Survey of geology, geologic materials, and geologic hazards in proposed access corridors in selected quadrangles, Alaska

As part of the Department of Natural Resources (DNR) effort to make final recommendations of federal land parcels to be considered for selection by the State of Alaska according to provisions of the Statehood Act, a decision was made to identify and evaluate potential access corridors. Corridor maps were compiled for a total of 78 quadrangles throughout Alaska. This map suite shows relevant geologic information at a scale of 1:250,000 for 10-mile-wide corridors straddling centerlines for proposed access routes throughout Alaska. The maps are based on geologic data compiled from existing, published mapping. Each compiled corridor geology map was used to derive maps of potential construction materials, data quality,...

Tags: Alaska, State Of, Ambler River Quadrangle, Anchorage Quadrangle, Aufeis, Avalanche, All tags... Baird Mountains Quadrangle, Barrow Quadrangle, Barter Island Quadrangle, Beechey Point Quadrangle, Bendeleben Quadrangle, Bering Glacier Quadrangle, Bethel Quadrangle, Bettles Quadrangle, Black River Quadrangle, Bradfield Canal Quadrangle, Candle Quadrangle, Chandalar Quadrangle, Chandler Lake Quadrangle, Charley River Quadrangle, Chignik Quadrangle, Circle Quadrangle, Cold Bay Quadrangle, Construction Materials, Cordova Quadrangle, De Long Mountains Quadrangle, Demarcation Point Quadrangle, Dillingham Quadrangle, Eagle Quadrangle, Engineering, Fairbanks Quadrangle, Flaxman Island Quadrangle, Geologic Materials, Geology, Glacier Outburst Flood, Harrison Bay Quadrangle, Hazards, Healy Quadrangle, Holy Cross Quadrangle, Howard Pass Quadrangle, Hughes Quadrangle, Icing, Iditarod Quadrangle, Ikpikpuk River Quadrangle, Iliamna Quadrangle, Jokulhlaup, Juneau Quadrangle, Kantishna River Quadrangle, Karluk Quadrangle, Kateel River Quadrangle, Killik River Quadrangle, Lake Clark Quadrangle, Lime Hills Quadrangle, Livengood Quadrangle, Lookout Ridge Quadrangle, McGrath Quadrangle, Meade River Quadrangle, Medfra Quadrangle, Melozitna Quadrangle, Misheguk Mountain Quadrangle, Mount Katmai Quadrangle, Mount McKinley Quadrangle, Mount Michelson Quadrangle, Naknek Quadrangle, Naled, Noatak Quadrangle, Norton Bay Quadrangle, Nulato Quadrangle, Ophir Quadrangle, Permafrost, Petersburg Quadrangle, Philip Smith Mountains Quadrangle, Port Moller Quadrangle, Railroad, Ruby Quadrangle, Russian Mission Quadrangle, Sagavanirktok Quadrangle, Selawik Quadrangle, Shungnak Quadrangle, Sleetmute Quadrangle, Solomon Quadrangle, Survey Pass Quadrangle, Taku River Quadrangle, Talkeetna Quadrangle, Tanana Quadrangle, Taylor Mountains Quadrangle, Teshekpuk Quadrangle, Transportation Corridor, Tyonek Quadrangle, Ugashik Quadrangle, Umiat Quadrangle, Unalakleet Quadrangle, Utukok River Quadrangle, Wiseman Quadrangle, 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 for the city of Sand Point, Alaska

Staff from Alaska Earthquake Center, Geophysical Institute and Alaska Division of Geological & Geophysical Surveys evaluated potential tsunami hazards for the city of Sand Point, on Popof Island in the Shumagin Islands archipelago. We numerically modeled the extent of inundation from tsunami waves generated by local and distant earthquake sources. We considered the results in light of historical observations. The worst-case scenarios are defined by analyzing results of the sensitivity study of the tsunami dynamics with respect to different slip distributions along the Aleutian megathrust. For the Sand Point area, the worst-case scenarios are thought to be thrust earthquakes in the Shumagin Islands region with magnitudes...

Tags: Active Fault, Alaska Earthquake 1964, Aleutian Islands, Bathymetry, Coastal, All tags... Coastal and River, Earthquake, Emergency Preparedness, Engineering, Engineering Geology, Fault Displacement, Faulting, Faults, Flood, Geologic Hazards, Geology, Hazards, Humboldt Harbor, Inundation, Land Subsidence, Modeling, Popof Island, Raster Image, Sand Point, Seismic Gap, Seismic Hazards, Seismology, Shumagin Islands, Surface, Topography, Tsunami, Water, geoscientificInformation, Fewer tags

Engineering-geologic map of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska

During 2009, the Alaska Division of Geological & Geophysical Surveys continued a program, begun in 2006, of reconnaissance mapping of surficial geology in the proposed natural-gas pipeline corridor through the upper Tanana River valley. The study area is a 12-mi-wide (19.3-km-wide) area that straddles the Alaska Highway from the western boundaries of the Tanacross B-3 and A-3 quadrangles near Tetlin Junction eastward to the eastern boundaries of the Nabesna D-1 and C-1 quadrangles along the Canada border. Mapping during 2008-2009 in the Tanacross and Nabesna quadrangles linked with the mapping completed in the Tanacross, Big Delta and Mt. Hayes quadrangles in 2006-2008. Surficial geology was initially mapped in...

Tags: Aeolian, Alaska Highway Corridor, Alaska Pipeline, Alaska, State of, Beaver Creek, All tags... Canada, Chisana River, Engineering, Engineering Geology, Eolian, Gasline, Geologic Hazards, Geologic Map, Geology, Hazards, Landslide, Landslide Deposit, Loess, Midway Lake, Nabesna, Nabesna Quadrangle, Nabesna River, Natural Gas, Northway, Northway Junction, Periglacial Slope Failure, Permafrost, Pipeline, Proposed Natural Gas Pipeline, Retransported Loess, Scottie Creek, Tanacross Quadrangle, Tanana Basin, Tanana River, Taylor Highway, Tetlin, Tetlin Junction, Tetlin National Wildlife Refuge, Thawing Permafrost, Translational Landslide, Transportation Corridor, Unconsolidated Deposits, geoscientificInformation, Fewer tags

Historically active volcanoes of Alaska

This data lists the historically active volcanoes of Alaska and the year of the last major eruptive event. The volcanoes listed meet at least one of the following criteria since 1700 CE: (1) documented, unquestioned eruption, or (2) a strongly suspected eruption, often an eruption documented in the historical account with very little information (current geologic knowledge must not contradict the eruption account), or (3) persistent (usually on the order of decades, but certainly longer than several months) fumaroles, with temperatures (where measured) within ~10 degrees C of the boiling point, or (4) significant, measured, volcanic-related, non-eruptive deformation, (5) documented earthquake swarm with strongly...

Tags: Active Volcanoes, Alaska Peninsula, Alaska Statewide Maps, Alaska, State of, Aleutian Arc, All tags... Aleutian Islands, Coastal and River, Coastal and River Hazards, Geologic Hazards, Geology, Hazards, Historic Eruption, Volcanic, Volcanic Eruption, Volcano Hazards, Volcanoes, Volcanology, geoscientificInformation, Fewer tags

Quaternary faults and folds in Alaska: A digital database

This dataset contains information and locations on faults and associated folds in Alaska that are believed to be sources of M>6 earthquakes during the Quaternary (the past 1,600,000 years). The dataset is intended to part of the USGS archive for historic and ancient earthquake sources used in current and future probabilistic seismic-hazard analyses. This dataset presents a single source that summarizes important information on paleoseismic (ancient earthquakes) parameters including, age of most recent deformation, slip rate, slip sense dip direction, and accuracy of original mapping. These data are compiled from hundreds of journal articles, maps, theses, and other documents, as referenced herein. The geospatial...

Tags: Active Fault, Alaska, State of, Earthquake, Faulting, Faults, All tags... Folds, Hazards, Paleoseismology, geoscientificInformation, Fewer tags

High-resolution lidar data for infrastructure corridors, Valdez Quadrangle, Alaska

In advance of design, permitting, and construction of a pipeline to deliver North Slope natural gas to out-of-state customers and Alaska communities, the Division of Geological & Geophysical Surveys (DGGS) has acquired LiDAR (Light Detection and Ranging) data along proposed pipeline routes, nearby areas of infrastructure, and regions where significant geologic hazards have been identified. LiDAR data will serve multiple purposes, but have primarily been collected to (1) evaluate active faulting, slope instability, thaw settlement, erosion, and other engineering constraints along proposed pipeline routes, and (2) provide a base layer for the state-federal GIS database that will be used to evaluate permit applications...

Tags: Aerial Geology, Alaska, State of, Digital Elevation Model, Digital Surface Model (DSM), Geologic Hazards, All tags... Geology, Geomorphology, Hazards, LiDAR, LiDAR LAS File Format, Point Cloud Data, Remote Sensing, Slope Instability, Trans-Alaska Pipeline, Valdez Quadrangle, geoscientificInformation, Fewer tags

Bruce Mine Division Plan in Case of Fire or Explosion

ADMMR map collection: Bruce Mine Division Plan in Case of Fire or Explosion; 21 x 30 in.

Categories: Data; Tags: 1970s, Arizona, Bagdad area physiographic area, Bruce, Copper, Sulfide, All tags... Dataset, Gold, Lawler Mines, Old Dick, Old Dick metallic mineral dist., Silver, United States, Yavapai County, Zinc, Sulfide, geoscientificInformation, hazards, maps and atlases, mine buildings, mineral resources, mining and quarrying, mining hazards, plans, subsurface maps, Fewer tags

ADMMR mining collection file: More Sand

This location is part of the Arizona Mineral Industry Location System (AzMILS), an inventory of mineral occurences, prospects and mine locations in Arizona. Coconino362 is located in T23N R7E Sec 24 S2 in the Sunset Crater West - 7.5 Min quad. This collection consists of various reports, maps, records and related materials acquired by the Arizona Department of Mines and Mineral Resources regarding mining properties in Arizona. Information was obtained by various means, including the property owners, exploration companies, consultants, verbal interviews, field visits, newspapers and publications. Some sections may be redacted for copyright. Please see the access statement.

Categories: Data; Tags: 1970s, 1980s, 1990s, 2000s, Abrasive, Pumice, All tags... Arizona, Coconino, Crown Claims, Dataset, Flagstaff physiographic area, Moon Sand, Pumice, Lt Wt Aggreg, San Francisco Volcanic Field, Sugarloaf Mtn. Area Pumice, Sunset Crater West - 7.5 Min, T23N R7E Sec 24 S2, United States, chemical analysis, geoscientificInformation, gravel deposits, hazards, image collections, mining and quarrying, mining hazards, natural resource assessment, natural resource management, natural resources, news releases, reports, rocks and deposits, topographic maps, Fewer tags

Summary of proposed changes to geologic inputs for the U.S. National Seismic Hazard Model (NSHM) 2023, version 1.0

This data release documents proposed updates to geologic inputs (faults) for the upcoming 2023 National Seismic Hazard Model (NSHM). This version (1.0) conveys differences between 2014 NSHM fault sources and those recently released in the earthquake geology inputs for the U.S. National Seismic Hazard Model (NSHM) 2023, version 1.0 data release by Hatem et al. (2021). A notable difference between the 2014 and 2023 datasets is that slip rates are provided at points for 2023 instead of generalized along the entire fault section length as in 2014; consequently, slip rates are not provided for fault sections in the draft 2023 dataset. Geospatial data (shapefile, kml and geojson) are provided in this data release with...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, California, Colorado, Idaho, Nevada, All tags... New Mexico, Oregon, Texas, USGS Science Data Catalog (SDC), Utah, Washington, Wyoming, hazards, Fewer tags

High-resolution spatial water-quality and discrete phytoplankton data, Owasco Lake, Seneca Lake, and Skaneateles Lake, Finger Lakes Region, New York, 2018-2019

From August 2018 to October 2019, the U.S. Geological Survey collected spatially high-resolution water quality data as part of five shoreline synoptic surveys around the perimeters of Owasco, Seneca, and Skaneateles Lakes within the Finger Lakes Region of New York. Water-quality data were collected just below water surface utilizing YSI EXO2 multiparameter sondes and portable nitrate sensors paired with real-time GPS data as part of a HABs monitoring program in the Finger Lakes. In October 2019, water-quality data collection was paired with discrete phytoplankton grab samples on Owasco Lake and Seneca Lake. Phytoplankton grab samples were collected just below water surface with a peristaltic pump at twelve locations...

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquatic Biology, Contaminants, HABS, Finger Lakes, Limnology, New York, All tags... Owasco Lake, Seneca Lake, Skaneateles Lake, Surface-Water Quality Monitoring, USGS Science Data Catalog (SDC), United States, Water Quality, Water Quality, Water Resources, algae, algal blooms, chlorophyll, class, continuously-measured, cyanobacteria, dissolved oxygen, division, family, fluorescent dissolved organic matter (fDOM), freshwater (surface), genus, hazards, lake ecosystems, limnology, nitrate, nutrient content (water), order, oxygen content (water), phycocyanin, phycology, phytoplankton, spatial, species, specific conductance, surface water quality, synoptic, taxa, taxonomy, turbidity, water pH, water temperature, Fewer tags

Owasco Lake, New York spatial water-quality data, June 26 and October 8, 2019

This child item data set provides high-resolution, nearshore, spatial water-quality data collected from Owasco Lake, New York, on June 26 and October 8, 2019. All data are reported as raw measured values. Continuous water-quality monitors were mounted to a boat at approximately 0.5-meters below the water surface and used to measure nitrate, chlorophyll fluorescence (fChl), fluorescent dissolved organic matter (fDOM), dissolved oxygen, specific conductance, phycocyanin fluorescence (fPC), turbidity, pH, and temperature.

Categories: Data; Tags: Contaminants, HABS, Finger Lakes, New York, Owasco Lake, Surface-Water Quality Monitoring, All tags... United States, Water Quality, algae, algal blooms, chlorophyll fluorescence (fChl), continuously-measured, cyanobacteria, dissolved oxygen, fluorescent dissolved organic matter (fDOM), freshwater (surface), hazards, limnology, nitrate, nutrient content (water), oxygen content (water), phycocyanin fluorescence (fPC), spatial, specific conductance, surface water quality, synoptic, turbidity, water pH, water temperature, Fewer tags

Model parameter input files to compare effects of stream discharge scenarios on sediment deposition and concentrations around coral reefs off west Maui, Hawaii

This dataset consists of physics-based Delft3D model and Delwaq model input files used in modeling sediment deposition and concentrations around the coral reefs of west Maui, Hawaii. The Delft3D models were used to simulate waves and currents under small (SC1) and large (‘SC2’) wave conditions for current stream discharge (‘Alt1’) and stream discharge with watershed restoration (‘Alt3’). Delft3D model results were subsequently used as forcing conditions for Delwaq models to simulate sediment transport and dispersion. The Delwaq models were used to simulate sediment transport and concentrations under the same two wave and stream discharge scenarios. The Delwaq models were run using forcing conditions generated by...

Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Environmental Health, Geography, Geomorphology, All tags... Hydrology, Island of Maui, Land Use Change, Marine Geology, PCMSC, Pacific Coastal and Marine Science Center, Sedimentology, State of Hawaii, U.S. Geological Survey, USGS, coastal processes, coastal processes, coral reefs, geoscientificInformation, hazards, numerical modeling, oceans, reef, water circulation, water column features, waves, Fewer tags

Structure-from-motion point cloud of Mud Creek, Big Sur, California, 2017-05-27

Presented here is a point cloud collected by the U.S. Geological Survey (USGS) using an oblique plane-mounted camera system, covering the area of the Mud Creek landslide on California State Route 1 (SR1), Mud Creek, Big Sur, California. The point cloud is referenced to previously published lidar data and contains RGB information as well as XYZ. Point cloud coordinates are in NAD83 UTM Zone 10 meters. Imagery was collected with a Nikon D800 camera in RAW format and processed using structure-from-motion photogrammetry with Agisoft PhotoScan version 1.2.8 through 1.3.2. Pointclouds were clipped to an AOI using LASTools. The AOI was created from a KMZ in Google Earth and transformed to a shapefile using ArcMap 10.5.

Tags: Bathymetry and Elevation, Big Sur, CMHRP, California, Cape San Martin, All tags... Central California Coastal, Coastal and Marine Hazards and Resources Program, Monterey, PCMSC, Pacific Coastal and Marine Science Center, U.S. Geological Survey, USGS, United States, Villa Creek, aerial and satellite photography, aerial photography, agents of coastal change, anthropogenic agents of coastal change, coastal change hazards topics, coastal landslides, coastal landsliding, coastal processes, coastal processes, coastal sediment budget, coastal zone management, effects of coastal change, elevation, geomorphology, geoscientificInformation, hazards, hazards and disasters, human responses to coastal change, image analysis, image collections, imageryBaseMapsEarthCover, landslides, remote sensing, topography, transportation, Fewer tags

EnviroAtlas - Clean and Plentiful Water Metrics for the Conterminous United States

This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The Clean and Plentiful Water category in this web service includes layers illustrating the ecosystems and natural resources that filter and regulate water, the need or demand for clean and plentiful water, the impacts associated with water quality, and factors that place stress on water quality and supply. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States. Additional descriptive information about each attribute in this web service is located within each web...

Types: Citation; Tags: 12-digit HUCs, Agriculture, Air, Alabama, Alaska, All tags... Arizona, Arkansas, Austin, TX, Biodiversity, Biology, Biophysical, Biota, Boundaries, California, Census Block Groups, Cleanup, Climate, Colorado, Communities, Compliance, Connecticut, Conservation, Contaminant, Delaware, Demand for Ecosystem Services, Demographics, Detroit, MI, Disaster, Drinking Water, Drivers of Change - Ecosystem Services, Durham, NC, Ecology, Economy, Ecosystem, Ecosystem, Ecosystem Services, Elevation, Emergency, Endangered, Energy, EnviroAtlas, Environment, Environment, Environmental Atlas, Environmental Justice, Estuary, Exposure, Facilities, Florida, Food, Fresno, CA, Georgia, Green Infrastructure, Green Space, Ground Water, Habitat, Hawaii, Hazards, Health, Human, Human Well-being, Idaho, Illinois, Impact, Imperiled, Indiana, Indicator, Indoor Air, Inspections, Iowa, Kansas, Kentucky, Land, Land Cover, Louisiana, Maine, Management, Marine, Maryland, Massachusetts, Michigan, Milwaukee, WI, Minnesota, Mississippi, Missouri, Modeling, Monitoring, Montana, Natural Resources, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Permits, Pesticides, Phoenix, AZ, Portland, ME, Portland, OR, Potential for Change - Ecosystem Services, Protected Lands, Quality, Radiation, Recreation, Regulatory, Remediation, Response, Rhode Island, Riparian, Risk, Sites, Society, Soils, South Carolina, South Dakota, Spills, Structure, Supply of Ecosystem Services, Surface Water, Sustainability, Tampa Bay, FL, Tennessee, Texas, Threatened, Toxics, Transportation, United States, Utah, Utilities, Vermont, Virginia, Washington, Washington DC, Waste, Water, West Virginia, Wetlands, Wisconsin, Wyoming, environment, Fewer tags

Wave Height Data for the Gulf of Mexico

The goal of this project is to provide a preliminary overview, at a National scale, the relative susceptibility of the Nation's coast to sea- level rise through the use of a coastal vulnerability index (CVI). This initial classification is based upon the variables geomorphology, regional coastal slope, tide range, wave height, relative sea-level rise and shoreline erosion and accretion rates. The combination of these variables and the association of these variables to each other furnish a broad overview of regions where physical changes are likely to occur due to sea-level rise.

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Alabama, Beach, Beach Erosion, Coastal Geomorphology, Coastal Hazards, All tags... Coastal processes, Erosion, Florida, Gulf Coast, Gulf of Mexico, Gulf of Mexico, Hazards, Louisiana, Misissippi, Sea-Level, Sea-Level Rise, Shoreline, Shoreline Change, Slope, Texas, Tide Range, Wave Height, inundation, sea level rise, sea level trends, tides, waves, wind, Fewer tags

Radiocarbon Data from Coastal Environments on Montague Island, Alaska

This dataset consists of sample descriptions and radiocarbon age data from coastal environments on Montague Island, Alaska, analyzed at the National Ocean Sciences Accelerator Mass Spectrometry Facility.

Tags: Alaska, Biota, Carbon-14 analysis, Coastal processes, Earth science, All tags... Earthquakes, Geology, GeoscientificInformation, Hazards, Montague Island, Prince William Sound, Tectonic processes, USGS:ASC604, Fewer tags

EnviroAtlas - Food, Fuel, and Materials Metrics for Conterminous United States

This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The Food, Fuel, and Materials category in this web service includes layers illustrating the ecosystems and natural resources that provide or support the production of food, fuel, or other materials, the need or demand for these items, the impacts associated with their presence and accessibility, and factors that place stress on the natural environment's capability to provide these benefits. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States. Additional descriptive...

Types: Citation; Tags: 12-digit HUCs, Agriculture, Air, Alabama, Alaska, All tags... Arizona, Arkansas, Austin, TX, Biodiversity, Biology, Biophysical, Biota, Boundaries, California, Census Block Groups, Cleanup, Climate, Colorado, Communities, Compliance, Connecticut, Conservation, Contaminant, Delaware, Demand for Ecosystem Services, Demographics, Detroit, MI, Disaster, Drinking Water, Drivers of Change - Ecosystem Services, Durham, NC, Ecology, Economy, Ecosystem, Ecosystem, Ecosystem Services, Elevation, Emergency, Endangered, Energy, EnviroAtlas, Environment, Environment, Environmental Atlas, Environmental Justice, Estuary, Exposure, Facilities, Florida, Food, Fresno, CA, Georgia, Green Infrastructure, Green Space, Ground Water, Habitat, Hawaii, Hazards, Health, Human, Human Well-being, Idaho, Illinois, Impact, Imperiled, Indiana, Indicator, Indoor Air, Inspections, Iowa, Kansas, Kentucky, Land, Land Cover, Louisiana, Maine, Management, Marine, Maryland, Massachusetts, Michigan, Milwaukee, WI, Minnesota, Mississippi, Missouri, Modeling, Monitoring, Montana, Natural Resources, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Permits, Pesticides, Phoenix, AZ, Portland, ME, Portland, OR, Potential for Change - Ecosystem Services, Protected Lands, Quality, Radiation, Recreation, Regulatory, Remediation, Response, Rhode Island, Riparian, Risk, Sites, Society, Soils, South Carolina, South Dakota, Spills, Structure, Supply of Ecosystem Services, Surface Water, Sustainability, Tampa Bay, FL, Tennessee, Texas, Threatened, Toxics, Transportation, United States, Utah, Utilities, Vermont, Virginia, Washington, Washington DC, Waste, Water, West Virginia, Wetlands, Wisconsin, Wyoming, environment, Fewer tags

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

Pedestrian tsunami evacuation results for two tsunami-inundation zones (2009 and probable maximum tsunami (PMT)) and four travel speeds (slow walk, fast walk, slow run, and fast run) for American Samoa

This data release is comprised of a set of eight time travel map shapefiles (two tsunami inundation zones and four travel times) for use in GIS software applications and two population exposure by travel time tables (residents and nonresidences) for use in GIS software applications and other standalone spreadsheet applications. 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...

Tags: American Samoa, Geography, Land Use Change, USGS Science Data Catalog (SDC), evacuation, All tags... hazards, modeling, pedestrian, tsunamis, Fewer tags