NUTRIENT MODELLING IN COASTAL WATERS OF IZMIT BAY, TURKEY. Engin, G., O., Gurbulak, E., Celen, M., Ulu, F., & Oncel, M., S. FRESENIUS ENVIRONMENTAL BULLETIN, 23(12B):3345-3352, 2014.
abstract   bibtex   
The ECOLab module of the MIKE 3 model based on the coupling between a hydrodynamic part and an ecological part which accounts for mainly the nutrient enrichment was utilized to study nutrient cycles and their contribution to eutrophication in the Izmit Bay located in the Sea of Marmara. The water quality data, including on-site parameters, produced between November 2005 and November 2006 were used for model runs and validation. The samples were collected from 8 different points on the cross-section of the bay at different depths considering the bottom point of the sea bed in order to represent the third dimension. The ecological model used in this study allows creating 3D images/results that simulate the actual situation. The spatial distribution of state variables such as, dissolved Biological Oxygen Demand (BODd), dissolved oxygen (DO), ammonia, nitrate and nitrite, and phosphate concentrations were investigated. The processes, used as arguments in the differential equations involved in ECOLab, were advective dispersive transport, biological, chemical and physical transformation process and settling. According to the model results, the discharges of main streams have a big influence on the variation of the BOD, especially in the coastal and shallow regions. Additionally, the modelled ammonia, nitrate and phosphate concentrations were determined at the discharge points of the four main streams reaching the bay.
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 title = {NUTRIENT MODELLING IN COASTAL WATERS OF IZMIT BAY, TURKEY},
 type = {article},
 year = {2014},
 identifiers = {[object Object]},
 pages = {3345-3352},
 volume = {23},
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 created = {2016-04-28T08:45:57.000Z},
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 last_modified = {2016-04-28T08:45:57.000Z},
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 citation_key = {ISI:000348744900013},
 source_type = {article},
 abstract = {The ECOLab module of the MIKE 3 model based on the coupling between a
hydrodynamic part and an ecological part which accounts for mainly the
nutrient enrichment was utilized to study nutrient cycles and their
contribution to eutrophication in the Izmit Bay located in the Sea of
Marmara. The water quality data, including on-site parameters, produced
between November 2005 and November 2006 were used for model runs and
validation. The samples were collected from 8 different points on the
cross-section of the bay at different depths considering the bottom
point of the sea bed in order to represent the third dimension. The
ecological model used in this study allows creating 3D images/results
that simulate the actual situation. The spatial distribution of state
variables such as, dissolved Biological Oxygen Demand (BODd), dissolved
oxygen (DO), ammonia, nitrate and nitrite, and phosphate concentrations
were investigated. The processes, used as arguments in the differential
equations involved in ECOLab, were advective dispersive transport,
biological, chemical and physical transformation process and settling.
According to the model results, the discharges of main streams have a
big influence on the variation of the BOD, especially in the coastal and
shallow regions. Additionally, the modelled ammonia, nitrate and
phosphate concentrations were determined at the discharge points of the
four main streams reaching the bay.},
 bibtype = {article},
 author = {Engin, Guleda Onkal and Gurbulak, Ercan and Celen, Meltem and Ulu, Feride and Oncel, Mehmet Salim},
 journal = {FRESENIUS ENVIRONMENTAL BULLETIN},
 number = {12B}
}

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