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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.
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This dataset provides shapefiles and tabular data representing river channel geometries measured on photogrammetric imagery and extracted from a photogrammetric digital elevation model (acquired August 2021) along the Totatlanika River in central Alaska. This is a child item of the USGS Data Release: https://doi.org/10.5066/F7X63KF2
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These data present geolocated photographs, GPS tracks, and field-mapped ground failures collected during the USGS reconnaissance of ground failures following the 2018 M7.1 Anchorage Earthquake.
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This dataset provides shapefiles and tabular data representing boulders measured on photogrammetric imagery (acquired August 2021) along the Totatlanika River in central Alaska. This is a child item of the USGS Data Release: https://doi.org/10.5066/10.5066/F7X63KF2
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This data release contains data sets associated with the 2023 50-State National Seismic Hazard Model Update. The 2023 50-State National Seimsic Hazard Model (NSHM) Update includes an update to the NSHMs for the conterminous U.S (CONUS, last updated in 2018), Alaska (AK, last updated in 2007), and Hawaii (last updated in 2001). Data sets include inputs like seismicity catalogs used as input to the smoothed seismicity model and updated induced seismicity zone polygons in the central and eastern U.S., as well as outputs like hazard curves and uniform-hazard ground motion values. Plots of selected data sets are also included. The data sets provided here are primarily for the 2023 CONUS NHSM and 2023 AK NSHM. Additional...
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This data release includes three tables containing cosmogenic beryllium-10 and aluminum-26 concentrations and related data from samples collected at four sites in central Alaska in 2020, prepared in 2022 at the University of Vermont (UVM), and measured at the Purdue Rare Isotope Measurement lab (PRIME) in 2022. The file "burialAge_siteLocations_centralAK_bender.csv" contains site locations in the NAD83 reference frame, and burial ages computed from raw data contained in the other files. All files are linked by the site_id_short field.
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This dataset provides scaled and geotagged digital photographs of river sediment acquired in August 2021 at 21 sites along the Totatlanika River in central Alaska, and tabular sediment grain size data derived from the photographs. This is a child item of the USGS Data Release: https://doi.org/10.5066/F7X63KF2
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This data package includes four child items with data about sediment size and transport on the Totatlanika River, northern Alaska Range. Child Item 1: "Grain Size Data Collected Along the Totatlanika River, Alaska, August 2021". Scaled and geotagged digital photographs of river sediment and tabular sediment grain size data derived from the photographs. Child Item 2: "Boulder Size Data Collected Along the Totatlanika River, Alaska, August 2021". Shapefiles and tabular data representing boulders measured on photogrammetric imagery. Child Item 3: "Channel Geometry Data Collected Along the Totatlanika River, Alaska, August 2021". Shapefiles and tabular data representing river channel geometries measured on photogrammetric...
This dataset provides a digital elevation model derived from airborne fodar data acquired in 2021 on August 31 over the Totatlanika River in central Alaska. The term "fodar" is a portmanteau of foto and lidar, coined by Matt Nolan, which describes a method of quantifying the color and elevation of Earth’s surface via airborne small-format digital camera photography.
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This dataset provides shapefiles and tables of water flow data (acquired in the field August 2021) and inputs for calculating annual exceedance probability discharges along the Totatlanika River in central Alaska. This is a child item of the USGS Data Release: https://doi.org/10.5066/F7X63KF2
    map background search result map search result map Field reconnaissance of ground failure triggered by shaking during the 2018 M7.1 Anchorage, Alaska, earthquake Data Release for the 2023 U.S. 50-State National Seismic Hazard Model - Overview Central Alaska Cosmogenic Isotope Burial Age Data Collected 2020-2022 Radiocarbon Data from Coastal Environments on Montague Island, Alaska Sediment Transport Data from the Totatlanika River, Alaska, August 2021 Grain Size Data Collected Along the Totatlanika River, Alaska, August 2021 Boulder Size Data Collected Along the Totatlanika River, Alaska, August 2021 Channel Geometry Data Collected Along the Totatlanika River, Alaska, August 2021 Water Discharge Data Collected and Modeled Along the Totatlanika River, Alaska, August 2021 Grain Size Data Collected Along the Totatlanika River, Alaska, August 2021 Water Discharge Data Collected and Modeled Along the Totatlanika River, Alaska, August 2021 Sediment Transport Data from the Totatlanika River, Alaska, August 2021 Radiocarbon Data from Coastal Environments on Montague Island, Alaska Field reconnaissance of ground failure triggered by shaking during the 2018 M7.1 Anchorage, Alaska, earthquake Central Alaska Cosmogenic Isotope Burial Age Data Collected 2020-2022 Data Release for the 2023 U.S. 50-State National Seismic Hazard Model - Overview