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Erosion and deposition processes from field experiments of hydrodynamics in the coastal mangrove area of Can Gio, Vietnam

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Studying hydrodynamic processes is necessary for understanding the sediment erosion-deposition mechanism in mangrove areas. The hydrodynamic effects within the mangrove area of the Dong Tranh Estuary in the Can Gio Mangrove Biosphere Reserve in Ho Chi Minh City (HCMC), Vietnam are very complicated and are caused by the mixed impacts of waves, tides, currents and suspended sediment concentrations (SSCs). In this study, the measurements of hydrodynamics such as waves, currents and SSCs were conducted in the dry (Feb. 2012) and wet (Jun. 2014) seasons. Three stations were set up within the estuary, mud-flat and mangrove forest. The analysed results showed that the hydrodynamics in all three stations were strongly influenced during the first dry monsoon season and the next wet one. The waves were the main factor during the dry season and contributed more SSC turbulence in the mud-flat, potentially causing erosion at the study site. Meanwhile, the current velocities in both the estuary and mud-flat sites were major factors during the wet season. In the mangrove forest, the SSC during the dry season changed due to the tidal cycle. Additionally, two measurements for the change in the topographies and shorelines were conducted from 2014 to 2017. The results show that the study site has been eroding rapidly (0.61 m month-1). Although this study shows a soil retention role for the mangrove forests, the wave energy dissipation occurs mainly within the mud-flat due to the bottom topography. The study site is proven to be eroding.
Czasopismo
Rocznik
Strony
252--264
Opis fizyczny
Bibliogr. 29 poz., fot., mapa, rys., tab., wykr.
Twórcy
  • Department of Oceanology, Meteorology and Hydrology, University of Science, Vietnam National University, Ho Chi Minh City, Vietnam
  • Department of Oceanology, Meteorology and Hydrology, University of Science, Vietnam National University, Ho Chi Minh City, Vietnam
Bibliografia
  • [1] Bao, T. Q., 2011. Effect of mangrove forest structures on wave attenuation in coastal Vietnam. Oceanologia 53 (3), 807-818, http://dx.doi.org/10.5697/oc.53-3.807.
  • [2] Bay, N. T., Toan, T. T., Phung, N. K., Tri, N. Q., 2012. Numerical investigation on the sediment transport trend of can Gio Coastal Area (Southern Vietnam). J. Mar. Environ. Eng. 9 (3), 191-210.
  • [3] Bryce, S., Larcombe, P., Ridd, P. V., 2003. Hydrodynamic and geomorphological controls on suspended sediment transport in man-grove creek systems, a case of study: Cocoa Creek, Townsville, Australia. Estuar. Coast. Shelf Sci. 56 (3-4), 415-531, http://dx.doi.org/10.1016/S0272-7714(02)00192-0.
  • [4] Cao, H., Chen, Y., Tian, Y., Feng, W., 2016. Field investigation into wave attenuation in the mangrove environment of the South China Sea Coast. J. Coastal Res. 32 (6), 1417-1427, http://dx.doi.org/10.2112/JCOASTRES-D-15-00124.1.
  • [5] Capo, S., Sottolichio, A., Brenon, I., Castaing, P., Ferry, L., 2006. Morphology, hydrography and sediment dynamics in a mangrove estuary: the Konkoure Estuary, Guinea. Mar. Geol. 230 (3-4), 199-215, http://dx.doi.org/10.1016/j.margeo.2006.05.003.
  • [6] FAO, 2015. Global Forest Resources Assessment 2015. Food and Agriculture Organization of the United Nations, 244 pp.
  • [7] Furukawa, K., Wolanski, E., 1996. Sedimentation in mangrove forest. Mang. Salt Marsh. 1 (1), 3-10.
  • [8] Hong, P. N., San, H. T., 1993. Mangroves of Vietnam. IUCN-The World Conservation Union, Bangkok, Thailand, 173 pp.
  • [9] Horstman, E. M., Dohmen-Janssen, C. M., Narra, P. M. F., van den Berg, N. J. F., Siemerink, M., Hulscher, S. J. M. H., 2014. Wave attenuation in mangroves: a quantitative approach to field observations. Coast. Eng. 94, 47-62, http://dx.doi.org/10.1016/j.coasta-leng.2014.08.005.
  • [10] Li, L., Wang, X. H., Andutta, F., Williams, D., 2014. Effects of mangroves and tidal flats on suspended-sediment dynamics: Observation and numerical study of Darwin Harbour, Australia. J. Geophys. Res.-Oceans 119 (9), 5854-5873, http://dx.doi.org/10.1002/2014JC009987.
  • [11] Massel, S. R., Furukawa, K., Brinkman, R. M., 1999. Surface wave propagation in mangrove forests. Fluid Dyn. Res. 24 (4), 219-249, http://dx.doi.org/10.1016/S0169-5983(98)00024-0.
  • [12] Mazda, Y., Magi, M., Kogo, M., Hong, P. N., 1997. Mangroves as a coastal protection from waves in the Tong King Delta, Vietnam. Mang. Salt Marsh. 1 (2), 127-135.
  • [13] Mazda, Y., Magi, M., Nanao, H., Kogo, M., Miyagi, T., Kanazawa, N., Kobashi, D., 2002. Coastal erosion due to long-term human impact on mangrove forests. Wetl. Ecol. Manag. 10 (1), 1-9, http://dx.doi.org/10.1023/A:1014343017416.
  • [14] Mazda, Y., Magi, M., Ikeda, Y., Kurokawa, T., Asano, T., 2006. Wave reduction in a mangrove forest dominated by Sonneratia sp. Wetl. Ecol. Manag. 14 (4), 365-378, http://dx.doi.org/10.1007/s11273-005-5388-0.
  • [15] Mehta, A., Li, Y., 2003. Principles and Process — Modelling of Cohesive Sediment Transport. University of Florida, 86 pp.
  • [16] Norris, B. K., Mullarney, J. C., Bryan, K. R., Henderson, S. M., 2017. The effect of pneumatophore density on turbulence: a field study in a Sonneratia-dominated mangrove forest, Vietnam. Cont. Shelf Res. 147, 114-127, http://dx.doi.org/10.1016/j.csr.2017.06.002.
  • [17] Parvathy, K. G., Bhaskaran, P. K., 2017. Attenuation in presence of mangrove: a sensitivity study for varying bottom slopes. Int. J. Ocean Climate Syst. 8 (3), 126-134, http://dx.doi.org/10.1177/1759313117702919.
  • [18] Phuoc, V. L. H., 2012. Concentration of suspended sediments in mangrove forests (Nang Hai study site, Ho Chi Minh city). Scientific research project of Viet Nam National University — Ho Chi Minh city (in Vietnamese).
  • [19] Saenger, P., 2002. Mangrove Ecology, Silviculture and Conservation. Kluwer Academic Publishers, Netherlands, 360 pp.
  • [20] Schwarzer, K., Thanh, N. C., Ricklefs, K., 2016. Sediment re-deposition in the mangrove environment of Can Gio, Sai Gon River estuary (Vietnam). J. Coastal Res. 75 (Sp. Iss.), 138-142, http://dx.doi.org/10.2112/SI75-028.1.
  • [21] Shepard, C. C., Crain, C. M., Beck, M. W., 2011. The protective role of coastal marshes: a systematic review and Meta-analysis. PLoS ONE 6 (11), e27374, http://dx.doi.org/10.1371/journal.pone.0027374.
  • [22] Tin, H. T., Vinh, B. T., 2013. Exploitation, evaluation of reserve and environmental impact assessment of the sand extraction in Can Gio coastal zone. Kick-off Seminar on ASEAN-Japan Build-up Cooperative Education Program for Global Human Resource Development in Earth Resources Engineering. Bangkok, Thailand.
  • [23] Van Santen, P., Augustinus, P. G. E. F., Janssen-Stelder, B. M., Quartel, S., Tri, N. H., 2007. Sedimentation in an estuarine mangrove system. J. Asian Earth Sci. 29 (4), 566-575, http://dx.doi.org/10.1016/j.jseaes.2006.05.011.
  • [24] Vinh, B. T., Truong, N. H., 2012. Erosion mechanism of Nga Bay River-banks (Ho Chi Minh City, Vietnam). ASEAN Eng. J. C 3 (2), 132-141.
  • [25] Vo Luong, H. P., Toan, N. D., An, D. T., Hanh, T. C., 2008. Computation of wave field in the Dong Tranh estuary, can Gio by using wave refraction model. J. Geol. Ser. B 31-32, 164-170.
  • [26] Vo Quoc, T., Kuenzer, C., 2012. Can Gio Mangrove Biosphere Reserve Evaluation 2012: Current Status, Dynamics and Ecosystem Services. IUCN, Ha Noi, Vietnam, 100 pp.
  • [27] Vo-Luong, H. P., Massel, S. R., 2006. Experiment on wave motion and suspended sediment concentration at Nang Hai, Can Gio mangrove forest, Southern Viet Nam. Oceanologia 48 (1), 23-40.
  • [28] Vo-Luong, H. P., Massel, S. R., 2008. Energy dissipation in non-uniform mangrove forests of arbitrary depth. J. Mar. Syst. 74 (1-2), 603-622, http://dx.doi.org/10.1016/j.jmarsys.2008.05.004.
  • [29] Wolanski, E., 1995. Transport of Sediment in mangrove swamps. Hydrobiologia 295 (1-3), 31-42.
Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-5e54818f-c549-48d5-9dff-4226738c74e7
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