Civil Engineering Reference
In-Depth Information
HDM
HDM
Watershed
runoff/pollution wash-off
JRODOS
RETRACE
RETRACE
ADM
ADM
2D - Model
Water and sediment
transport in rivers
RIVTOX
RIVTOX
Data
Base
Data
Base
Compartment model
Radionuclide transport in
water and fish
HDM
HDM
POSEIDON
POSEIDON
2D - Model
Radionuclide transport in
COASTOX
COASTOX
shallow reservoirs, lakes,
coastal waters
3D - Model
Radionuclide transport in
complex water bodies
THREETOX
THREETOX
Aquatic food chains
FDMA
FDMA
Fig. 21.2
Hydrological model chain in JRodos
21.3 Representation of Location-Dependent Results
in RODOS
Location-dependent results in RODOS are calculated in the centre points of the
cells of a square Cartesian grid; results that develop with time are available for each
time step. The computational grid is centered at the point of the release; and around
the latter lie the cells with the finest resolution, where users can choose between
various sizes. The cell sizes then increase step by step as a function of the radial
distance from the location of the source.
By default, results are represented as color-coded grid cells superimposed on
maps. Map-type results can be displayed on the screen and also stored as image or
data files.
A visible picture in JRodos is made up of a variety of layers consisting of results
and maps that can be combined arbitrarily. On delivery the system contains a
default set of maps; in addition, user-customized maps or map layers from the
Internet
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can be used.
Figure
21.3a
shows a screen shot of such a map-type result in JRodos with the
system's default layers used for the background. The computation grid with the
coarser cells as the distance from the source increases can be discerned. The result
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At present, “ESRI shapefile” and “geotiff” geographic data formats is supported. Alternatively,
one may use geodata from a PostGIS database or from the Web Map Service (WMS) server. The
use of Google Maps (hybrid view) or OpenStreetMaps layers is also possible.
