首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Visualization of uncertainty in natural hazards assessments using an interactive cartographic information system
Authors:Melanie Kunz  Adrienne Grêt-Regamey and Lorenz Hurni
Institution:(1) Institute of Cartography and Geoinformation, ETH Zurich, 8093 Zurich, Switzerland;(2) Planning of Landscape and Urban Systems, Institute for Spatial and Landscape Planning, ETH Zurich, 8093 Zurich, Switzerland
Abstract:Natural hazard assessments are always subject to uncertainties due to missing knowledge about the complexity of hazardous processes as well as their natural variability. Decision-makers in the field of natural hazard management need to understand the concept, components, sources, and implications of existing uncertainties in order to reach informed and transparent decisions. Until now, however, only few hazard maps include uncertainty visualizations which would be much needed for an enhanced communication among experts and decision-makers in order to make informed decisions possible. In this paper, an analysis of how uncertainty is currently treated and communicated by Swiss natural hazards experts is presented. The conducted expert survey confirmed that the communication of uncertainty has to be enhanced, possibly with the help of uncertainty visualizations. However, in order to visualize the spatial characteristics of uncertainty, existing uncertainties need to be quantified. This challenge is addressed by the exemplary simulation of a snow avalanche event using a deterministic model and quantified uncertainties with a sensitivity analysis. Suitable visualization methods for the resulting spatial variability of the uncertainties are suggested, and the advantages and disadvantages of their implementation in an interactive cartographic information system are discussed.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号