Nguyen Ngoc Tien, Dinh Van Uu, Nguyen Tho Sao, Do Huy Cuong, Nguyen Trung Thanh, Vu Hai Dang, Do Ngoc Thuc
Author affiliations


  • Nguyen Ngoc Tien Institute for Marine Geology and Geophysics, VAST
  • Dinh Van Uu VNU University of Science
  • Nguyen Tho Sao VNU University of Science
  • Do Huy Cuong Institute for Marine Geology and Geophysics, VAST
  • Nguyen Trung Thanh Institute for Marine Geology and Geophysics, VAST
  • Vu Hai Dang Institute for Marine Geology and Geophysics, VAST
  • Do Ngoc Thuc Institute for Marine Geology and Geophysics, VAST



Suspended sediment, salinity, sediment dynamics, Hau river.


During the dry season (April 2014 and March 2015), the program of cooperation in science and technology between Vietnam and the United States and the independent project VAST-DLT.06/15-16 have conducted two surveys aiming to investigate deposition and sptial and temporal distribution of suspended sediment concentration under the domination by hydrodynamic processes such as wave, current, river flow. In addition, we also investigated the effect of tidal current in relationship with concentration of suspended sediment. Three 12-hour continuous monitoring stations of suspended sediment factors, water level and current are located on the topset at a depth of 8 m, the foreset at a depth of 15 m and the bottomset at a depth of 25 m, with a distance between the two stations about 3 km. In which, the concentrations of suspended sediment (SSCs) in the range of particle sizes from 1.25 μm to 250 μm and particle diameter are measured by LISST-25x (Suspended Sediment Sensor), water level, velocity and current direction are measured by the ADCP. Results of data analysis show that the distributions of particle diameter of suspended sediment over time on the topset, the foreset and the bottomset are different and do not change much under tidal phases. Meanwhile, the concentrations of suspended sediment (SSCs) correlate with velocity and fluctuate under tidal phases. Suspended sediment is deposited at tidal transition and reactivates when current velocities increase in flood and ebb tide phases. The survey data show that the increase of current velocity during flood tide phase causes re-suspension of bottom sediments and increases the concentration of suspended sediment. At flood tide phase corresponding to strong velocity, suspended sediment moves faster and vice versa at ebb tide phase, smaller current velocity makes the movement speed of suspended sediment slow.


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Unverricht, D., Szczuciński, W., Stattegger, K., Jagodziński, R., Le, X. T., and Kwong, L. L. W., 2013. Modern sedimentation and morphology of the subaqueous Mekong Delta, Southern Vietnam. Global and Planetary Change, 110, 223-235. DOI:

Nguyễn Trung Thành, Nguyễn Hồng Lân, Phùng Văn Phách, Dư Văn Toán, Bùi Việt Dũng, Daniel Unverricht, Karl Stattegger, 2011. Xu hướng vận chuyển tích tụ trầm tích trên phần châu thổ ngầm ven bờ biển đồng bằng sông Mê Kông. Tạp chí các Khoa học về Trái đất, 33(4), 607-615.

Milliman, J. D., and Syvitski, J. P., 1992. Geomorphic/tectonic control of sediment discharge to the ocean: the importance of small mountainous rivers. The Journal of Geology, 100(5), 525-544. DOI:

Wang, J. J., Lu, X. X., and Kummu, M., 2011. Sediment load estimates and variations in the Lower Mekong River. River Research and Applications, 27(1), 33-46. DOI:

Liu, J. P., Xue, Z., Ross, K., Wang, H. J., Yang, Z. S., Li, A. C., and Gao, S., 2009. Fate of sediments delivered to the sea by Asian large rivers: long-distance transport and formation of remote alongshore clinothems. The Sedimentary Record, 7(4), 4-9. DOI:

Xue, Z., He, R., Liu, J. P., and Warner, J. C., 2012. Modeling transport and deposition of the Mekong River sediment. Continental Shelf Research, 37, 66-78. DOI:

Nguyễn Ngọc Tiến, Nguyễn Trung Thành, Vũ Hải Đăng, 2016. Một số kết quả bước đầu về động lực trầm tích lơ lửng trong mùa lũ tại vùng biển ven bờ cửa sông Hậu. Tạp chí Khoa học và Công nghệ biển, 16(2),122-128. DOI:

Unverricht, D., Nguyen, T. C., Heinrich, C., Szczuciński, W., Lahajnar, N., and Stattegger, K., 2014. Suspended sediment dynamics during the inter-monsoon season in the subaqueous Mekong Delta and adjacent shelf, southern Vietnam. Journal of Asian Earth Sciences, 79, 509-519. DOI:

Hein, H., Hein, B., and Pohlmann, T., 2013. Recent sediment dynamics in the region of Mekong water influence. Global and Planetary Change, 110, 183-194. DOI:

Wolanski, E., Huan, N. N., Nhan, N. H., and Thuy, N. N., 1996. Fine-sediment dynamics in the Mekong River estuary, Vietnam. Estuarine, Coastal and Shelf Science, 43(5), 565-582. DOI:

Loisel, H., Mangin, A., Vantrepotte, V., Dessailly, D., Dinh, D. N., Garnesson, P., Ouillon, S., Lefebvre, J-P., Mériaux, X., and Phan, T. M., 2014. Variability of suspended particulate matter concentration in coastal waters under the Mekong’s influence from ocean color (MERIS) remote sensing over the last decade. Remote Sensing of Environment, 150, 218-230. DOI:

Wang, Z., Saito, Y., Hori, K., Kitamura, A., and Chen, Z., 2005. Yangtze offshore, China: highly laminated sediments from the transition zone between subaqueous delta and the continental shelf. Estuarine, Coastal and Shelf Science, 62(1), 161-168. DOI:




How to Cite

Tien, N. N., Uu, D. V., Sao, N. T., Cuong, D. H., Thanh, N. T., Dang, V. H., & Thuc, D. N. (2017). THE INITIAL RESULTS OF THE SUSPENDED SEDIMENT DYNAMICS DURING THE DRY SEASON IN THE HAU RIVER MOUTH AREA. Vietnam Journal of Marine Science and Technology, 17(2), 139–148.




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