - 2005
N2 - River mouth topography changes continuously due to the actions of waves and river flow. Under the combination effect of waves, tide movement, long-shore and cross-shore current, and river flow, sediment is transported and deposited at the river mouth, forming sand bars at this area. Sand bars at river mouth influence extremely to river flow features in the river, obstruct navigation and flood discharge. The feature of waves, river flow and bed layer material are the main factors that relate directly to the characteristics of sand bar. However, it can prevent the river from salinity intrusion, and be flushed easily in flood season. Understanding sand bar formation at river mouth and its size are necessary for flooding and navigation control. In this study, the actions of river flow are eliminated because river discharge is often small in the winter this is good condition for sand bar formation at river mouth. The development of sand bar is highly considered by a lot of managers, engineers both in the elevation and horizon. This study will show the estimation about the height and width of sand bar at river entrance as well as its profile area. A field observation on the formation process of sand bar was carried out at river mouth after being flushed by the flood in the river to verify laboratory experimental results.
AB - River mouth topography changes continuously due to the actions of waves and river flow. Under the combination effect of waves, tide movement, long-shore and cross-shore current, and river flow, sediment is transported and deposited at the river mouth, forming sand bars at this area. Sand bars at river mouth influence extremely to river flow features in the river, obstruct navigation and flood discharge. The feature of waves, river flow and bed layer material are the main factors that relate directly to the characteristics of sand bar. However, it can prevent the river from salinity intrusion, and be flushed easily in flood season. Understanding sand bar formation at river mouth and its size are necessary for flooding and navigation control. In this study, the actions of river flow are eliminated because river discharge is often small in the winter this is good condition for sand bar formation at river mouth. The development of sand bar is highly considered by a lot of managers, engineers both in the elevation and horizon. This study will show the estimation about the height and width of sand bar at river entrance as well as its profile area. A field observation on the formation process of sand bar was carried out at river mouth after being flushed by the flood in the river to verify laboratory experimental results.
KW - Bar profile
KW - River mouth
KW - Sand bar formation
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M3 - Conference contribution
AN - SCOPUS:84873037751
T3 - 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges
SP - 3778
EP - 3787
BT - 31st IAHR Congress 2005
A2 - Byong-Ho, Jun
A2 - Sang, Il Lee
A2 - Won, Seo Il
A2 - Gye-Woon, Choi
PB - Korea Water Resources Association
T2 - 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges
Y2 - 11 September 2005 through 16 September 2005
ER -