NDLI: Modeling heavy metal concentration distributions in estuarine waters: an application to Suances Estuary (Northern Spain)

Content Provider	Springer Nature Link
Author	Sámano, María Luisa García, Andrés Revilla, José Antonio Álvarez, César
Copyright Year	2014
Abstract	Using numerical modeling as a tool to simplify management tasks is a less expensive complementary method to indirectly monitor estuarine zones. Nevertheless, information regarding the sedimentary dynamics and the pollutants present in the area, specifically in the sediment, must be known before a model can be used successfully. The two-dimensional transport model “SOLTOX” allowed the study of the fate and transport of heavy metals in estuarine waters, with particular application to the zinc evolution along the Suances Estuary (Northern Spain) which, historically, has suffered the effects of industrial pollution. As many pollutants can be adsorbed on suspended solids, advection–diffusion transport analyses were tackled to model not only the zinc but also the suspended solids concentration distributions. The importance of specific parameters related with the suspended solids transport modeling was also explored. Using the collected data during a whole tidal cycle for suspended solids and current velocities, a graphical method was applied to obtain the initial values for the calibration and validation of the model main parameters. The model was first calibrated against the field data for suspended solids. The obtained results exhibited the critical shear stress for deposition as the overriding parameter. The model was then used to investigate the zinc transport processes in the Suances Estuary. A reasonable agreement between modeled and measured data was achieved for the suspended solids and zinc. Moreover, the results demonstrated a dependence on the background concentration of the pollutant in the sediment. However, the background concentration in the water column had little effect on the model results. .
Starting Page	2931
Ending Page	2945
Page Count	15
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	72
Issue Number	8
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-03-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Estuarine systems management Numerical modeling Heavy metals Critical friction velocities Suspended solids Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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