Comparison of global disaster risk calculations

Question 1

Disaster risk calculators

Answer 1

1) DRI - focuses on human imapcts and human exposure. Vulnerability calc depends on five socio-economic and environmental indicators (Scale 0>1)
2) Hotspots report- focuses on human and economic losses and GDP/population exposure. Vulnerability is the vul. coefficient from historic losses.
3) WRI = calculates the probable risk of a country being affected by a disaster - focuses on vulnerability causes - calcs. no. of people exposed to each hazard/year. Vulner. is a fnc equally weighting the susceptibility, coping and adaptive capacity.

Question 2

Comparisons of the data

Answer 2

• Inclusion of hazards in DRI, WRI and Hotspots report varies, as do the methods and measures used for quantifying the hazards
• VUlnerabiliity parameters are also different: DRI = populationl Hospots = Pop and GDP; WRI = susceptibility, coping and adaptive capacities.
• DRI and WRI are only at national scales; though Hotspots does have sub-national resolution even though H/E/V data are at different resolutions.
• ALl assume that hazards act separately in a multi-hzard environment instead of interacting and cascading.
• Hazards are difficult to compare becasue they have different scale, RTs, intensities and impacts.