Methodology

Atlas of the Human Planet 2017 - Global Exposure to Natural Hazards

Scheme of the methodology for the Atlas of the Human Planet 2017

The methodology adopted for the Atlas of the Human Planet 2017 prescribes to overlay hazard maps (for one return period) with population grids (GHS-POP) and built-up layer (GHS-BU) in order to derive the total population living in the hazard zone and the total built-up area potentially exposed to the specific hazard. This method has been repeated both for population and built-up for the four GHSL available epochs (1975-1990-2000-2015).

For detailed information, please refer to the technical annexes of the Atlas of the Human Planet 2017.

INPUT DATASETS

Name

Dataset used for the seismic hazard
Return Period: 475 years
Semantic of the final map: Classes from 5 to 8 derived from the Mercalli Modified Intensity Scale
Source: GSHAP Seismic hazard intensity map (475-return period, 10% probability of exceedance in 50-year of exposure)

Name

Dataset used for the tsunami hazard
RP: 500 years
Semantic of the final map: Area flooded by tsunami run-up height
Source: Tsunami Hazard (Run up) 500-RP years (GAR 2015)

Name

Dataset used for the tropical cyclone wind hazard
RP: 250 years
Semantic of the final map: Area affected by SS1 of higher, i.e. sustained wind speed [km/h] of Saffir-Simpson category 1 or higher
Source: Cyclone wind hazard map 250-RP (GAR 2015)

Name

Dataset used for the tropical cyclone storm surge hazard
RP: 250 years
Semantic of the final map: Inundated area. Area affected by storm surge
Source: Storm Surge hazard map 250-RP (elaborated from GAR 2015)