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Lidar-derived elevation models for the Grewingk Glacier 1967 landslide scar, Alaska, collected June 3, 2019
The Alaska Division of Geological & Geophysical Surveys (DGGS) used lidar to produce digital terrain models (DTM), a digital surface model (DSM), and an intensity model for evaluations of the Grewingk Glacier 1967 landslide scar located above the proglacial lake on the north-facing flank of the glacial valley in Kachemak Bay State Park, Alaska. DGGS capitalized on a data collect (Salisbury and others, 2021) conducted in Homer the same day for a landslide hazard resiliency project. Lidar and Global Navigation Satellite System (GNSS) data were collected on June 3, 2019, and subsequently processed using TerraSolid and ArcGIS. The Alaska Division of Mining, Land, & Water (DMLW) Survey Section conducted a targeted Ground Control Survey for the Homer project on June 19-20, 2019, and we use these ground control data for the Grewingk Glacier dataset across Kachemak Bay. These data are being released as a Raw Data File with an open end-user license. All files can be downloaded free of charge from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30599).
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Lidar-derived elevation for Maynard Mountain, Southcentral Alaska, collected July 29, 2022
공공데이터포털
Lidar-derived elevation for Maynard Mountain, Southcentral Alaska, collected July 29, 2022, Raw Data File 2024-11, provides aerial lidar-derived classified point cloud data, a digital surface model (DSM), a digital terrain model (DTM), and an intensity model of Maynard Mountain near Whittier, Southcentral Alaska, during leaf-on conditions. The survey provides snow-free surface elevations for use in landslide hazard assessment. Ground control data and aerial lidar data were collected July 29, 2022, and subsequently merged and processed using a suite of geospatial processing software. This data collection is released as a Raw Data File with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/31173).
Lidar-derived elevation data for Portage, southcentral Alaska, collected October 15, 2020
공공데이터포털
Lidar-derived elevation data for Portage, southcentral Alaska, collected October 15, 2020, Raw Data File 2024-7, provides aerial lidar-derived classified point cloud data, a digital surface model (DSM), a digital terrain model (DTM), and an intensity model of slopes above Portage Glacier, Southcentral Alaska, during leaf-off conditions. The survey provides snow-free surface elevations for use in landslide and avalanche hazard assessments. Aerial lidar data were collected on October 15, 2020, and ground control data were collected on November 13, 2020, and subsequently merged and processed using a suite of geospatial processing software. This data collection is released as a Raw Data File with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/31160).
Lidar-derived elevation data for Columbia Glacier terminus and adjacent slope, Southcentral Alaska, collected September 18, 2022
공공데이터포털
Lidar-derived elevation data for Columbia Glacier terminus and adjacent slope, Southcentral Alaska, collected September 18, 2022, Raw Data File 2023-16, provides an aerial lidar derived classified point cloud, a digital terrain model (DTM), and an intensity model of the unstable slope at the terminus of Columbia Glacier, located in Prince William Sound in Southcentral Alaska. Aerial and ground control data were collected on September 18, 2022, and subsequently processed in a suite of geospatial processing software. These data support a paraglacial rock slope destabilization study at Columbia Glacier and will be used to assess and characterize an ongoing landslide hazard. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/31032).
Lidar-derived surface elevation data for Glen Alps, Southcentral Alaska, collected August 17, 2024
공공데이터포털
Lidar-derived surface elevation data for Glen Alps, Southcentral Alaska, collected August 17, 2024, Raw Data File 2025-19, releases classified point cloud, digital surface model (DSM), digital terrain model (DTM), and intensity model of the Glen Alps area, Municipality of Anchorage (MOA), Southcentral Alaska, during leaf-on conditions. The survey provides summer 'snow off' surface elevations to derive snow depth information using a separately collected winter 'snow-on' elevation surface. Ground control data were collected on March 25, 2024, and aerial lidar data were collected on August 17, 2024, and subsequently merged and processed using a suite of geospatial processing software. This data collection is released as a Raw Data File with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/31704).
Lidar-derived elevation data for Goodwin Glacier, Southcentral Alaska, collected September 22, 2023
공공데이터포털
Lidar-derived elevation data for Goodwin Glacier, Southcentral Alaska, collected September 22, 2023, Raw Data File 2025-7, releases classified point cloud, digital terrain model (DTM), and an intensity model of Goodwin Glacier, Southcentral Alaska, during minimum snow cover conditions. The survey provides snow-free surface elevations for use in change detection following the landslide that occurred on August 10, 2023, covering a large portion of Goodwin Glacier. Aerial lidar data were collected September 22, 2023, and subsequently processed using a suite of geospatial processing software. This data collection is released as a Raw Data File with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/31519).
High resolution lidar-derived elevation data for Barry Arm landslide, Southcentral Alaska, June 26, 2020
공공데이터포털
The Alaska Division of Geological & Geophysical Surveys (DGGS) used aerial lidar to produce a classified point cloud and high-resolution digital terrain model (DTM), digital surface model (DSM), and intensity model of the Barry Arm landslide, northwest Prince William Sound, Alaska, during near snow-free ground conditions on June 26, 2020. The survey's goal is to provide high quality and high resolution (0.10 m) elevation data to assess potential landslide movement. Aerial lidar and ground control data were collected on June 26, 2020, and subsequently processed in Terrasolid and ArcGIS. Ground control was collected on June 26, 2020, as well. This data collection is released as a Raw Data File with an open end-user license. All files can be downloaded free of charge from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30593).
Lidar-derived elevation data for Kwigillingok, Southwest Alaska, collected August 18, 2021
공공데이터포털
Lidar-derived elevation data for Kwigillingok, Southwest Alaska, collected August 18, 2021, Raw Data File 2023-19, provides aerial lidar derived classified point cloud, digital surface model (DSM), digital terrain model (DTM), and intensity model of Kwigillingok, Southwest Alaska (cover figure) during leaf-on ground conditions. The survey provides snow-free surface elevation data for assessing coastal erosion and flooding hazards. Ground control data and aerial lidar data were collected on August 18, 2021, and subsequently processed using a suite of geospatial processing software. This data collection is released as a Raw Data File with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/31035).
Lidar-derived elevation data for Speel Arm, Southeast Alaska, collected September 7, 2019
공공데이터포털
The Alaska Division of Geological & Geophysical Surveys (DGGS) used aerial lidar to produce a classified point cloud, digital surface model (DSM), digital terrain model (DTM), and intensity model of a mountain slope adjacent to Speel Arm near Port Snettisham, Southeast Alaska, during near snow-free ground conditions on September 7, 2019. The survey provides snow-free surface elevations for deriving snow depth distribution models with repeat surveys during snow-covered conditions. Aerial lidar and ground control data were collected on September 7, 2019, and subsequently processed in a suite of geospatial processing software. These products are released as a Raw Data File with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30730).
Lidar-derived elevation data for Barry Arm, Southcentral Alaska, collected September 19, 2023
공공데이터포털
Lidar-derived elevation data for Barry Arm, Southcentral Alaska, collected September 19, 2023, Raw Data File 2025-8, releases classified point cloud, digital terrain model (DTM), and an intensity model of Barry Arm, Southcentral Alaska, during leaf-on conditions. The survey provides snow-free surface elevations for use in landslide change detection. Aerial lidar data were collected on September 19, 2023, and ground control data were collected on August 2, 2021, and May 5, 2023, and subsequently merged and processed using a suite of geospatial processing software. This data collection is released as a Raw Data File with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/31520).
Lidar-derived elevation data for land near Grewingk Glacier and Halibut Cove Lagoon, Southcentral Alaska, collected October 12-13, 2021
공공데이터포털
Lidar-derived elevation data for land near Grewingk Glacier and Halibut Cove Lagoon, Southcentral Alaska, collected October 12-13, 2021, Raw Data File 2023-2, uses aerial lidar to produce a classified point cloud, digital surface model (DSM), digital terrain models (DTM), and intensity model of land near Grewingk Glacier and Halibut Cove Lagoon, located in Southcentral Alaska (cover figure). Aerial data were collected October 12-13, 2021, and subsequently processed in a suite of geospatial processing software. Ground control data were collected on October 12, 2021. This data supports a paraglacial rock slope destabilization study at Grewingk Glacier and Grewingk Lake and will be used to assess and characterize an ongoing landslide hazard. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30958).
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