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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Suleimani, E.N. Nicolsky, D.J. Koehler, R.D. Combellick, R.A. Hansen, R.A. More... Tag Types Theme (10) Place (10) Tag Schemes Alaska Division of Geological & Geophysical Surveys (10) ISO 19115 Topic Category (10) View Results as: JSON ATOM CSV

Tsunami inundation maps of Seward and northern Resurrection Bay, Alaska The purpose of this study is to evaluate tsunami hazard for the community of Seward and northern Resurrection Bay area, Alaska. This report will provide guidance to local emergency managers in tsunami hazard assessment. We used a numerical modeling method to estimate the extent of inundation by tsunami waves generated from earthquake and landslide sources. Our tsunami scenarios included a repeat of the tsunami of the 1964 Great Alaska Earthquake, as well as tsunami waves generated by two hypothetical Yakataga Gap earthquakes in northeastern Gulf of Alaska, hypothetical earthquakes in Prince William Sound and Kodiak asperities of the 1964 rupture, and local underwater landslides in Resurrection Bay. Results of numerical... Tags: Coastal and River, Earthquake, Earthquake Related Slope Failure, Emergency Preparedness, Engineering, All tags... Engineering Geology, Fault Displacement, Faulting, Faults, Flood, Geologic Hazards, Geology, Inundation, Kenai Peninsula, Kenai Peninsula Borough Coastal District, Landslide, Modeling, Resurrection Bay, Seismic Hazards, Seward, Slides, Slope, Slope Instability, Southcentral Alaska, Surface, Tides, Tsunami, geoscientificInformation, Fewer tags Tsunami inundation maps of Fox Islands communities, including Dutch Harbor and Akutan, Alaska Potential tsunami hazards for the Fox Islands communities of Unalaska/Dutch Harbor and Akutan were evaluated by numerically modeling the extent of inundation from tsunami waves generated by hypothetical earthquake sources and taking into account historical observations. Worst-case hypothetical scenarios are defined by analyzing results of a sensitivity study of the tsunami dynamics related to various slip distributions along the Aleutian megathrust. The worst-case scenarios for Unalaska and Akutan are thought to be thrust earthquakes in the Fox Islands region with magnitudes ranging from Mw 8.8 to Mw 9.1 that have their greatest slip at 30-40 km (18-25 mi) depth. We also consider Tohoku-type ruptures and an outer-rise... Tags: Active Fault, Akutan, Coastal, Earthquake, Earthquake Related Slope Failure, All tags... Emergency Preparedness, Engineering, Engineering Geology, Fault Displacement, Faulting, Flood, Fox Islands, Geologic Hazards, Geology, Hazards, Inundation, Land Subsidence, Landslide, Modeling, Raster Image, Seismic Gap, Seismic Hazards, Slides, Slope, Slope Instability, Tides, Topography, Tsunami, Unalaska, geoscientificInformation, Fewer tags Tsunami inundation maps of Elfin Cove, Gustavus, and Hoonah, Alaska In this report, we evaluate potential tsunami hazards for southeastern Alaska communities of Elfin Cove, Gustavus, and Hoonah and numerically model the extent of inundation from tsunami waves generated by tectonic and landslide sources. We perform numerical modeling of historic tsunami events, such as the tsunami triggered by the 1964 Great Alaska Earthquake, and the tsunami waves generated by the recent 2011 Tohoku and 2012 Haida Gwaii earthquakes. Hypothetical tsunami scenarios include variations of the extended 1964 rupture, megathrust earthquakes in the Prince William Sound and Alaska Peninsula regions, and a Cascadia megathrust earthquake. Local underwater landslide events in Taylor Bay and Port Frederick,... Tags: Active Fault, Bartlett Cove, Coastal, Coastal and River, Earthquake, All tags... Earthquake Related Slope Failure, Emergency Preparedness, Engineering, Engineering Geology, Fault Displacement, Faulting, Flood, Geologic Hazards, Geology, Hazards, Humpback Creek, Icy Strait, Inundation, Landslide, Modeling, Port Frederick, Raster Image, Rock Avalanche, Rockfall, Seismic Hazards, Slides, Slope, Slope Instability, Southeast Alaska, Taylor Bay, Tidal Inlet, Tides, Topography, Tsunami, geoscientificInformation, Fewer tags Tsunami inundation maps of Port Valdez, Alaska We evaluate potential tsunami hazards for the city of Valdez and numerically model the extent of inundation from tsunamis generated by earthquake and landslide sources. Tsunami scenarios include a repeat of the tsunami triggered by the 1964 Great Alaska Earthquake, as well as hypothetical tsunamis generated by an extended 1964 rupture, a Cascadia megathrust earthquake, and earthquakes from the Prince William Sound and Kodiak asperities of the 1964 rupture. Local underwater landslide events in Port Valdez are also considered as credible tsunamigenic scenarios. Results of numerical modeling are verified by simulating the tectonic and landslide-generated tsunamis in Port Valdez observed during the 1964 earthquake.... Tags: Active Fault, Alaska Earthquake 1964, Bathymetry, Coastal, Coastal and River, All tags... Earthquake, Earthquake Related Slope Failure, Emergency Preparedness, Engineering, Engineering Geology, Faulting, Faults, Flood, Geologic Hazards, Geology, Hazards, Inundation, Landslide, Modeling, Seismic Hazards, Tides, Tsunami, Valdez Quadrangle, geoscientificInformation, Fewer tags Tsunami hazard maps of the Homer and Seldovia areas, Alaska The purpose of this study was to evaluate a potential tsunami risk for communities of Homer and Seldovia in the Kachemak Bay area, Alaska. This report provides guidance to the local emergency managers in tsunami hazard assessment. We used a numerical modeling method to estimate the extent of inundation due to tsunami waves generated by earthquake sources. Our tsunami scenarios included a repeat of the tsunami of the 1964 great Alaska earthquake, as well as a hypothetical tsunami wave generated by a local fault source. We didn't consider landslide-generated tsunamis in this study. Results of numerical modeling combined with historical observations in the region are intended to help local emergency services officials... Tags: Active Fault, Alaska Earthquake 1964, Alaska, State of, Bathymetry, Coastal, All tags... Coastal and River, Cook Inlet, Earthquake, Emergency Preparedness, Engineering, Engineering Geology, Fault Displacement, Faulting, Faults, Flood, Geologic Hazards, Geology, Homer, Inundation, Kenai Peninsula Borough Coastal District, Modeling, Seismic Hazards, Seldovia Quadrangle, Surface, Tides, Tsunami, Volcanoes, geoscientificInformation, Fewer tags Tsunami inundation maps of Whittier and western Passage Canal, Alaska The purpose of this study is to evaluate potential tsunami hazards for the community of Whittier and western Passage Canal area. We numerically model the extent of inundation due to tsunami waves generated from earthquake and landslide sources. Tsunami scenarios include a repeat of the tsunami triggered by the 1964 Great Alaska Earthquake, as well as tsunami waves generated by a hypothetically extended 1964 rupture, a hypothetical Cascadia megathrust earthquake, hypothetical earthquakes in Prince William Sound, and Kodiak asperities of the 1964 rupture. Local underwater landslide and rockslide events in Passage Canal are also considered as credible tsunamigenic scenarios. Results of numerical modeling combined with... Tags: Active Fault, Alaska Earthquake 1964, Bathymetry, Coastal, Coastal and River, All tags... Earthquake, Earthquake Related Slope Failure, Emergency Preparedness, Engineering, Engineering Geology, Fault Displacement, Faulting, Faults, Flood, Geologic Hazards, Geology, Landslide, Modeling, Passage Canal, Rock Avalanche, Rockfall, Seismic Hazards, Slides, Slope, Slope Instability, Tides, Tsunami, Volcanoes, Whittier, geoscientificInformation, Fewer tags Tsunami inundation maps of Sitka, Alaska The purpose of this study is to evaluate potential tsunami hazards for the community of Sitka. We numerically modeled the extent of inundation from tsunami waves generated by near- and far-field tectonic sources. We performed numerical modeling of historic events at Sitka, such as the tsunami triggered by the 1964 Great Alaska Earthquake, and the tsunami waves generated by the recent 2011 Tohoku and 2012 Haida Gwaii earthquakes. Hypothetical tsunami scenarios include variations of the extended 1964 rupture, megathrust earthquakes in the Alaska Peninsula region and in the Cascadia subduction zone, and a thrust earthquake in the region of the Queen Charlotte-Fairweather fault zone. Results of numerical modeling combined... Tags: Active Fault, Alaska Earthquake 1964, Alaska, State of, Baranof Island, Bathymetry, All tags... Coastal, Coastal and River, Earthquake, Emergency Preparedness, Engineering, Engineering Geology, Faulting, Faults, Flood, Geologic Hazards, Geology, Hazards, Inundation, Japonski Island, Modeling, Seismic Hazards, Sitka, Sitka Quadrangle, Sitka Sound, Southeast Alaska, Tides, Tsunami, geoscientificInformation, Fewer tags Updated tsunami inundation maps of the Kodiak area, Alaska Staff from Alaska Earthquake Center, Geophysical Institute and Alaska Division of Geological & Geophysical Surveys evaluated potential potential tsunami hazard for the communities of Kodiak, Womens Bay, and for the U.S. Coast Guard base on Kodiak Island by numerically modeling the extent of inundation from tsunami waves generated by hypothetical earthquake sources. Worst-case hypothetical scenarios are defined by analyzing results of a sensitivity study of the tsunami dynamics related to various slip distributions along the Alaska-Aleutian megathrust. The worst-case scenarios for the Kodiak communities are thought to be the subduction zone earthquakes offshore Kodiak Island with their greatest slip at 5-35 km (3.1-22... Tags: Active Fault, Bathymetry, Coastal, Coastal and River, Earthquake, All tags... Emergency Preparedness, Engineering, Engineering Geology, Environmental, Fault Displacement, Faulting, Faults, Flood, Geologic, Geologic Hazards, Geology, Hazards, Inundation, Kodiak, Kodiak Island, Kodiak Island Borough, Kodiak Quadrangle, Kodiak Station, Land Subsidence, Landslide, Marine Geology, Modeling, Neotectonics, Pillar Mountain, Seismic Hazards, Slope, Subduction, Subsidence, Surface, Tectonics, Tides, Topography, Tsunami, Water, geoscientificInformation, Fewer tags Coastal hazard field investigations in response to the November 2011 Bering Sea storm, Norton Sound, Alaska On November 8, 2011, an extra-tropical cyclone with a low pressure of 945 millibars developed over the Bering Sea and moved northeast across the western coast of Alaska. This large storm brought high winds (gusts of up to 85 mph) to the entire region and a storm surge of approximately 3 meters to parts of Norton Sound. The storm caused extensive flooding in the lower portion of Golovin on the afternoon of November 9, 2011. A team of Alaska Division of Geological & Geophysical Surveys (DGGS) scientists visited Golovin on November 15, 2011, to document peak water levels, runup elevations, and inundation extents caused by this event. These data were combined with photographs taken by local residents during the event... Tags: Bering Straits CRSA Coastal District, Coastal, Coastal Erosion, Flood, Geologic Hazards, All tags... Ice Push, Methods, Nome, Nome Quadrangle, Norton Bay Quadrangle, Norton Sound, Shoreface, Solomon Quadrangle, Storm Surge, Tides, Unalakleet Quadrangle, geoscientificInformation, Fewer tags Tsunami inundation maps of Cordova and Tatitlek, Alaska The purpose of this study is to evaluate potential tsunami hazards for the Prince William Sound communities of Cordova and Tatitlek. We numerically model the extent of inundation from tsunami waves generated by earthquake sources and consider the results in light of historical observations. Tsunami scenarios include a repeat of the tsunami triggered by the 1964 Great Alaska Earthquake as well as tsunami waves generated by the following hypothetical scenarios: An extended 1964 rupture, a Cascadia megathrust earthquake, various earthquakes in Prince William Sound, and a Tohoku-type earthquake in the Gulf of Alaska region. Results of our numerical modeling, combined with historical observations, are designed to provide... Tags: Active Fault, Alaska Earthquake 1964, Bathymetry, Coastal, Coastal and River, All tags... Coastal and River Hazards, Earthquake, Earthquake Related Hazards, Emergency Preparedness, Engineering, Engineering Geology, Faulting, Faults, Flood, Geologic Hazards, Geology, Hazards, Inundation, Modeling, Seismic Hazards, Southcentral Alaska, Tides, Tsunami, geoscientificInformation, Fewer tags