Technological Risk Management:
The XENVIS information system
The XENVIS GIS integrates vector, polygone, and raster coverages, as well as
reference points for specific spatial objects. The
functionality of the GIS includes
arbitrary zooming, and the interactive editing of legend colors, and
the interactive preparation of hardcopies.
The background map is based on a lanuse map derived from about 450 mapsheets
1:25,000, includeing approximately 50 landuse classes.
As an example, individual map sheets 1:100,000 and 1:25000 have been
scanned. Additional line features in the base map include the
transportation network (rail, major roads, which is also used for a separate
transportation module), canals, pipelines, and high-voltage elitrical
lines. Thematic overalys include groundwater protection zones, city boundaries,
and (gridded) population density.
Many objects like hazardous installations or weather stations can be
identified on the map, and their data loaded from the respective data
bases for display and further analysis, including the simulation of
toxic spills to surface water systems and atmospheric releases.
