TY - JOUR
T1 - Impact of gate operating modes of sea dikes on hydrodynamic regime and inundated area in Can Gio Bay
AU - Thi Hoai Thu, Vu
AU - Tabata, Toshinori
AU - Hiramatsu, Kazuaki
AU - Anh Ngoc, Trieu
AU - Harada, Masayoshi
N1 - Funding Information:
The authors appreciate the funding support of JSPS KAKENHI Grant Number 23380144, 17K15347 and 18H03968 and the data supplied by the Ocean Institute, National Information Center in Vietnam.
Funding Information:
The authors appreciate the funding support of JSPS KAKENHI Grant Number 23380144, 17K15347 and 18H03968.
Publisher Copyright:
© 2019 Japan Society of Civil Engineers.
PY - 2019/4/3
Y1 - 2019/4/3
N2 - Ho Chi Minh City gets severely inundated by upstream flooding and a combination of rising spring tides and rain, owing to the combined impacts of rapid urbanization and sea level changes. A sea dike to close Can Gio Bay has been proposed to regulate storage and control water levels in the drainage and sewer system of Ho Chi Minh City. However, this proposed sea dike and different gate operating modes could significantly change the hydrodynamic regime in Can Gio Bay. In this study, a two-dimensional hydrodynamic model was developed to assess changes in the hydrodynamic regime after construction of the sea dike, including fluctuations in the inundated areas in Can Gio Bay mangrove forests. The results show that sea dike construction is an effective solution for controlling water levels and reducing inundation, especially considering a sea level rise scenario in the year 2050. Further, the gate operation mode also affects the effectiveness of inundation reduction, which is approximately 10% better than the same sea dike type without gate operation. However, the sea dike was less effective in a sea water level rise scenario in 2100 for all scenarios.
AB - Ho Chi Minh City gets severely inundated by upstream flooding and a combination of rising spring tides and rain, owing to the combined impacts of rapid urbanization and sea level changes. A sea dike to close Can Gio Bay has been proposed to regulate storage and control water levels in the drainage and sewer system of Ho Chi Minh City. However, this proposed sea dike and different gate operating modes could significantly change the hydrodynamic regime in Can Gio Bay. In this study, a two-dimensional hydrodynamic model was developed to assess changes in the hydrodynamic regime after construction of the sea dike, including fluctuations in the inundated areas in Can Gio Bay mangrove forests. The results show that sea dike construction is an effective solution for controlling water levels and reducing inundation, especially considering a sea level rise scenario in the year 2050. Further, the gate operation mode also affects the effectiveness of inundation reduction, which is approximately 10% better than the same sea dike type without gate operation. However, the sea dike was less effective in a sea water level rise scenario in 2100 for all scenarios.
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U2 - 10.1080/21664250.2019.1579460
DO - 10.1080/21664250.2019.1579460
M3 - Article
AN - SCOPUS:85065529077
SN - 2166-4250
VL - 61
SP - 171
EP - 186
JO - Coastal Engineering Journal
JF - Coastal Engineering Journal
IS - 2
ER -
