Using ADV for suspended sediment concentration and settling velocity measurements in large shallow lakes

Gao, Xiaomeng; Li, Yiping; Tang, Chunyan; Acharya, Kumud; Du, Wei; Wang, Jianwei; Luo, Lei; Li, Huiyun; Dai, Shujun; Yu, Zhigang; Jalil, Abdul; Yu, Wenfei; Zhang, Shuangshuang; Bofah-Buoh, Robert; Jepkirui, Mercy; Lu, Xuchuan; Pan, Baozhu

doi:10.1007/s11356-016-8006-1

Cited by 14 publications

(5 citation statements)

References 31 publications

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“…Equation ( 10) suits a wide concentration range, while Equation ( 9) is employed at lower concentrations. Gao [38] suggests that Equation ( 10) is preferable as it provides a concentration-based settling velocity across diverse conditions, yielding more precise results compared to the average settling velocity. It allows for variable settling velocities corresponding to varying sediment concentration conditions, exhibiting a robust correlation coefficient.…”

Section: Adv Methodsmentioning

confidence: 99%

Summary of Experiments and Influencing Factors of Sediment Settling Velocity in Still Water

Li,

Xu,

Zhan

et al. 2024

Water

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Sediment deposition significantly impacts soil erosion processes, consequently influencing the geographical morphology and surrounding environments of reservoirs and estuaries. Given the intricate nature of sediment deposition, it is imperative to consolidate and analyze existing research findings. Presently, studies on sediment settling velocity primarily employ theoretical, laboratory, and field experimentation methods. Theoretical approaches, rooted in mechanics, examine the various forces acting on sediment particles in water to derive settling velocity equations. However, they often overlook external factors like temperature, salinity, organic matter, and pH. Although laboratory experiments scrutinize the influence of these external factors on sedimentation velocity, sediment settling is not solely influenced by individual factors but rather by their collective interplay. Field observations offer the most accurate depiction of sediment deposition rates. However, the equipment used in such experiments may disrupt the natural sedimentation process and damage flocs. Moreover, measurements of sediment particle size from different instruments yield varied results. Additionally, this paper synthesizes the impact of suspended sediment concentration, particle size, shape, temperature, salinity, and organic matter on sediment settling velocity. Future research should focus on innovating new laboratory observation methods for sediment settling velocity and utilizing advanced scientific and technological tools for on-site measurements to provide valuable insights for further investigation into sediment settling velocity.

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Section: Adv Methodsmentioning

confidence: 99%

Summary of Experiments and Influencing Factors of Sediment Settling Velocity in Still Water

Li,

Xu,

Zhan

et al. 2024

Water

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“…The Meiliang bay of large shallow Lake Taihu was selected to study the long-term impacts of wind field on internal processes. Meiliang bay is a highly eutrophic bay of Lake Taihu with high internal nutrients resuspension and presence of algae (Gao et al, 2017;Liu et al, 2014;Zhu et al, 2013). Meiliang Bay is a semi-enclosed bay having a surface area of 129.3 km 2 , 1.9 m average depth and is located northern part of Lake Taihu (Gao et al, 2017;Huang, 2004).…”

Section: Study Regionmentioning

confidence: 99%

“…Meiliang bay is a highly eutrophic bay of Lake Taihu with high internal nutrients resuspension and presence of algae (Gao et al, 2017;Liu et al, 2014;Zhu et al, 2013). Meiliang Bay is a semi-enclosed bay having a surface area of 129.3 km 2 , 1.9 m average depth and is located northern part of Lake Taihu (Gao et al, 2017;Huang, 2004). Annual average wind speed ranges from 3.5 m/s to 5.0 m/s at Meiliang Bay of Lake Taihu (Wu et al, 2013).…”

Section: Study Regionmentioning

confidence: 99%

Long-term wind induced internal response mechanisms at Meiliang Bay of large, shallow Lake Taihu

Jalil

Zhang

et al. 2020

Ann. Limnol. - Int. J. Lim.

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The internal response of shallow lakes to external factors is very important to investigate for understanding their role in long-term changes of the shallow lake ecosystem. The current study investigated the impacts of long-term wind dynamics on in-lake processes of the degraded shallow lake. The long-term high-frequency wind field, water quality, and Chlorophyll-a data analysis showed that there were two groups of variables found with higher internal similarity at Meiliang bay of large, shallow Lake Taihu. The temporal trends of wind, temperature, and Chl-a found highly consistent while dissolved oxygen (DO), total nitrogen (TN), total phosphorus (TP), suspended solids (SS) and Secchi depth were not significantly correlated in long-term temporal trends analysis. The results showed that Chl-a and other shallow lake ecosystem variables (abiotic) are strongly related to long-term wind field. The changes in nutrients and lower mixing scenarios trigger the growth of Chl-a and onshore lower winds help in the formation of colonies. There was a shift in wind and internal response variables before and after 2006. Wind and internal water quality parameters were highly variable before 2006 whereas, decline in wind speeds along with stable wind directional switching caused intense blooms formation along with thermal stratification (warming) for a longer period of time (after 2006) in the shoreline areas. The current study can help to understand the internal ecosystem response mechanisms in long-term interactions with wind field to control the eutrophication and algal blooms.

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“…Field observations were recorded in Meiliang Bay, which is located at (31°25′7.41″N, 120°12′46.90″E; Figure 1) in three periods (April, 2014;May, 2016, andJuly, 2018) in the summer seasons with different hydrodynamic conditions. Meiliang Bay is a semi-enclosed bay with a surface area of 129.3 km 2 , 1.9 m average depth and is located northern part of Lake Taihu (Liu et al, 2014;Gao et al 2017;Li et al 2017b). It is extremely eutrophic, as indicated by cyanobacteria blooms during summer leading to severe water quality problems (Gao et al, 2017;Li et al, 2017b).…”

Section: Description Of Study Sitementioning

confidence: 99%

“…Meiliang Bay is a semi-enclosed bay with a surface area of 129.3 km 2 , 1.9 m average depth and is located northern part of Lake Taihu (Liu et al, 2014;Gao et al 2017;Li et al 2017b). It is extremely eutrophic, as indicated by cyanobacteria blooms during summer leading to severe water quality problems (Gao et al, 2017;Li et al, 2017b). Meiliang Bay has average annual wind speed 4.5 m/s , with dominant summer wind from the southeast and dominant winter wind from the northwest (Wu et al, 2013;Gao et al, 2017;Li et al, 2017b).…”

Section: Description Of Study Sitementioning

confidence: 99%

Contribution of spring and summer hydrodynamic conditions in the eutrophication process at Lake Taihu, China

Asmaa¹,

Li²,

Jin³

et al. 2020

J. Ecol. Nat. Environ.

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Contribution of different hydrodynamic conditions caused nutrients released and algal blooms growth and deteriorates water quality. Important factors related to climate variation, such as water temperature, precipitation, wind, solar radiation, and human activities can influence trophic conditions in the water column. A field survey was conducted at Meiliang Bay during spring and summer seasons and in diverse hydrodynamic conditions. The study aimed to investigate the variation of wave shear stress generated by strong wind and vessels. The measurement results showed that the shear stress increased in direction with increasing wind speed and significant wave heights. Wave shear stress τ has a maximum value = 0.2 Nm 2 during weak wind 1.5-2.5 m/s and significant wave height = 0.20 m while, it has a maximum value = 0.8 Nm 2 with strong wind range from 4.5 to 10 m/s corresponding with the significant wave height which has maximum value = 0.65 m in 2014. Also, wave shear stress τ has maximum value = 0.25 Nm 2 with maximum significant wave height = 0.6 m during passages vessels in 2016. It ranges from-0.8 to 0.8 Nm 2 with maximum wave amplitude value U = 0.4 m/s passages heavy ship in 2018. The results indicated that the bottom layer has a major impact, with strong winds and vessels' induced waves. Furthermore, the shear stress generated by those forces impacted directly on the boundary of the lake and caused sediment resuspension leading to release nitrogen. The outcomes of this paper give a clear idea about the processes happening in the lake.

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Using ADV for suspended sediment concentration and settling velocity measurements in large shallow lakes

Cited by 14 publications

References 31 publications

Summary of Experiments and Influencing Factors of Sediment Settling Velocity in Still Water

Summary of Experiments and Influencing Factors of Sediment Settling Velocity in Still Water

Long-term wind induced internal response mechanisms at Meiliang Bay of large, shallow Lake Taihu

Contribution of spring and summer hydrodynamic conditions in the eutrophication process at Lake Taihu, China

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