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Community variations in social vulnerability to Cascadia-related tsunamis in the U.S. Pacific Northwest

Natural Hazards

By:
, , and
DOI: 10.1007/s11069-009-9376-1

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Abstract

Tsunamis generated by Cascadia subduction zone earthquakes pose significant threats to coastal communities in the U. S. Pacific Northwest. Impacts of future tsunamis to individuals and communities will likely vary due to pre-event socioeconomic and demographic differences. In order to assess social vulnerability to Cascadia tsunamis, we adjust a social vulnerability index based on principal component analysis first developed by Cutter et al. (2003) to operate at the census-block level of geography and focus on community-level comparisons along the Oregon coast. The number of residents from blocks in tsunami-prone areas considered to have higher social vulnerability varies considerably among 26 Oregon cities and most are concentrated in four cities and two unincorporated areas. Variations in the number of residents from census blocks considered to have higher social vulnerability in each city do not strongly correlate with the number of residents or city assets in tsunami-prone areas. Methods presented here will help emergency managers to identify community sub-groups that are more susceptible to loss and to develop risk-reduction strategies that are tailored to local conditions. ?? z.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Community variations in social vulnerability to Cascadia-related tsunamis in the U.S. Pacific Northwest
Series title:
Natural Hazards
DOI:
10.1007/s11069-009-9376-1
Volume
52
Issue:
2
Year Published:
2010
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Natural Hazards
First page:
369
Last page:
389
Number of Pages:
21