Global Assessment Report on Disaster Risk Reduction 2015
Making development sustainable: The future of disaster risk management

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Part I - Chapter 3
investment, capital stock and social expenditure are SIDS (Figure 3.25).
Due to high coastal exposure, storm surges make a major contribution to tropical cyclone AAL in SIDS. In contrast, it tends to represent only a small proportion of the overall cyclone AAL in large countries, where winds can affect not only coastal but extensive inland areas. While the Cayman Islands and Antigua and Barbuda have the highest relative AAL for cyclone wind, the highest relative risk with respect to storm surge is found in the Bahamas, Montserrat and Dominica (Figure 3.26).
In terms of tsunami risk, SIDS such as Tonga, Palau, Solomon Islands and Vanuatu also rank at the top in terms of average annual loss relative to their capital stock. While the AAL may seem relatively low in comparison to other hazards (Figure 3.27), tsunami risk levels are significant in both absolute and relative terms in coastal zones that are directly exposed. As a great deal of critical infrastructure and primary transport facilities are located in coastal zones in SIDS (UNISDR, 2013a

UNISDR. 2013a,Global Assessment Report on Disaster Risk Reduction: From Shared Risk to Shared Value: the Business Case for Disaster Risk Reduction, Geneva, Switzerland: UNISDR.. .
), tsunami impact can be significant.
Figure 3.25 Top 15 countries: Tropical cyclone AAL in relation to social expenditure, capital investment and capital stock
(Source: UNISDR with data from Global Risk Assessment and the World Bank.)
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