• Pedestrian Travel-Time Maps for Chignik, Alaska: An anisotropic model to support tsunami evacuation planning

      Macpherson, A.E.; Nicolsky, D.J.; Koehler, R.D. (2016-07-18)
      Tsunami-induced pedestrian evacuation for the community of Chignik is evaluated using an anisotropic modeling approach developed by the U.S. Geological Survey. The method is based on path-distance algorithms and accounts for variations in land cover and directionality in the slope of terrain. We model evacuation of pedestrians to the tsunami hazard zone boundary and to predetermined assembly areas. Pedestrian travel-time maps are computed for two cases: for travel across all viable terrain or by roads only. Results presented here are intended to provide guidance to local emergency management agencies for tsunami inundation assessment, evacuation planning, and public education to mitigate future tsunami hazards. This report was funded by the National Tsunami Hazard Mitigation Program grant to the Alaska Division of Homeland Security and Emergency Management and University of Alaska Fairbanks from the Department of Commerce/National Oceanic at Atmospheric Administration (NOAA). This does not constitute an endorsement by Alaska Earthquake Center (AEC) or NOAA.
    • Pedestrian Travel-Time Maps for Homer, Alaska: An anisotropic model to support tsunami evacuation planning

      Macpherson, A.E.; Nicolsky, D.J.; Koehler, R.D. (2016-07-18)
      Tsunami-induced pedestrian evacuation for the community of Homer is evaluated using an anisotropic modeling approach developed by the U.S. Geological Survey. The method is based on path-distance algorithms and accounts for variations in land cover and directionality in the slope of terrain. We model evacuation of pedestrians to the tsunami hazard zone boundary and to predetermined assembly areas. The pedestrian travel-time maps are computed for two cases: for travel across all variable terrain or by roads only. Results presented here are intended to provide guidance to local emergency management agencies in tsunami inundation assessment, evacuation planning, and public education to mitigate future tsunami hazards. This report was funded by the National Tsunami Hazard Mitigation Program grant to the Alaska Division of Homeland Security and Emergency Management and University of Alaska Fairbanks from the Department of Commerce/National Oceanic at Atmospheric Administration (NOAA). This does not constitute an endorsement by Alaska Earthquake Center (AEC) or NOAA.
    • Pedestrian Travel-Time Maps for Unalaska/Dutch Harbor, Alaska: An anisotropic model to support tsunami evacuation planning

      Macpherson, A.E.; Nicolsky, D.J.; Koehler, R.D. (2016-07-18)
      Tsunami-induced pedestrian evacuation for the community of Unalaska/Dutch Harbor is evaluated using an anisotropic modeling approach developed by the U.S. Geological Survey. The method is based on pathdistance algorithms and accounts for variations in land cover and directionality in the slope of terrain. We model evacuation of pedestrians to the tsunami hazard zone boundary and to predetermined assembly areas. Pedestrian travel-time maps are computed for two cases: for travel across all viable terrain or by roads only. Results presented here are intended to provide guidance to local emergency management agencies for tsunami inundation assessment, evacuation planning, and public education to mitigate future tsunami hazards. This report was funded by the National Tsunami Hazard Mitigation Program grant to the Alaska Division of Homeland Security and Emergency Management and University of Alaska Fairbanks from the Department of Commerce/National Oceanic at Atmospheric Administration (NOAA). This does not constitute an endorsement by Alaska Earthquake Center (AEC) or NOAA.
    • Pedestrian Travel-Time Maps for King Cove, Alaska: An anisotropic model to support tsunami evacuation planning

      Macpherson, A.E.; Nicolsky, D.J.; Koehler, R.D. (2016-07-18)
      Tsunami-induced pedestrian evacuation for the community of King Cove is evaluated using an anisotropic modeling approach developed by the U.S. Geological Survey. The applied method is based on path-distance algorithms and accounts for variations in land cover and directionality in the slope of terrain. We model evacuation of pedestrians to the tsunami hazard zone boundary and to predetermined assembly areas. The pedestrian travel-time maps are computed for two cases: for travel across all viable terrain or by roads only. Results presented here are intended to provide guidance to local emergency management agencies for tsunami inundation assessment, evacuation planning, and public education to mitigate future tsunami hazards. This report was funded by the National Tsunami Hazard Mitigation Program grant to the Alaska Division of Homeland Security and Emergency Management and University of Alaska Fairbanks from the Department of Commerce/National Oceanic at Atmospheric Administration (NOAA). This does not constitute an endorsement by Alaska Earthquake Center (AEC) or NOAA.
    • Sustaining USArray Capabilities in Alaska

      West, Michael (Alaska Earthquake Center, 2018-05)
    • An improved glimpse into earthquake activity in northeastern Alaska

      Buurman, Helena (2018-09-04)
      The northeastern Brooks Range is long known to be seismically active, but meaningful analysis of the earthquake activity has been limited by the lack of instrumentation. The seismic record in the area dates back to the mid-1970s, and shows a broad northeast-trending zone of earthquake activity. Improvements made in the past 20 years to the permanent seismic network along with new data collected by the temporary USArray network of seismometers located throughout northeastern Alaska have dramatically lowered the earthquake detection threshold in the area. It is now possible to identify patterns within the earthquake data including spatial distribution and occurrence rates, which indicate the presence of previously unrecognized active fault systems. I highlight several such features within the data: a 110 km (60 mi) line of recurring earthquakes near the village of Beaver that strongly suggest a singular fault system; a cluster of earthquakes near the village of Venetie that are likely occurring on a complex active fault system; a years-long mainshock-aftershock sequence of earthquakes near the Draanjik River that began in 2006; and two swarms separated by 50 km (30 mi) in distance and 7 years near the Hulahula River.
    • PEDESTRIAN TRAVEL-TIME MAPS FOR WHITTIER, ALASKA: An anisotropic model to support tsunami evacuation planning

      Gardine, Lea; Nicolsky, Dmitry (2019-05)
      Tsunami-induced pedestrian evacuation for the community of Whittier is evaluated using an anisotropic modeling approach developed by the U.S. Geological Survey. The method is based on path-distance algorithms and accounts for variations in land cover and directionality in the slope of terrain. We model evacuation of pedestrians to exit points from the tsunami hazard zone boundary. The pedestrian travel is restricted to the roads only. Results presented here are intended to provide guidance to local emergency management agencies for tsunami inundation assessment, evacuation planning, and public education to mitigate future tsunami hazards.
    • PEDESTRIAN TRAVEL-TIME MAPS FOR KODIAK, ALASKA: An anisotropic model to support tsunami evacuation planning

      Nicolsky, Dmitry; Gardine, Lea (2019-05)
      Tsunami-induced pedestrian evacuation for the City of Kodiak, U.S. Coast Guard Base and the community of Womens Bay is evaluated using an anisotropic modeling approach developed by the U.S. Geological Survey. The method is based on path-distance algorithms and accounts for variations in land cover and directionality in the slope of terrain. We model evacuation of pedestrians to exit points from the tsunami hazard zone. The pedestrian travel is restricted to the roads only. Results presented here are intended to provide guidance to local emergency management agencies for tsunami inundation assessment, evacuation planning, and public education to mitigate future tsunami hazards.
    • Maritime Guidance for Distant and Local Source Tsunami Events: Kodiak, Alaska

      Nicolsky, Dmitry; Suleimani, Elena; Gardine, Lea (2019-07)
      These documents provide response guidance for Kodiak Harbor in the event of tsunamis for small vessels such as recreational sailing and motor vessels, and commercial fishing vessels. The developed documents follow the guidance developed by the National Tsunami Hazard Mitigation Program (NTHMP) and are based on anticipated effects of a maximum-considered distant and locally generated tsunami event.
    • Maritime Guidance for Distant and Local Source Tsunami Events: Sitka, Alaska

      Nicolsky, Dmitry; Suleimani, Elena; Gardine, Lea (2019-07)
    • Maritime Guidance for Distant and Local Source Tsunami Events: Tatitlek, Alaska

      Nicolsky, Dmitry; Suleimani, Elena; Gardine, Lea (2019-07)
      These documents provide response guidance for Tatitlek Harbor in the event of tsunamis for small vessels such as recreational sailing and motor vessels, and commercial fishing vessels. The developed documents follow the guidance developed by the National Tsunami Hazard Mitigation Program (NTHMP) and are based on anticipated effects of a maximum-considered distant and locally generated tsunami event.
    • Maritime Guidance for Distant and Local Source Tsunami Events: Unalaska, Alaska

      Nicolsky, Dmitry; Suleimani, Elena; Gardine, Lea (2019-07)
      These documents provide response guidance for Unalaska/Dutch Harbor in the event of tsunamis for small vessels such as recreational sailing and motor vessels, and commercial fishing vessels. The developed documents follow the guidance developed by the National Tsunami Hazard Mitigation Program (NTHMP) and are based on anticipated effects of a maximum-considered distant and locally generated tsunami event.
    • PEDESTRIAN TRAVEL-TIME MAPS FOR PERRYVILLE, ALASKA: An anisotropic model to support tsunami evacuation planning

      Gardine, Lea; Nicolsky, Dmitry (2019-08)
      Tsunami-induced pedestrian evacuation for the community of Perryville is evaluated using an anisotropic modeling approach developed by the U.S. Geological Survey. The method is based on path-distance algorithms and accounts for variations in land cover and directionality in the slope of terrain. We model evacuation of pedestrians to exit points located at the tsunami hazard zone boundary. Pedestrian travel-time maps are computed for two cases: i) travel to an existing evacuating shelter and ii) travel to either the evacuation or an alternative shelter. Results presented here are intended to provide guidance to local emergency management agencies for tsunami inundation assessment, evacuation planning, and public education to mitigate future tsunami hazards.
    • Maritime Guidance for Distant and Local Source Tsunami Events: Seldovia Harbor, Alaska

      Nicolsky, Dmitry; Suleimani, Elena; Gardine, Lea (2020-02-27)
    • Maritime Guidance for Distant and Local Source Tsunami Events: Valdez Harbor, Alaska

      Nicolsky, Dmitry; Suleimani, Elena; Gardine, Lea (2020-02-27)
    • Maritime Guidance for Distant and Local Source Tsunami Events: Whittier Harbor, Alaska

      Nicolsky, Dmitry; Suleimani, Elena; Gardine, Lea (2020-02-27)
    • Maritime Guidance for Distant and Local Source Tsunami Events: Homer Harbor, Alaska

      Nicolsky, Dmitry; Suleimani, Elena; Gardine, Lea (2020-02-27)
    • Maritime Guidance for Distant and Local Source Tsunami Events: Seward Harbor, Alaska

      Nicolsky, Dmitry; Suleimani, Elena; Gardine, Lea (2020-02-27)
    • Maritime Guidance for Distant and Local Source Tsunami Events: Cordova Harbor, Alaska

      Nicolsky, Dmitry; Suleimani, Elena; Gardine, Lea (2020-02-27)