WIT Press


Magnitude And Frequency: Challenges For The Assessment Of Vulnerability To Geomorphic Hazards

Price

Free (open access)

Paper DOI

10.2495/RISK120171

Volume

44

Pages

12

Page Range

191 - 202

Published

2012

Size

1,011 kb

Author(s)

S. Fuchs, M. Keiler & T.-C. Tsao

Abstract

In natural hazard research, risk is defined as a function of (1) the probability of occurrence of a hazardous process, and (2) the assessment of the related extent of damage, defined by the value of elements at risk exposed and their physical vulnerability. Until now, various works have been undertaken to determine vulnerability values for objects exposed to geomorphic hazards such as mountain torrents. Yet, many studies only provide rough estimates for vulnerability values based on proxies for process intensities. However, the deduced vulnerability functions proposed in the literature show a wide range, in particular with respect to medium and high process magnitudes. In our study, we compare vulnerability functions for torrent processes derived from studies in test sites located in the Austrian Alps and in Taiwan. Based on this comparison we expose needs for future research in order to enhance mountain hazard risk management with a particular focus on the question of vulnerability on a catchment scale. Keywords: exposure, vulnerability, torrents, risk management, Taiwan, Austria.

Keywords

Keywords: exposure, vulnerability, torrents, risk management, Taiwan, Austria