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  1. The map was created by collating maps computed using national and regional probabilistic seismic hazard models developed by various institutions and projects, and by GEM Foundation scientists. The OpenQuake engine, an open-source seismic hazard and risk calculation software developed principally by the GEM Foundation, was used to calculate the ...

  2. Seismic hazard is the hazard associated with potential earthquakes in a particular area, and a seismic hazard map shows the relative hazards in different areas. The maps are made by considering what we currently know about: Past faults and earthquakes The behavior of seismic waves as they travel through different parts of the U.S. crust The ...

  3. Urban Seismic Hazards Includes California, Central and Eastern U.S., Pacific Northwest hazard maps and data. Foreign Hazard Maps Includes Afghanistan, Sumatra, State of Gujarat,India. See also Global Earthquake Model (GEM). See also: California Hazard Maps - California Geological Survey; Canadian Hazard Maps - Natural Resources Canada

  4. The seismic hazard information is combined considering the potential for earthquakes on all seismic sources, and the level of ground shaking that would be caused by those earthquakes. The result is expressed as the level of ground shaking (expressed as a percentage of gravity) that on average occurs every 500 years.

  5. These ‘urban seismic hazard’ maps provide a much higher-resolution view of the potential for strong earthquake shaking than previously available. This new view is particularly important for Seattle, which sits atop a sedimentary basin that strongly affects the patterns of earthquake ground shaking and therefore, of potential damage.

  6. The map was created by collating maps computed using national and regional probabilistic seismic hazard models developed by various institutions and projects, and by GEM Foundation scientists. The OpenQuake engine, an open-source seismic hazard and risk calculation software developed principally by the GEM Foundation, was used to calculate the ...

  7. The National Seismic Hazard Maps for Japan is prepared by a governmental organization, the Headquarters for Earthquake Research Promotion (HERP) to estimate strong motions caused by earthquakes that could occur in Japan in the future and show the estimated results on the maps. The National Seismic Hazard Maps for Japan consist of two types of ...

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