Interactions of Morphology Change and Wave and Current Fields around a River Mouth under Severe Flood

2008 ◽  
Vol 55 ◽  
pp. 6-10 ◽  
Author(s):  
Yoshimitsu TAJIMA ◽  
Haijiang LIU ◽  
Yuya SASAKI ◽  
Shinji SATO
Keyword(s):  
River Mouth ◽  
Morphology Change ◽  
Severe Flood

scholarly journals INVESTIGATION OF DYNAMIC MORPHOLOGY CHANGE AROUND THE SHIMADA RIVER MOUTH BASED ON ANALYSIS OF SUCCESSIVE STILL CAMERA IMAGES

2011 ◽  
Vol 67 (2) ◽  
pp. I_1045-I_1050
Author(s):  
Yoshimitsu TAJIMA ◽  
Yuichi TANJI ◽  
Kenichi MIYAKE ◽  
Hiroyuki KATO ◽  
Akiyoshi NAKAYAMA
Keyword(s):  
River Mouth ◽  
Morphology Change ◽  
Dynamic Morphology

Coastal and River Mouth Morphology Change in Sri Lanka Due to the 2004 Indian Ocean Tsunami

2007 ◽  
Author(s):  
Hitoshi Tanaka ◽  
Kazuo Ishino ◽  
Bandara Nawarathna ◽  
Hajime Nakagawa ◽  
Shinichiro Yano
Keyword(s):  
Sri Lanka ◽  
Indian Ocean ◽  
River Mouth ◽  
Indian Ocean Tsunami ◽  
2004 Indian Ocean Tsunami ◽  
Morphology Change

scholarly journals Hydraulic Planning in Insular Urban Territories: The Case of Madeira Island—São Vicente

Water ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 112
Author(s):  
Sérgio Lousada ◽  
Leonardo Gonçalves ◽  
Alper Atmaca
Keyword(s):  
Return Period ◽  
Drainage Basin ◽  
River Mouth ◽  
Gumbel Distribution ◽  
Roughness Coefficient ◽  
Entire Volume ◽  
Detention Basin ◽  
Severe Flood ◽  
Urban Territories ◽  
Drainage Capacity

This study aims to examine the flood propensity of the main watercourse of São Vicente drainage basin and, if relevant, to propose two methodologies to alleviate the impacts, i.e., detention basin sizing and riverbed roughness coefficient adjustment. Geomorphological data were obtained from the watershed characterization process and used through the SIG ArcGIS software for the flood propensity assessment and then for the calculation of the expected peak flow rate for a return period of 100 years through the Gumbel Distribution. Subsequently, the drainage capacity of the river mouth was verified using the Manning-Strickler equation, in order to establish whether the river mouth of the watershed has the capacity to drain the entire volume of rainwater in a severe flood event. In summary, it was possible to conclude that São Vicente’s watershed river mouth is not able to completely drain the rain flow for the established return period. Thus, its drainage capacity was guaranteed by modifying the walls and streambed roughness coefficient and by sizing the detention basin using the Dutch and the Simplified Triangular Hydrograph methods.

scholarly journals RELATIONSHIP BEWTWEEN ESTUARY MORPHOLOGY CHANGE AND SAND TERRACE FORMATION AT THE DA RANG RIVER MOUTH, VIETNAM

2016 ◽  
Vol 72 (2) ◽  
pp. I_892-I_897
Author(s):  
Hitoshi TANAKA ◽  
Vo Cong HOANG ◽  
Tran Minh THANH ◽  
Nguyen Trong HIEP ◽  
Nguyen Trung VIET
Keyword(s):  
River Mouth ◽  
Morphology Change ◽  
Estuary Morphology

scholarly journals RIVER MOUTH MORPHOLOGY CHANGE AND ITS PROBLEMS AFTER THE GREAT EAST JAPAN EARTHQUAKE TSUNAMI

2012 ◽  
Vol 68 (4) ◽  
pp. I_1735-I_1740 ◽  
Author(s):  
Ryutaro HIRAO ◽  
Hitoshi TANAKA ◽  
Makoto UMEDA ◽  
Tinh NGUYEN XUAN ◽  
Eko PRADJOKO ◽  
...  
Keyword(s):  
River Mouth ◽  
Great East Japan Earthquake ◽  
Morphology Change

scholarly journals Selective Movements of Sand and Gravels and Resulting Morphology Change around the Tenryu River Mouth

2010 ◽  
Vol 66 (1) ◽  
pp. 586-590
Author(s):  
Yoshimitsu TAJIMA ◽  
Madoka OKAZAKI ◽  
Haijiang LIU ◽  
Tomohiro TAKAGAWA ◽  
Shinji SATO
Keyword(s):  
River Mouth ◽  
Morphology Change

scholarly journals Centennial to Multi-Decadal Morphology Change and Sediment Budget Alteration with Consideration of the Impacts of the 2011 Tohoku Earthquake Tsunami along the Nobiru Coast, Japan

2021 ◽  
Vol 9 (3) ◽  
pp. 265
Author(s):  
Nguyen Trong Hiep ◽  
Hitoshi Tanaka ◽  
Nguyen Xuan Tinh
Keyword(s):  
Morphological Changes ◽  
River Mouth ◽  
Tohoku Earthquake ◽  
Sediment Budget ◽  
Sediment Supply ◽  
The 2011 Tohoku Earthquake ◽  
Morphology Change ◽  
Longshore Transport ◽  
Sediment Input ◽  
The Government

The Nobiru Coast is situated on the southwest of the Ishinomaki Bay. The 2011 Great East Japan Tsunami severely devastated the Nobiru Coast and the adjacent Naruse River mouth. In this study, an investigation was conducted based on the available historic maps and images combined with in situ surveys that revealed the century-to-decade morphology change and sediment budget alteration in the Nobiru Coast. During the past two centuries, the longshore transport on the northeast coast and sediment supply from the Naruse River were the principal sediment supply onto the Nobiru Coast and the estimated annual net sediment input into the coast was 87,000 m3/y. Until several decades ago, the construction of the Ishinomaki Port and the erosion preventing constructions (breakwaters, headlands) along the Ohmagari Coast on the northeast areas caused a dramatic reduction of longshore transport to the Nobiru Coast. Hence, the net sediment input fell to 46,000 m3/y. After the tsunami, the sediment input was further reduced to 29,000 m3/y and this loss was closely related to the intruded sediment into the Naruse River. The outcomes of this study are highly valuable for the government authorities to manage the long-term coastal and riverine morphological changes after the 2011 tsunami.

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