Assessing Impacts of Sea Level Rise and Sea Dike Construction on Salinity Regime in Can Gio Bay, South Vietnam
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 146, Issue 6
Abstract
To protect Ho Chi Minh City (HCMC) from submergence due to the ongoing rapid sea level rise (SLR), the Vietnamese government have proposed the construction of a sea dike in Can Gio Bay. Can Gio Bay will be closed to regulate the storage and to control water levels in the drainage and sewer systems of HCMC. This could significantly impact the salinity distribution in the Bay and affect its mangrove forest. In this study, a set of scenarios will be analyzed using two-dimensional hydrodynamic and convective-dispersive models to assess the effects of SLR and the construction of a sea dike on salinity distribution in the Bay. The results reveal that the salinity in most areas of the Bay tended to increase positively with the SLR. The sea dikes significantly reduced seawater intrusion into half of the upstream area of the Bay. Considering the influence of SLR and the construction of a sea dike, the sea dike could result in the reduction of salinity. Furthermore, if the sea dike was operated for a long time, half of the Bay area would become freshwater, which would lead to adverse effects on the mangrove forest.
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Acknowledgments
This work was supported by JSPS KAKENHI under Grant Number JP17K15347 and JP18H03968.
References
Aertsl, J. C. J. H., A. Hassan, H. H. G. Savenije, and M. F. Khan. 2000. “Using GIS tools and rapid assessment techniques for determining salt intrusion: STREAM a river basin management instrument”. Phys. Chem. Earth (B) 25 (3): 265–273. https://doi.org/10.1016/S1464-1909(00)00014-9.
Ball, M. C. 1988. “Salinity tolerance in the mangroves, Aegiceras corniculatum and Avicennia marina. I. Water use in relation to growth, carbon partitioning and salt balance.” Aust. J. Plant Physiol. 15 (3): 447–464. https://doi.org/10.1071/PP9880447.
Ball, M. C. 2002. “Interactive effects of salinity and irradiance on growth: Implications for mangrove forest structure along salinity gradients.” Trees 16 (2–3): 126–139. https://doi.org/10.1007/s00468-002-0169-3.
Batu, V. 1993. “A generalized two-dimensional analytical solute transport model in bounded media for flux-type finite multiple sources.” Water Resour. Res. 29 (8): 2881–2892. https://doi.org/10.1029/93WR00977.
Bellos, V., and G. Tsakiris. 2015. “Comparing various methods of building representation for 2D flood modelling in built-up areas.” Water Resour. Manage. 29 (2): 379–397. https://doi.org/10.1007/s11269-014-0702-3.
Binh, T. T. H., P. V. Hoa, L. K. Thoa, and N. V. Luong. 2008. “Using multi-temporal remote sensing data to manage the mangrove for coastal environmental protection.” In Vol. 37 of Proc., Int. Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, 709–712. https://www.isprs.org/proceedings/XXXVII/congress/8_pdf/6_WG-VIII-6/12.pdf.
Brockway, R., D. Bowers, A. Hoguane, V. Dove, and V. Vassele. 2006. “A note on salt intrusion in funnel-shaped estuaries: Application to the Incomati estuary, Mozambique.” Estuarine Coastal Shelf Sci. 66 (1–2): 1–5. https://doi.org/10.1016/j.ecss.2005.07.014.
Chen, C., H. Liu, and R. Beardsley. 2003. “An unstructured grid, finite-volume, three-dimensional, primitive equations ocean model: Application to coastal ocean and estuaries.” J. Atmos. Oceanic Technol. 20 (1): 159–186. https://doi.org/10.1175/1520-0426(2003)020%3C0159:AUGFVT%26gt;2.0.CO;2.
Clough, B. F. 1984. “Growth and salt balance of the mangroves, Avicennia marine (Forsk.) Vierh. and Rhizophora stylosa Griff. In relation to salinity.” Funct. Plant Biol. 11 (5): 419–430. https://doi.org/10.1071/PP9840419.
Dutta, D., J. Alam, K. Umeda, M. Hayashi, and S. Hironaka. 2007. “A two-dimensional hydrodynamic model for flood inundation simulation: A case study in the Lower Mekong river basin.” Hydrol. Processes 21 (9): 1223–1237. https://doi.org/10.1002/hyp.6682.
Flowers, T. J., and A. R. Yeo. 1986. “Ion relations of plants under drought and salinity.” Aust. J. Plant Physiol. 13 (1): 75–91. https://doi.org/10.1071/PP9860075.
Hawkins, S., et al. 2010. Roots in the water: Legal frameworks for mangrove PES in Vietnam. Katoomba Group’s Legal Initiative Country Study Series. Washington, DC: Forest Trends.
Hiramatsu, K., S. Shikasho, and K. Mori. 2005. “Numerical prediction of suspended sediment concentrations in the Ariake Sea, Japan, using a time-dependent sediment resuspension and deposition model.” Paddy Water Environ. 3 (1): 13–19. https://doi.org/10.1007/s10333-004-0057-0.
Hoang, T. B., and N. D. Khang. 2015. “Impacts of the Vung Tau—Go Cong sea dike on sedimentation in a coastal area of Can Gio Bay.” [In Vietnamese.] J. Sci. Technol. Water Resour. 25: 1–13.
Hu, B. S., and S. C. Kot. 1997. “Numerical model of tides in Pearl River estuary with moving boundary.” J. Hydraul. Eng. 123 (1): 21–29. https://doi.org/10.1061/(ASCE)0733-9429(1997)123:1(21).
IPCC (Intergovernmental Panel on Climate Change). 2007. Climate change 2007: Synthesis report. contribution of working groups I, II and III to the fourth assessment report of the intergovernmental panel on climate change. Geneva: IPCC.
IPCC (Intergovernmental Panel on Climate Change). 2012. Managing the risks of extreme events and disasters to advance climate change adaptation. special report of working groups I and II of the intergovernmental panel on climate change. Cambridge, UK: Cambridge University Press.
IPCC (Intergovernmental Panel on Climate Change). 2013. Climate change 2013: The physical science basis. contribution of working group I to the fifth assessment report of the intergovernmental panel on climate change. Cambridge, UK: Cambridge University Press.
Kim, T., Y. P. Sheng, and K. Park. 2010. “Modeling water quality and hypoxia dynamics in Upper Charlotte Harbor, Florida, U.S.A. during 2000.” Estuarine Coastal Shelf Sci. 90 (4): 250–263. https://doi.org/10.1016/j.ecss.2010.09.006.
Kuenzer, C., and V. Q. Tuan. 2013. “Assessing the ecosystem services value of Can Gio mangrove biosphere reserve: Combining earth-observation- and household-survey-based analyses.” Appl. Geogr. 45: 167–184. https://doi.org/10.1016/j.apgeog.2013.08.012.
Liu, W. C., M. H. Hsu, and A. Y. Kuo. 2001. “Investigation of long-term transport in Tanshui River Estuary, Taiwan.” J. Waterway, Port, Coastal, Ocean Eng. 127 (2): 61–71. https://doi.org/10.1061/(ASCE)0733-950X(2001)127:2(61).
Luong, N. V. 2011. “Mangrove forest structure and coverage change analysis using remote sensing and geographical information system technology, a case study of Can Gio Mangrove Biosphere Reserve, Ho Chi Minh City, Vietnam.” Accessed June 14, 2019. https://www.rufford.org/files/48.12.09%20Detailed%20Final%20Report.pdf.
MONRE (Ministry of Natural Resources and Environment). 2016. Climate change, sea level rise scenarios for Viet Nam. Hanoi, Vietnam: MONRE.
Ngoc, T. A. 2017. “Assessing the effects of upstream dam developments on sediment distribution in the Lower Mekong Delta, Vietnam.” J. Water Resour. Prot. 9 (7): 822–840. https://doi.org/10.4236/jwarp.2017.97055.
Ngoc, T. A., V. T. H. Thu, D. T. Khoa, and N. D. Tinh. 2013. “A systematic approach to building urban resilience to climate change in Ho Chi Minh City.” In Proc., JSPS Core-to-Core Program SOWAC Project, 2013 3rd Joint Seminar Between Water Resources Univ., Vietnam and Kyushu Univ., 202–211.
Nguyen, A. D., and H. H. G. Savenije. 2006. “Salt intrusion in multi-channel estuaries: A case study in the Mekong Delta, Vietnam.” Hydrol. Earth Syst. Sc. 10: 743–754. https://doi.org/10.5194/hess-10-743-2006.
Nguyen, A. D., H. H. G. Savenije, D. N. Pham, and D. T. Tang. 2008. “Using salt intrusion measurements to determine the freshwater discharge distribution over the branches of a multi-channel estuary: The Mekong Delta case.” Estuarine Coastal Shelf Sci. 77 (3): 433–445. https://doi.org/10.1016/j.ecss.2007.10.010.
Nguyen, N. Q., L. X. Bao, L. T. Thanh, and T. A. Ngoc. 2015. “Flood control measures in the Lower Dong Nai—Sai Gon River Basin.” In Proc., Annual Conf. on Water Resources, Thuyloi Univ, 202–211. http://www2.bpes.kyushu-u.ac.jp/~www-water/sowac/index-e.html.
Nguyen, Q. K. 2014. Report in Study on integrated measures for flood control in the downstream area of Dong Nai Basin and vicinity areas, 2011–2014. [In Vietnamese.]
Nicholls, R. J., S. Hanson, C. Herweijer, N. Patmore, S. Hallegatte, J. Corfee-Morlot, J. Chateau, and R. Muir-Wood. 2008. Ranking port cities with high exposure and vulnerability to climate extremes: Exposure estimates. OECD Environment Working Papers 1. Paris: OECD Publishing.
Reza, M., P. M. Orton, N. Georgas, and A. F. Blumberg. 2016. “Three-dimensional hydrodynamic modeling of coastal flood mitigation by wetlands.” Coastal Eng. 111: 83–94. https://doi.org/10.1016/j.coastaleng.2016.01.012.
Savenije, H. H. G. 1986. “A one-dimensional model for salinity intrusion in alluvial estuaries.” J. Hydrol. 85 (1–2): 87–109. https://doi.org/10.1016/0022-1694(86)90078-8.
Savenije, H. H. G. 1989. “Salt intrusion model for high-water slack, low-water slack and mean tide on spread sheet.” J. Hydrol. 107 (1–4): 9–18. https://doi.org/10.1016/0022-1694(89)90046-2.
Savenije, H. H. G. 1993. “Predictive model for salt intrusion in estuaries.” J. Hydrol. 148 (1–4): 203–218. https://doi.org/10.1016/0022-1694(93)90260-G.
Savenije, H. H. G. 2005. Salinity and tides in alluvial estuaries. Amsterdam, Netherlands: Elsevier.
Smagorinsky, J. 1963. “General circulation experiments with the primitive equations: I. The basic experiment.” Mon. Wea. Rev. 91 (3): 99–164. https://doi.org/10.1175/1520-0493(1963)091%3C0099:GCEWTP%26gt;2.3.CO;2.
Stevenson, P., S. Ata, and G. M. Evans. 2007. “Convective-dispersive gangue transport in flotation froth.” Chem. Eng. Sci. 62 (21): 5736–5744. https://doi.org/10.1016/j.ces.2007.05.038.
Tabata, T., K. Hiramatsu, M. Harada, and M. Hirose. 2013. “Numerical analysis of convective dispersion of pen shell Atrina pectinata larvae to support seabed restoration and resource recovery in the Ariake Sea, Japan.” Ecol. Eng. 57: 154–161. https://doi.org/10.1016/j.ecoleng.2013.04.018.
Thoi, H. V. 2010. Research relationships between characteristics of the distribution of mangrove plants and soil salinity, the frequency at coastal tide flooded river. [In Vietnamese.] Hanoi, Vietnam: Vietnamese Academy of Forest Sciences.
Thu, V. T. H., T. Tabata, K. Hiramatsu, T. A. Ngoc, and M. Harada. 2018a. “Effects of sea level rise and sea dike construction on the downstream end of the Saigon River Basin (Can Gio Bay).” Jpn. Agric. Res. Q. 52 (3): 229–239. https://doi.org/10.6090/jarq.52.229.
Thu, V. T. H., T. Tabata, K. Hiramatsu, T. A. Ngoc, and M. Harada. 2018b. “Assessment of spatial—temporal distribution of observed salinity based on location and water depth in Can Gio Area, Southern Vietnam.” J. Faculty Agric. Kyushu Univ. 63 (2): 379–385.
Thu, V. T. H., T. Tabata, K. Hiramatsu, T. A. Ngoc, and M. Harada. 2019a. “Impact of gate operating modes of sea dikes on hydrodynamic regime and inundated area in Can Gio Bay.” Coastal Eng. J. 61 (2): 171–186. https://doi.org/10.1080/21664250.2019.1579460.
Thu, V. T. H., T. Tabata, K. Hiramatsu, T. A. Ngoc, and M. Harada. 2019b. “Evaluation of influence of river inflow discharge and tidal level to spatial-temporal distribution of salinity in Can Gio Area, South of Vietnam by two series of field observations.” J. Faculty Agric. Kyushu Univ. 64 (2): 345–353.
Uchiyama, Y. 2004. “Modeling wetting and drying scheme based on an extended logarithmic law for a three-dimensional sigma-coordinate coastal ocean model.” Rep. Port Airport Res. Inst. 43 (4): 3–21.
Zhang, E., H. H. G. Savenije, H. Wu, Y. Kong, and J. Zhu. 2011. “Analytical solution for salt intrusion in the Yangtze Estuary, China.” Estuarine Coastal Shelf Sci. 91 (4): 492–501. https://doi.org/10.1016/j.ecss.2010.11.008.
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Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 146 • Issue 6 • November 2020
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© 2020 American Society of Civil Engineers.
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Received: Aug 20, 2019
Accepted: Jun 15, 2020
Published online: Sep 10, 2020
Published in print: Nov 1, 2020
Discussion open until: Feb 10, 2021
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