Reports and Papers
- Fedra, K. and Jamieson, D.G.
- An object-oriented approach to model integration:
a river basin information system example.
In: Kovar, K. and Nachtnebel, H.P. [eds.]:
IAHS Publ. no 235, p669-676.
Model integration
Both the water resources model as well as the water quality model
(Figure 6) use network-based scenarios.
Through sharing the generic
layer of the RiverNetworkObject, and therefor the linked
RiverBasinObjects, the consistency of the scenarios of
various related models can be guaranteed.
The models, though spatially distributed, operate on a schematic
representation of the river; this, in turn, is linked to the actual spatial
location, and thus can be mapped at the GIS level, through the
spatially referenced RiverBasinObjects of the system, which in turn
link to the spatial objects (overlays) in the GIS.
A different strategy is used for the spatially aggregated
irrigation water demand estimation model and the rainfall-runoff model.
They both operate with spatially averaged parameters defined for
unit irrigation ares or hydrologically homogeneous subcatchments.
These parameters are derived from the underlying, more detailed spatial
objects such as a digital elevation model, and geological, soil, and
landuse maps.
The translation between a fully spatially explicit description, where
available, and the model's interpretation is accomplished by the methods
of the ModelScenarioObject that draws its data from
the respective RiverBasinObjects and their underlying GIS layers;
when using alternative models, that have a different spatial resolution,
the only necessary change is the addition of another method to
derive the appropriate data representation.
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