Modelling of mercury transport and transformations in the water compartment of the Mediterranean Sea

Žagar, Dušan; Petkovšek, Gregor; Rajar, Rudi; Sirnik, Nataša; Horvat, Milena; Voudouri, A.; Kallos, George; Četina, Matjaž

doi:10.1016/j.marchem.2007.02.007

Cited by 34 publications

(16 citation statements)

References 42 publications

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“…The model was used for computation of circulation, transport of dissolved and particulate pollutants, and basic mercury transformations in the northern Adriatic Sea, the entire Mediterranean and Minamata Bay (Četina, 1992;Rajar & Četina, 1997;Četina et al, 2000;Rajar et al, 2000;Rajar et al, 2004;Kovšca, 2007;Žagar et al, 2007). Simulations of sediment re-suspension, transport and deposition were also carried out using the model (Žagar, 1999;Rajar et al, 2000).…”

Section: The Pcflow3d Modelmentioning

confidence: 99%

“…It consists of hydrodynamic, transport-dispersion, sediment-transport and biogeochemical modules and can be used for simulations of circulation, transport and dispersion of dissolved and particle bound pollutants, and mercury transformation simulations in an aquatic environment. A detailed description of the structure and functionality of the PCFLOW3D model is given in the literature (Rajar & Četina, 1997;Četina et al, 2000;Žagar et al, 2007). In the present study we adopted the Smagorinsky turbulence models in both horizontal and vertical directions, as described in Kovšca (2007).…”

Section: The Pcflow3d Modelmentioning

confidence: 99%

“…Previous numerical modelling of particle bound pollutants in the area was limited to mercury pollution caused by the Soča/Isonzo River inflow Žagar et al, 1999) and mostly performed in relatively coarse resolution within the modelling studies of the Gulf of Trieste . Data from recent measurements (Soczka Mandac et al, 2014;Soczka Mandac & Faganeli, 2015) should, however, represent a satisfactory and representative source for calibration and evaluation of the model PCFLOW3D, which has been used in several previous modelling studies within the Mediterranean Sea (Rajar et al, 2004b;Žagar et al, 2007 and the references therein). Such a procedure is fundamental for development of adequate modelling tools that can be used for simulation of episodic events (e.g., high river discharges).…”

Section: Introductionmentioning

confidence: 99%

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Spatial distribution of suspended solids during short-term high river discharge in the Bay of Koper, northern Adriatic Sea

Mandac

Žagar

2018

Medit. Mar. Sci.

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The Bay of Koper (BoK) located in the Gulf of Trieste (northern Adriatic Sea) is subject to a variety of anthropogenic influences; pollutants from inland are transported to the sea by the local rivers. The impact of high river discharge on suspended solids distribution was assessed by analysing results of an extensive measurement campaign conducted during two episodes of river flooding. The spatial analysis demonstrated the area influenced by fresh water and the distribution of inorganic suspended solids (ISS). The results were then used to calibrate the PCFLOW3D model and to simulate two episodes. A correlation was identified between the measurements and short-term simulations found in the central part of the bay. The results confirm the methods and the model used in this study to be appropriate for studying complex suspended solids processes in coastal areas.

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Section: The Pcflow3d Modelmentioning

confidence: 99%

Section: The Pcflow3d Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatial distribution of suspended solids during short-term high river discharge in the Bay of Koper, northern Adriatic Sea

Mandac

Žagar

2018

Medit. Mar. Sci.

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“…The disposed compound was methylmercury (MeHg) compound generated in the factory process which mostly deposited in seabed as sediment 2) . This MeHg compound can accumulate in fish or other sea creatures and in the end, in human due to consumption of them.…”

Section: Introductionmentioning

confidence: 99%

“…The project was carried out in over around 2.1 km 2 bay area. Suction-dredging of about 1.5 million ton bottom sediments which were contaminated by high total mercury with more than 25 ppm (dry weight) and reclamation in 0.58 km 2 enclosed bay area by deposition of the sediments were conducted 1) . The maximum concentration of total Hg in the sediments around Minamata Bay has been reduced significantly from 2,700 ppm before dredging to 8.85 ppm after dredging 5) .…”

Section: Introductionmentioning

confidence: 99%

Impact of Reclamation Project on Mercury-Contaminated Sediment Transport from Minamata Bay into the Yatsushiro Sea

Fathya

Yano²,

Matsuyama

et al. 2016

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal E

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Minamata Bay which suffered from a major disaster called "Minamata Disease" has already remediated from 1977 to 1990 by carried out highly mercury (Hg) contaminated sediment and reclaimed it in the bay area. Furthermore, many studies reported that the mercury has reached Yatsushiro Sea, the outer part of Minamata Bay. It can be assumed that the sediment transport still occurs from remaining Hg concentration even after the remediation project. In order to investigate it, we try to simulate the transport of sediment contaminated by Hg from Minamata Bay to the Yatsushiro Sea with different coastal morphology on before and after the reclamation projects.Sediment transport and tidal flow with rectangular variable grid both before and after reclamation conditions around the Yatsushiro Sea and Minamata Bay are simulated by DELFT3D. The initial bottom sediment thickness of 1m is set in the only inner side of the bay and six months simulation results for both before and after reclamation area are compared. The change of hydrodynamic condition inside Minamata Bay due to the remediation project gives a slight change in sediment transport pattern. It is estimated that after the reclamation, the sediment transport moves slower than before it due to the change of its magnitude of velocity above the seabed. As an important result, it is clarified that a change of the amount of bottom sediment which can be re-suspended in Minamata Bay caused by the topographical change can also affect the pattern. Also, this result suggests that the southern part of Yatsushiro Sea can be influenced by sediment contaminated by higher Hg included before the reclamation project.

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Mercury dynamic simulation of Minamata Bay by using a three-dimensional numerical model

et al. 2019

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Modelling of mercury transport and transformations in the water compartment of the Mediterranean Sea

Cited by 34 publications

References 42 publications

Spatial distribution of suspended solids during short-term high river discharge in the Bay of Koper, northern Adriatic Sea

Spatial distribution of suspended solids during short-term high river discharge in the Bay of Koper, northern Adriatic Sea

Impact of Reclamation Project on Mercury-Contaminated Sediment Transport from Minamata Bay into the Yatsushiro Sea

Mercury dynamic simulation of Minamata Bay by using a three-dimensional numerical model

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