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Tsunami Evacuation Travel Time Map for Humboldt County, CA, 2010, for Bridges Intact and a Fast Walking Speed The travel time map was generated using the Pedestrian Evacuation Analyst model from the USGS. The travel time analysis uses ESRI's Path Distance tool to find the shortest distance across a cost surface from any point in the hazard zone to a safe zone. This cost analysis considers the direction of movement and assigns a higher cost to steeper slopes, based on a table contained within the model. The analysis also adds in the energy costs of crossing different types of land cover, assuming that less energy is expended walking along a road than walking across a sandy beach. To produce the time map, the evacuation surface output from the model is grouped into 1-minute increments for easier visualization. The times in... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Humboldt County, evacuation, hazard preparedness, hazards, tsunamis, All tags... vulnerability, Fewer tags Bathymetric and topographic grid intended for simulations of the 1945 Makran tsunami in Karachi Harbour This digital elevation model provides a tool for calibrating tsunami risk to observations of the 1945 Makran tsunami in Karachi Harbour. The DEM bathymetry is derived from soundings made mainly during the first eight years after the tsunami. Although deficient in portraying intertidal backwaters and upland topography, the DEM accurately depicts the sheltered setting of one of the two tide gauges that recorded the 1945 tsunami. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Geography, Geomorphology, Geophysics, Marine Geology, Seismology, All tags... USGS Science Data Catalog (SDC), bathymetry, earthquakes, elevation, hazard preparedness, oceans, tsunamis, Fewer tags Simulation and visualization of coastal tsunami impacts from the SAFRR tsunami source - Maximum tsunami elevation model of Half Moon Bay, California A high-resolution raster dataset of simulated maximum tsunami elevations in Half Moon Bay, California, based on the Science Application for Risk Reduction (SAFRR) tsunami scenario Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Half Moon Bay, PCMSC, Pacific Coastal and Marine Science Center, All tags... Predictions, State of California, U.S. Geological Survey, USGS, geoscientificInformation, geospatial analysis, geospatial datasets, oceans, society, tsunamis, Fewer tags Tsunami evacuation time map for American Samoa 2009 tsunami inundation zone and slow run speed The travel time map was generated using the Pedestrian Evacuation Analyst model (version 1.0.1 for ArcGIS 10.5) from the USGS (https://geography.wr.usgs.gov/science/vulnerability/tools.html). The travel time analysis uses ESRI's Path Distance tool to find the shortest distance across a cost surface from any point in the hazard zone to a safe zone. This cost analysis considers the direction of movement and assigns a higher cost to steeper slopes, based on a table contained within the model. The analysis also adds in the energy costs of crossing different types of land cover, assuming that less energy is expended walking along a road than walking across a sandy beach. To produce the time map, the evacuation surface... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: American Samoa, evacuation, hazards, modeling, pedestrian, All tags... tsunamis, Fewer tags Tsunami evacuation time map for American Samoa 2009 tsunami inundation zone and fast run speed The travel time map was generated using the Pedestrian Evacuation Analyst model (version 1.0.1 for ArcGIS 10.5) from the USGS (https://geography.wr.usgs.gov/science/vulnerability/tools.html). The travel time analysis uses ESRI's Path Distance tool to find the shortest distance across a cost surface from any point in the hazard zone to a safe zone. This cost analysis considers the direction of movement and assigns a higher cost to steeper slopes, based on a table contained within the model. The analysis also adds in the energy costs of crossing different types of land cover, assuming that less energy is expended walking along a road than walking across a sandy beach. To produce the time map, the evacuation surface... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: American Samoa, evacuation, hazards, modeling, pedestrian, All tags... tsunamis, Fewer tags Tsunami Evacuation Travel Time Map for Del Norte County, CA, 2010, for Bridges Intact and a Fast Walking Speed The travel time map was generated using the Pedestrian Evacuation Analyst model from the USGS. The travel time analysis uses ESRI's Path Distance tool to find the shortest distance across a cost surface from any point in the hazard zone to a safe zone. This cost analysis considers the direction of movement and assigns a higher cost to steeper slopes, based on a table contained within the model. The analysis also adds in the energy costs of crossing different types of land cover, assuming that less energy is expended walking along a road than walking across a sandy beach. To produce the time map, the evacuation surface output from the model is grouped into 1-minute increments for easier visualization. The times in... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Del Norte County, evacuation, hazard preparedness, hazards, tsunamis, All tags... vulnerability, Fewer tags Tsunami Evacuation Travel Time Map for Humboldt County, CA, 2010, for Bridges Removed and a Fast Walking Speed The travel time map was generated using the Pedestrian Evacuation Analyst model from the USGS. The travel time analysis uses ESRI's Path Distance tool to find the shortest distance across a cost surface from any point in the hazard zone to a safe zone. This cost analysis considers the direction of movement and assigns a higher cost to steeper slopes, based on a table contained within the model. The analysis also adds in the energy costs of crossing different types of land cover, assuming that less energy is expended walking along a road than walking across a sandy beach. To produce the time map, the evacuation surface output from the model is grouped into 1-minute increments for easier visualization. The times in... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Humboldt County, evacuation, hazard preparedness, hazards, tsunamis, All tags... vulnerability, Fewer tags Radiocarbon data from coastal wetlands on the Hawaiian islands of Kaua'i, O'ahu, and Hawai'i This portion of the data release presents radiocarbon age data from 66 samples collected from Anahola Valley (Kaua'i), Kahana Valley (O'ahu), and Pololu Valley (Hawai'i). Sample ages were determined by the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility. The data are provided in a comma-delimited spreadsheet (.csv). Categories: Data; Tags: Anahola Valley, CMHRP, Coastal and Marine Hazards and Resources Program, Hawai'i, Hawaiian Islands, All tags... Kahana Valley, Kaua'i, Nonliving resources, O'ahu, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Physical/Chemical Features, Pololu Valley, State of Hawai'i, Substrate, U.S. Geological Survey, USGS, carbon-14 analysis, geoscientificInformation, sediment, sediment transport, tsunamis, tsunamis, Fewer tags Simulation and visualization of coastal tsunami impacts from the SAFRR tsunami source - Maximum tsunami velocity model of Half Moon Bay, California A high-resolution raster dataset of simulated maximum tsunami velocities in Half Moon Bay, California, based on the Science Application for Risk Reduction (SAFRR) tsunami scenario. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Half Moon Bay, PCMSC, Pacific Coastal and Marine Science Center, All tags... Predictions, State of California, U.S. Geological Survey, USGS, geoscientificInformation, geospatial analysis, geospatial datasets, oceans, society, tsunamis, Fewer tags Tsunami evacuation time map for the island of O'ahu, Hawai'i, extreme tsunami evacuation zone and fast walk speed The travel time map was generated using the Pedestrian Evacuation Analyst model from the USGS (https://geography.wr.usgs.gov/science/vulnerability/tools.html). The travel time analysis uses ESRI's Path Distance tool to find the shortest distance across a cost surface from any point in the hazard zone to a safe zone. This cost analysis considers the direction of movement and assigns a higher cost to steeper slopes, based on a table contained within the model. The analysis also adds in the energy costs of crossing different types of land cover, assuming that less energy is expended walking along a road than walking across a sandy beach. To produce the time map, the evacuation surface output from the model is grouped... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Hawaii, Honolulu County, Oahu, evacuation, modeling, All tags... pedestrian, tsunamis, vulnerability, Fewer tags Tsunami Evacuation Travel Time Map for Humboldt County, CA, 2010, for Bridges Intact and a Slow Walking Speed The travel time map was generated using the Pedestrian Evacuation Analyst model from the USGS. The travel time analysis uses ESRI's Path Distance tool to find the shortest distance across a cost surface from any point in the hazard zone to a safe zone. This cost analysis considers the direction of movement and assigns a higher cost to steeper slopes, based on a table contained within the model. The analysis also adds in the energy costs of crossing different types of land cover, assuming that less energy is expended walking along a road than walking across a sandy beach. To produce the time map, the evacuation surface output from the model is grouped into 1-minute increments for easier visualization. The times in... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Humboldt County, evacuation, hazard preparedness, hazards, tsunamis, All tags... vulnerability, Fewer tags Projecting community changes in hazard exposure to support long-term risk reduction: a case study of tsunami hazards in the U.S. Pacific Northwest Tsunamis have the potential to cause considerable damage to communities along the U.S. Pacific Northwest coastline. As coastal communities expand over time, the potential societal impact of tsunami inundation changes. To understand how community exposure to tsunami hazards may change in coming decades, we projected future development (i.e. urban, residential, and rural), households, and residents over a 50-year period (2011-2061) along the Washington, Oregon, and northern California coasts. We created a spatially explicit, land use/land cover, state-and-transition simulation model to project future developed land use based on historical development trends. We then compared our development projection results to tsunami-hazard... Categories: Data; Types: Citation; Tags: Hazards, Land Use Change, Pacific Northwest, Tsunamis, USGS Science Data Catalog (SDC) Pedestrian evacuation times for residents on the island of O'ahu, Hawai'i, for standard and extreme tsunami evacuation zones by community, modeled at three travel speeds (impaired, slow, and fast walk) This dataset contains O'ahu resident count estimates as a function of travel time out of the standard and extreme tsunami-evacuation zones for three different travel speeds (impaired, slow, and fast walk). The data are organized in a manner which permits summarizing or visualizing the data by tsunami-evacuation zone and/or travel time, with communities listed across the top as columns and individual rows representing the number of residents present in the specific evacuation zone/travel time combination. Due to the nature of the methodology used to distribute residential population to structures, resident numbers are not integers. This dataset is intended for use in the U.S. Geological Survey's O'ahu, HI tsunami... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Hawaii, Honolulu County, Oahu, evacuation, modeling, All tags... pedestrian, tsunamis, vulnerability, Fewer tags Pedestrian evacuation times for residents on the islands of American Samoa, for 2009 and predicted maximum tsunami (PMT) inundation zones by village, modeled at four travel speeds (slow walk, fast walk, slow run, and fast run) This dataset contains American Samoa resident count estimates as a function of travel time out of the 2009 and probable maximum tsunami (PMT) inundation zones for four different travel speeds (slow walk, fast walk, slow run, and fast run). The data are organized in a manner which permits summarizing or visualizing the data by village, tsunami-evacuation zone, and/or travel time, with individual rows representing the number of residents present in the specific village/evacuation zone/travel time combination. Due to the nature of the methodology used to distribute residential population to structures, resident numbers are not integers. These data, in tabular format, are intended for use in GIS software applications... Categories: Data; Tags: American Samoa, evacuation, hazards, modeling, pedestrian, All tags... tsunamis, Fewer tags Tsunami evacuation time map for American Samoa 2009 tsunami inundation zone and fast walk speed The travel time map was generated using the Pedestrian Evacuation Analyst model (version 1.0.1 for ArcGIS 10.5) from the USGS (https://geography.wr.usgs.gov/science/vulnerability/tools.html). The travel time analysis uses ESRI's Path Distance tool to find the shortest distance across a cost surface from any point in the hazard zone to a safe zone. This cost analysis considers the direction of movement and assigns a higher cost to steeper slopes, based on a table contained within the model. The analysis also adds in the energy costs of crossing different types of land cover, assuming that less energy is expended walking along a road than walking across a sandy beach. To produce the time map, the evacuation surface... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: American Samoa, evacuation, hazards, modeling, pedestrian, All tags... tsunamis, Fewer tags Core descriptions and sand bed thickness data from Kahana Valley, O'ahu, Hawai'i This portion of the data release contains information on cores that were collected by the U.S. Geological Survey in Kahana Valley, O'ahu, Hawaii in 2015 and 2017. Sites were cored in order to describe wetland stratigraphy and to identify potential tsunami deposits. These cores contain mud, peat, fluvial sands, and marine carbonate sands, reflecting deposition in a variety of coastal environments. PDF files describe twenty-four (24) gouge and ‘Russian’ cores (hand held, side-filling peat augers) that were collected and described in the field. Cores collected in 2017 were described using the Troels-Smith sediment classification scheme (Troels-Smith, 1955; Nelson, 2015). Another pdf file (Kahana_cores_legend.pdf) contains... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Hawaiian Islands, Kahana Valley, Nonliving resources, All tags... O'ahu, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Physical/Chemical Features, State of Hawai'i, Substrate, U.S. Geological Survey, USGS, core analysis, geoscientificInformation, sediment, tsunamis, Fewer tags Vibracore photographs, computed tomography scans, and core-log descriptions from Pololu Valley, Island of Hawaii This portion of the data release contains information on vibracores that were collected by the U.S. Geological Survey in Pololu Valley, Island of Hawai'i in 2014. Five sites were cored in order to describe wetland stratigraphy and to identify potential tsunami deposits. These vibracores contain mud, peat, fluvial sands, and marine volcanic sands, reflecting deposition in a variety of coastal environments. Two (2) pdf files (VC1.pdf, VC2.pdf) describe vibracores that were split, imaged by a line-scanner camera, scanned to generate computed tomagraphic (CT) images, and visually described. A detailed description of the upper 150 cm of VC1 using the Troels-Smith sediment classification scheme (Troels-Smith, 1955; Nelson,... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Hawaiian Islands, Island of Hawai'i, Nonliving resources, All tags... PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Physical/Chemical Features, Pololu Valley, State of Hawai'i, Substrate, U.S. Geological Survey, USGS, core analysis, geoscientificInformation, sediment, tsunamis, Fewer tags Simulation and visualization of coastal tsunami impacts from the SAFRR tsunami source - Maximum tsunami velocity model of Santa Cruz, California A high-resolution raster dataset of simulated maximum tsunami velocities in Santa Cruz, California, based on the Science Application for Risk Reduction (SAFRR) tsunami scenario. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, PCMSC, Pacific Coastal and Marine Science Center, Predictions, All tags... Santa Cruz, State of California, U.S. Geological Survey, USGS, geoscientificInformation, geospatial analysis, geospatial datasets, oceans, society, tsunamis, Fewer tags Hypothetical landslide failure extents for hazard assessment, Barry Arm, western Prince William Sound, Alaska This data release contains extent shapefiles for 16 hypothetical slope failure scenarios for a landslide complex at Barry Arm, western Prince William Sound, Alaska. The landslide is likely active due to debuttressing from the retreat of Barry Glacier (Dai and others, 2020) and sits above Barry Arm, posing a tsunami risk in the event of slope failure (Barnhart and others, 2021). Since discovery of the landslide by a citizen scientist in 2020, kinematic structural elements have been mapped (Coe and others, 2020) and ground-based and satellite synthetic aperture radar (SAR) have been used to track ongoing movement at a high spatial resolution (Schaefer and others, 2020; Schaefer and others, 2022). These efforts have... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, D-Claw, Geomorphology, Marine Geology, Prince William Sound, All tags... USGS Science Data Catalog (SDC), United States, Whittier, geoscientificInformation, geospatial datasets, hazard preparedness, hazards, landslides, mathematical simulation, modeling, shapefile, tsunamis, Fewer tags Limestone boulders and cobbles noted 2009 to 2017 that pertain to sea floods of the past 1,000 years on Anegada, British Virgin Islands This part of the release provides an updated georeferenced catalog of limestone boulders and cobbles pertaining to extreme waves on Anegada, a low Caribbean island perched south of the Puerto Rico Trench. Tabulated are 660 limestone clasts, along with clast dimensions and long-axis trend in many instances. Fewer than one-fifth of the clasts were reported previously in https://doi.org/10.1007/s11069-011-9725-8 and https://doi.org/10.1130/GES01356.1. Most were surveyed in 2017. Categories: Data; Tags: British Virgin Islands, Caribbean Sea, biota, carbon-14 analysis, corals, All tags... geoscientificInformation, hurricanes, limestone, tsunamis, Fewer tags 1 2 3 »