Suspended sediment floc size in the Cam - Nam Trieu estuary (Hai Phong, Vietnam), in wet season

Vu Duy Vinh; Sylvain Ouillon; Minh Hai Nguyen

doi:10.15625/1859-3097/16074

Author affiliations

Authors

Vu Duy Vinh Institute of Marine Environment and Resources, VAST, Vietnam https://orcid.org/0000-0002-4500-027X
Sylvain Ouillon UMR LEGOS, University of Toulouse, IRD, CNES, CNRS, UPS, 14 avenue Edouard Belin, 31400 Toulouse, France; Department Water-Environment-Oceanography, University of Science and Technology of Hanoi (USTH), VAST, Vietnam
Nguyen Minh Hai Institute of Marine Environment and Resources, VAST, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/16074

Keywords:

Suspended sediment floc size, Cam - Nam Trieu estuary, Hai Phong, D50, particle size.

Abstract

Median diameters (D₅₀) of suspended particles were inferred in the wet season in the Cam - Nam Trieu estuary (Hai Phong, Vietnam) based on the particle size distribution measured by LISST-100X on five transects along the river from 23 to 26 September 2015. The results showed that floc diameters varied between 3.6 μm to 146.5 μm and averaged 49.14 μm. At high tide, the average floc size D₅₀ was lowest (42.66 ± 11.55 µm). It reached the highest value in the ebb tide (62.87 ± 23.34 µm) and then decreased to intermediate values in the flood tide (48.75 ± 15.72 µm). The coefficient of variation of the mean floc size D₅₀ was lowest in the high tide (27.05%), highest in ebb tide (37.13%), then intermediate in the flood tide (32.12%).

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