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The Use of Global Datasets for Risk and Vulnerability Assessment: the GRAVITY project Pascal Peduzzi, United Nation Environment Programme Pascal.Peduzzi@grid.unep.ch Hy Dao Damien Rochette Christian Herold
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Context The UNDP/ERD World Vulnerability Report Expert Meeting on Vulnerability and Risk Analysis and Indexing, Sept. 2000 UNDP/ERD - UNEP/GRID contract, 4 staffs paid at GRID-Geneva Feasibility study : Feb.-Jun. 2001 Consolidation : Jul.-Dec. 2001
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Risk Mitigation ?
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Formula Risk i = Hazard i x Population x Vulnerability i Realized Risk (CRED) Hazard x population Physical exposure = Vulnerability Risk tot = Risk volc + Risk flood + Risk cycl. + … + Risk n
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Geophysical and statistical datasets
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Access to information in time
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Exploration of the CRED For 1980-2000
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Selection criterion
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Need special consideration for: Tsunamis: Papua New Guinea (67.8%), Ecuador (14.3%) Landslides: China (6%), India (3,46%), Indonesia (13,88%), Peru (33%), Colombia (4,2%), Philippines (4.59%) and Ecuador (10.2%). Need to take into account drought Drought (food insecurity) = 46.54%
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The choice of indicators
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Using the database on population CIESIN/UNEP
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Socio-economic datasets
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Identified factors
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Crossplot between estimated and realized risk for floods r = 0.61
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Several products
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Exposure to flood
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Thank you Http://www.grid.unep.ch/preview
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