GEM Atlas - Premium Map PortalGEM Atlas 1.0
A new and easier way of accessing seismic hazard information
Atlas is a dynamic web portal allowing subscribers to view the GSHM in a GIS style mapviewer featuring instant display and download of hazard curves for the selected sites. This is a subscription service which provides clients with a pay-as-you-go alternative to licensing the GSHM data layers directly.
Global Seismic Hazard Map
The Global Earthquake Model (GEM) Global Seismic Hazard Maps (version 2019.1) comprise 12 global data layers containing geo-referenced hazard values for peak ground acceleration (PGA), spectral acceleration (SA) at 0.2s and 1.0s,on reference rock and with soil conditions for 10% and 2% probability of exceedance (PoE) in 50years. The maps were computed on a global grid of sites, spaced approximately 12 km, using GEM’s global hazard compilation of 31 national and regional hazard models.
Brochure
What's inside
Main layer: Global seismic hazard map in terms of PGA for a 10% PoE in 50 years (475-year return period)
Spectral periods: Main layer also available at SA (0.2s) and SA (1.0s)
Return periods: All layers for 2% PoE in 50 years (2475-year return period)
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