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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Alaska Division of Geological & Geophysical Surveys Nicolsky, D.J. Koehler, R.D. Combellick, R.A. Hansen, R.A. Salisbury, J.B. Tag Types Theme (3) Place (3) Tag Schemes Alaska Division of Geological & Geophysical Surveys (3) ISO 19115 Topic Category (3) View Results as: JSON ATOM CSV

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 for Juneau, Alaska In this report, we evaluate potential tsunami hazards for the southeastern Alaska community of Juneau and numerically model the extent of inundation from tsunami waves generated by tectonic and submarine landslide sources. We calibrate our tsunami model by numerically simulating the 2011 Tohoku tsunami at Juneau and comparing our results to instrument records. Analysis of calculated and observed water level dynamics for the 2011 event in Juneau reveals that the model underestimates the observed wave heights in the city by a factor of two, likely due to complex tsunami-tide interactions. We compensate for this numerical underestimation by doubling the coseismic slip of the hypothetical tsunami sources in our models.... Tags: Bathymetry, Berners Bay, Coastal, Douglas, Douglas Island, All tags... Eagle River, Earthquake, Engineering, Environmental, Faults, Favorite Channel, Flood, Fritz Cove, Geologic, Geology, Geotechnical, Hazards, Inundation, Juneau, Landslide, Marine, Mendenhall River, Modeling, Regional, Rockfall, Saginaw Channel, Sediment, Sedimentation, Sheep Creek, Slides, Slope, Slump, Southeast Alaska, Subduction, Subsidence, Surface, Taku Inlet, Tectonics, Topography, Tsunami, Uplift, Water, 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