Sediment Character in a Micro-Tidal, Harbor-Estuary Environment, Göteborg, Sweden

Johannesson, L. T.; Stevens, Rodney L.; Alexanderson, J. H.

doi:10.2307/1353332

Cited by 10 publications

(2 citation statements)

References 29 publications

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“…During this period, the silt and clay were transported into the estuarine region while sand was deposited at the freshwater zone of higher energy. It indicates nonlinear sand-mud mixing under complex hydrodynamic condition (Johannesson et al 2000;Venkatramanan et al 2011Venkatramanan et al , 2014c. Thus, the revised textural classification scheme of Flemming classification (2000) was used to identify the hydrodynamic condition of the study area.…”

Section: Grain Size Distribution and Hydrodynamic Conditionmentioning

confidence: 99%

Environmental monitoring and assessment of heavy metals in surface sediments at Coleroon River Estuary in Tamil Nadu, India

Senapathi

Chung

Ramkumar

et al. 2015

Environ Monit Assess

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The combined studies on grain size distribution, organic matter contents of sediments, sequential extraction and bulk concentration of heavy metals, statistical analysis, and ecological risk assessments were carried out to investigate the contamination sources and ecological risks of surface sediments at Coleroon River Estuary in Tamil Nadu, India. The sequential extraction of metals showed that a larger portion of the metals was associated with the residual phase and also in other fractions. The low concentrations of heavy metals were found in exchangeable and carbonate bounds (bioavailable phases). It revealed that sediments of Coleroon River Estuary were relatively unpolluted and were influenced mainly by natural sources. The observed order of bulk concentrations of heavy metals in the sediments was as follows: Fe > Mn > Zn > Cu > Pb > Cr > Ni > Co. Factor analyses represented that the enrichment of heavy metals was mostly resulted from lithogenic origins associated with anthropogenic sources. These sources were reconfirmed by cluster analysis. Risk assessment code (RAC) suggested that all metals were not harmful in monsoon season. However, Fe was in medium risk, and Mn and Cu were in low risk in summer. According to pollution load index (PLI) of sediments, all heavy metals were toxic. Cu might be related with adverse biological effects on the basis of sediment quality guidelines (SQG) in both seasons. These integrated approaches were very useful to identify the contamination sources and ecological risks of sediments in estuarine environment. It is expected that this research can give a useful information for the remediation of heavy metals in sediments.

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Section: Grain Size Distribution and Hydrodynamic Conditionmentioning

confidence: 99%

Environmental monitoring and assessment of heavy metals in surface sediments at Coleroon River Estuary in Tamil Nadu, India

Senapathi

Chung

Ramkumar

et al. 2015

Environ Monit Assess

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“…In the Botlek Harbor, within the Port of Rotterdam, salinity-induced density gradients trapped suspended particulate matter (SPM) near the head of the saline water intrusion, determined the availability of SPM exchange between the tidal river and harbor, and caused high siltation rates in the harbor (Nijs et al 2009). In the Port of Götenborg in Sweden, extensive anthropogenic activities, such as ship traffic and dredging, changed the natural harbor depth and disturbed salinity stratification and patterns of sediment transport (Johannesson et al 2000). The study based on an experiment of a physical model between the Meuse River and a yacht harbor in Roermond City, the Netherlands, showed that siltation could be substantially reduced through designing a sill in the entrance and a permeable pile-groyne upstream of the entrance (Schijndel and Kranenburg 1998).…”

Section: Introductionmentioning

confidence: 99%

Downdrift Port Siltation Adjacent to a River Mouth: Mechanisms and Effects of Littoral Sediment Transport to the Navigation Channel

Romdani

Chen

Chien

et al. 2022

J. Waterway, Port, Coastal, Ocean Eng.

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The mechanisms controlling sediment transport at river mouths and estuaries nearby ports are complicated interactions among waves, tidal currents, and river flows over complex bathymetry. Episodic river discharge triggered by large rainfall may contribute to significant sediment into the ocean. Over the last decade, the exposed riverine sediment from the Zhuoshui River, north of Mailiao Port, is one of the major sources of sediment supply in this region. Previous field observations shortly after the passage of a typhoon suggested fine-grained sediments settled rapidly near the river mouth, and tidal currents and strong wind-driven waves during winter were the mechanisms that transported sediment toward the navigational channel. Numerical simulations provide insights into the patterns of residual circulations for a range of spring-neap tidal forces and wave conditions. Model results show that extending North Jetty could be one of the engineering countermeasures to modify the circulation system between the port and the river mouth to mitigate the siltation problem.

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Low impact leaching agents as remediation media for organotin and metal contaminated sediments

Norén

Fedje

Strömvall

et al. 2021

Journal of Environmental Management

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Sediment Character in a Micro-Tidal, Harbor-Estuary Environment, Göteborg, Sweden

Cited by 10 publications

References 29 publications

Environmental monitoring and assessment of heavy metals in surface sediments at Coleroon River Estuary in Tamil Nadu, India

Environmental monitoring and assessment of heavy metals in surface sediments at Coleroon River Estuary in Tamil Nadu, India

Downdrift Port Siltation Adjacent to a River Mouth: Mechanisms and Effects of Littoral Sediment Transport to the Navigation Channel

Low impact leaching agents as remediation media for organotin and metal contaminated sediments

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