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Auflistung nach Autor:in "Woletz, Kurt"

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  • Konferenzbeitrag
    New Methods including Picture Processing for Hydro-Meteorological On-Line Data Acquisition
    (Environmental Informatics and Systems Research, 2007) Kollmitzer, Christian; Skritek, Paul; Woletz, Kurt; Stadler, Hermann
    Early warning systems, quality control networks and sustainable protection of drinking water resources became more and more important as a main task of water resources management. They heavily rely on on-line measurements, which mostly are automated. Nevertheless the quality of the measured data can be increased by an integrated Quality Management System, including also the field measurement devices into a complete chain of quality traceability. To increase the data reliability alternative measuring methods have to be evaluated. In our prototype development staff gauge images are digitally processed to achieve a second value for the actual water-level. If the both detected water levels are different, an alarm is generated or remote configuration procedures are performed. The system is a contribution to an integrated Quality Management Tool, allowing retracing the complete chain of measuring value acquisition. Low Earth Orbit Satellites then allow worldwide “nomadic” on-line data-communication from otherwise inaccessible regions. Their combination with plausibility tests in the run-up to the database enables us to accept the great challenge of "real-time" supervision of the quality of the measurements.
  • Konferenzbeitrag
    The Challenge of Drinking-Water Quality Surveillance in Alpine Regions: Real-time data access.
    (EnviroInfo Dessau 2012, Part 1: Core Application Areas, 2012) Stadler, Hermann; Leis, Albrecht; Harum, Till; Woletz, Kurt; Farnleitner, Andreas H.
    Water resources from alpine and other mountainous karst aquifers play an important role for water supply in many European countries. As regulated in the WFD (Water Framework Directive), karstic catchments require sustainable protection. The increasing strains to such regions and the different utilization in the watersheds of karst springs are important triggers to establish early warning systems and quality assurance networks in water supplies. These systems rely heavily on in-situ measurements and online and near real-time availability of the data. With a satellite based network of measuring and sampling stations it was possible to carry out precipitation triggered event monitoring campaigns at different karst springs combining on-line measurements of hydrological parameters with fieldlaboratory based analyses of microbial faecal indicators.