An approach for quantifying sediment availability in direct relation to climate change

Wien

2022

Poster

Sonderdruck

13075S

40003766

Initial situation - available data in Austria: In addition to existing country- or state-wide data sets (e.g. geological maps, digital regional forest maps, digital terrain models and soil maps), hazard specific information such as data of previous damage events or hazard index maps are often only regionally or locally available and vary in terms of spatial scale, content and interpretability. Information about frequency and magnitude of landslide and rockfall events, which are essential for risk analysis, are rarely available. To develop a prototype of an improved decision support system, a dynamic component (changes in the future) must be added, since current approaches are designed as static risk planning tools. This requires predictions of relevant parameters like temperature and the precipitation regime, i.e. how and to what extend they will change in the course of climate change. The inherent uncertainty of future conditions can be considered by generating probable scenarios and their impacts on the occurrence of natural hazards, exposure and vulnerability.