TY - JOUR
T1 - An integrated model for the Danubian Lowland - methodology and applications
AU - Refsgaard, J.C.
AU - Sørensen, H.R.
AU - Mucha, I.
AU - Rodak, D.
AU - Hlavaty, Z.
AU - Bansky, L.
AU - Klucovska, J.
AU - Topolska, J.
AU - Takac, J.
AU - Kosc, V.
AU - Enggrob, H.G.
AU - Engesgaard, P.
AU - Jensen, J.K.
AU - Fiselier, J.
AU - Griffioen, J.
AU - Hansen, S.
N1 - Funding Information:
The present paper is based on results from the project ‘Danubian Lowland – Ground Water Model’ supported by the European Commission under the PHARE program. The project was executed by the Slovak Ministry of the Environment. The work was carried out by an international group of research and consulting organisations as reflected by the team of authors. The constructive criticisms of two anonymous reviewers are acknowledged.
PY - 1998/12
Y1 - 1998/12
N2 - A unique integrated modelling system has been developed and applied for environmental assessment studies in connection with the Gabcikovo hydropower scheme along the Danube. The modelling system integrates model codes for describing the reservoir (2D flow, eutrophication, sediment transport), the river and river branches (1D flow including effects of hydraulic control structures, water quality, sediment transport), the ground water (3D flow, solute transport, geochemistry), agricultural aspects (crop yield, irrigation, nitrogen leaching) and flood plain conditions (dynamics of inundation pattern, ground water and soil moisture conditions, and water quality). The uniqueness of the established modelling system is the integration between the individual model codes, each of which provides complex descriptions of the various processes. The validation tests have generally been carried out for the individual models, whereas only a few tests on the integrated model were possible. Based on discussion and examples, it is concluded that the results from the integrated model can be assumed less uncertain than outputs from the individual model components. In an example, the impacts of the Gabcikovo scheme on the ecologically unique wetlands created by the river branch system downstream of the new reservoir have been simulated. In this case, the impacts of alternative water management scenarios on ecologically important factors such as flood frequency and duration, depth of flooding, depth to ground water table, capillary rise, flow velocities, sedimentation and water quality in the river system have been explicitly calculated.
AB - A unique integrated modelling system has been developed and applied for environmental assessment studies in connection with the Gabcikovo hydropower scheme along the Danube. The modelling system integrates model codes for describing the reservoir (2D flow, eutrophication, sediment transport), the river and river branches (1D flow including effects of hydraulic control structures, water quality, sediment transport), the ground water (3D flow, solute transport, geochemistry), agricultural aspects (crop yield, irrigation, nitrogen leaching) and flood plain conditions (dynamics of inundation pattern, ground water and soil moisture conditions, and water quality). The uniqueness of the established modelling system is the integration between the individual model codes, each of which provides complex descriptions of the various processes. The validation tests have generally been carried out for the individual models, whereas only a few tests on the integrated model were possible. Based on discussion and examples, it is concluded that the results from the integrated model can be assumed less uncertain than outputs from the individual model components. In an example, the impacts of the Gabcikovo scheme on the ecologically unique wetlands created by the river branch system downstream of the new reservoir have been simulated. In this case, the impacts of alternative water management scenarios on ecologically important factors such as flood frequency and duration, depth of flooding, depth to ground water table, capillary rise, flow velocities, sedimentation and water quality in the river system have been explicitly calculated.
KW - Danube
KW - Environmental impacts
KW - Floodplain
KW - Gabcikovo
KW - Groundwater
KW - Hydropower
KW - Integrated modelling
KW - River branch
UR - http://www.scopus.com/inward/record.url?scp=13044304543&partnerID=8YFLogxK
U2 - 10.1023/A:1008088901770
DO - 10.1023/A:1008088901770
M3 - Article
AN - SCOPUS:13044304543
SN - 0920-4741
VL - 12
SP - 433
EP - 465
JO - Water Resources Management
JF - Water Resources Management
IS - 6
ER -