Boundary current instabilities, upwelling, shelf mixing and eutrophication processes in the Black Sea

Sur, Halil İbrahim; Özsoy, Emi̇n; Ünlüata, Ümi̇t

doi:10.1016/0079-6611(94)90020-5

Cited by 129 publications

(52 citation statements)

References 63 publications

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“…For instance, in the literature, the annual load of inorganic nitrogen brought by the Danube varies between 600×10 3 t to 1000×10 3 t (e.g. Sur et al, 1994;Cociasu et al, 1997;Humborg et al, 1997;Konovalov et al, 2000;Friedrich et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

“…the Danube, the Dnestr and the Dnepr), and is well known to be a region of enhanced biological production fed by the nutrients brought by the river discharges, as shown by satellite images (e.g. Sur et al, 1994;Nezlin et al, 1999). The landlocked geometry of the Black Sea basin makes easier the computation of water and nitrogen budgets to check the internal consistency of the model dynamics and the convergence towards a steady state solution.…”

Section: Introductionmentioning

confidence: 99%

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Modeling the nitrogen fluxes in the Black Sea using a 3D coupledhydrodynamical-biogeochemical model: transport versus biogeochemicalprocesses, exchanges across the shelf break and comparison of the shelf anddeep sea ecodynamics

Grégoire

Beckers

2004

Biogeosciences

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Abstract.A 6-compartment biogeochemical model of nitrogen cycling and plankton productivity has been coupled with a 3D general circulation model in an enclosed environment (the Black Sea) so as to quantify and compare, on a seasonal and annual scale, the typical internal biogeochemical functioning of the shelf and of the deep sea as well as to estimate the nitrogen and water exchanges at the shelf break. Model results indicate that the annual nitrogen net export to the deep sea roughly corresponds to the annual load of nitrogen discharged by the rivers on the shelf.The model estimated vertically integrated gross annual primary production is 130 g C m −2 yr −1 for the whole basin, 220 g C m −2 yr −1 for the shelf and 40 g C m −2 yr −1 for the central basin. In agreement with sediment trap observations, model results indicate a rapid and efficient recycling of particulate organic matter in the sub-oxic portion of the water column (60-80 m) of the open sea. More than 95% of the PON produced in the euphotic layer is recycled in the upper 100 m of the water column, 87% in the upper 80 m and 67% in the euphotic layer. The model estimates the annual export of POC towards the anoxic layer to 4 10 10 mol yr −1 . This POC is definitely lost for the system and represents 2% of the annual primary production of the open sea.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling the nitrogen fluxes in the Black Sea using a 3D coupledhydrodynamical-biogeochemical model: transport versus biogeochemicalprocesses, exchanges across the shelf break and comparison of the shelf anddeep sea ecodynamics

Grégoire

Beckers

2004

Biogeosciences

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show abstract

“…Also, the shelf is well known as a region of enhanced biological production fed by the nutrients brought by the river discharges as shown by satellite images (e.g. Sur et al 1994, Nezlin et al 1999. The Danube receives the effluents from 10 European countries and constitutes a major source of pollutants, nutrients and organic matter (Popa 1993).…”

Section: Abstract: Mathematical Modeling · Coupled Biogeochemical-hymentioning

confidence: 99%

Nitrogen budget of the northwestern Black Sea shelf inferred from modeling studies and in situ benthic measurements

Grégoire¹,

Friedrich²

2004

Mar. Ecol. Prog. Ser.

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“…The currents play important role to transport material. For example: Danube is the most known among the other European rivers which flows into the Black Sea and meanders of the river effluent are detected and there are the some semi-permanent anticyclonic eddies between the cyclonic boundary current which flows from west to east, and the waves of the coast (Sur et al, 1994). The western coast of the Black Sea is not Table 2.…”

Section: Assessment Of Pollutionmentioning

confidence: 99%

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Sur¹,

Sur²,

Apak³

et al. 2012

Turk. J. Fish. Aquat. Sci.

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The aim of this work is to assess the sediment pollution by contamination factor (C f ) of metals and degree of contamination (C D ) of stations. Sediment samples were collected from 26 stations in autumn 2010 and analyzed for metals (Al, Cd, Cu, Pb, V, and Hg). The degree of contamination is estimated as very high at one station, considerably high at nine stations, moderately high at fifteen stations and low at one station. This study also helps to classify the contaminants whether they are anthropogenic or not.

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Boundary current instabilities, upwelling, shelf mixing and eutrophication processes in the Black Sea

Cited by 129 publications

References 63 publications

Modeling the nitrogen fluxes in the Black Sea using a 3D coupledhydrodynamical-biogeochemical model: transport versus biogeochemicalprocesses, exchanges across the shelf break and comparison of the shelf anddeep sea ecodynamics

Modeling the nitrogen fluxes in the Black Sea using a 3D coupledhydrodynamical-biogeochemical model: transport versus biogeochemicalprocesses, exchanges across the shelf break and comparison of the shelf anddeep sea ecodynamics

Nitrogen budget of the northwestern Black Sea shelf inferred from modeling studies and in situ benthic measurements

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