Alaska Seismic Hazard Map Active
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, and 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.
Below are other science projects associated with this project.
Alaska Earthquake and Tsunami Hazards
Alaska-Aleutian Subduction Zone Studies
Characterizing the Active Queen Charlotte-Fairweather Fault System
- Overview
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, and 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.
Sources/Usage: Public Domain. View Media DetailsImage of Alaska fault model under development in the geographic information systems environment.(Credit: Adrian Bender, USGS, Alaska Science Center. Public domain.) - Science
Below are other science projects associated with this project.
Alaska Earthquake and Tsunami Hazards
Alaska has more large earthquakes than the rest of the United States combined. More than three-quarters of the state’s population live in an area that can experience a magnitude 7 earthquake. Our research provides objective science that helps stakeholders prepare for and mitigate the effects of future earthquakes and tsunamis, which bolsters the economic health and well-being of Alaska and the...Alaska-Aleutian Subduction Zone Studies
Our research team is exploring seismic and aseismic slip along the Alaska-Aleutian arc and studying the prehistoric record of megathrust earthquakes and tsunamis along the Alaska-Aleutian subduction zone Seismic and Aseismic Slip : Tectonic tremor and associated slow slip events represent a newly discovered part of the earthquake cycle. This research aims to understand the process generating...Characterizing the Active Queen Charlotte-Fairweather Fault System
This research aims to better characterize the earthquake potential of the southern Fairweather Fault in order to provide more accurate fault source data for the USGS National Seismic Hazard Map. Our approach interrogates lidar data and satellite imagery, applies paleoseismological methods to examine earthquake history, and leverages partnerships with USGS scientists from Colorado and California... - Multimedia
- Publications