Seismic Hazard Maps
The National Seismic Hazard Maps developed by the USGS show the spatial probability of peak earthquake-driven ground motion levels. Since the last revisions to the map for Alaska in 2007, scientists have made significant advances in understanding active faulting, fault slip rates, and fault behavior.
Return to Geology >> Hazards >> Alaska Earthquake and Tsunami Hazards
We are working to update the National Seismic Hazard Map for Alaska with the past decade of new science in response to requests from the state’s engineering and geotechnical communities. Production of the maps involves:
1) developing a seismic hazard source model
2) specifying a ground motion model
3) calculating the probabilities
For this task, Alaska-based personnel focus on the development of the seismic hazard source model. We are working to incorporate all updates to the Quaternary fault and fold database previously published by the Alaska Department of Geological and Geophysical Surveys and expand the existing database with detailed information about fault geometry and slip rate, especially for offshore structures.
National Seismic Hazard Maps from the 2023 The US National Seismic Hazard Model
Nearly 75 percent of the U.S. could experience damaging earthquake shaking, according to a recent U.S. Geological Survey-led team of 50+ scientists and engineers. Map from 2023 National Seismic Hazard Model displays the likelihood of damaging earthquake shaking in the United States over the next 100 years.
Below are other science projects associated with this project.
Alaska Earthquake and Tsunami Hazards
Characterizing the Active Queen Charlotte-Fairweather Fault System
Alaska-Aleutian Subduction Zone Studies
The National Seismic Hazard Maps developed by the USGS show the spatial probability of peak earthquake-driven ground motion levels. Since the last revisions to the map for Alaska in 2007, scientists have made significant advances in understanding active faulting, fault slip rates, and fault behavior.
Return to Geology >> Hazards >> Alaska Earthquake and Tsunami Hazards
We are working to update the National Seismic Hazard Map for Alaska with the past decade of new science in response to requests from the state’s engineering and geotechnical communities. Production of the maps involves:
1) developing a seismic hazard source model
2) specifying a ground motion model
3) calculating the probabilities
For this task, Alaska-based personnel focus on the development of the seismic hazard source model. We are working to incorporate all updates to the Quaternary fault and fold database previously published by the Alaska Department of Geological and Geophysical Surveys and expand the existing database with detailed information about fault geometry and slip rate, especially for offshore structures.
National Seismic Hazard Maps from the 2023 The US National Seismic Hazard Model
Nearly 75 percent of the U.S. could experience damaging earthquake shaking, according to a recent U.S. Geological Survey-led team of 50+ scientists and engineers. Map from 2023 National Seismic Hazard Model displays the likelihood of damaging earthquake shaking in the United States over the next 100 years.
Below are other science projects associated with this project.