boundaries: A boundary, also known as an Area of Interest (AOI) or border, that defines the area covered by the data. classified_points: Classified point cloud data are provided in LAZ format. Classification follows ASPRS 2025 standards with return and intensity values. Ground-classified points have a mean density of 41.1 pts/m2 and an average spacing of 15.6 cm. dsm: The DSM represents surface elevations, including heights of vegetation and structures. The DSM is a single-band, 32-bit tiled GeoTIFF dataset of 10-cm resolution. No Data value is set to -3.40282306074e+38 (32-bit, floating-point minimum). dtm: The DTM represents bare earth elevations, excluding vegetation and structures. The DTM is a single-band, 32-bit tiled GeoTIFF dataset of 10-cm resolution. No Data value is set to -3.40282306074e+38. footprints: Footprints for tiled data. lidar_intensity: The lidar intensity image describes the relative amplitude of reflected signals contributing to the point cloud. Lidar intensity is (1) primarily a function of scanned object reflectance in relation to the signal frequency, (2) dependent on ambient conditions, and (3) not necessarily consistent between separate scans. The intensity image is a single-band, 32-bit GeoTIFF file of 1-m resolution, with a No Data value set to -3.40282306074e+38.
Online Links:
These data products were funded by the State of Alaska Landslide Hazard Capital Improvement Project and collected and processed by DGGS. We thank Clearwater Air and Alpine Air for their aviation expertise and contribution to these data products.
These elevation data products were generated to support assessment of landslide movement at the Barry Arm site. Accurate, snow‑free elevation measurements allow scientists to detect subtle changes in the terrain over time. Monitoring these changes helps identify accelerating movement, evaluate potential slope instability, and improve understanding of the landslide's behavior. This information is essential for assessing hazards, informing risk‑mitigation efforts, and supporting decision‑making for communities and infrastructure that could be affected by rapid slope failure or tsunami generation in Barry Arm.
Online Links:
Online Links:
Online Links:
Online Links:
Are there legal restrictions on access or use of the data?Access_Constraints:
This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).Use_Constraints:Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
| Data format: | boundaries, classified points, dsm, dtm, footprints and lidar intensity in format data |
|---|---|
| Network links: |
https://doi.org/10.14509/31970 |