Vulnerability, a key topic in risk analysis, is defined as the
degree of loss to a given set of elements resulting from the
occurrence of the hazard. Qualitative (proxy) and quantitative
measures for the degree of susceptibility to damaging effects of
natural hazards focus on vulnerability of crops, built structures,
environment, economy, people, and institutions.
Population vulnerability can fairly easily be assed using the
population density as proxy, but vulnerability of buildings,
facilities or e.g. industry is more difficult to assess. Depending
on the hazard and on the purpose, we perform vulnerability analysis
to define, identify, and classify the vulnerability towards natural
hazards using e.g. remote sensing, socioeconomic analysis, site
inspections and interviews (Figure 1).
Figure 1: Example of terrain slope used to assess flood
vulnerability of oil palms in Malaysia.