Historical coastal bluff edge positions at Barter Island, Alaska for the years spanning 1950 to 2020

This dataset includes one vector shapefile delineating the position of the top edge of the coastal permafrost bluffs at Barter Island, Alaska spanning seven decades, between the years of 1950 and 2020. Bluff-edge positions delineated from a combination of aerial photography, declassified satellite photography, and very-high resolution satellite imagery can be used to quantify the movement of the bluff edge through time. These data were used to calculate rates of change every 10 meters alongshore using the Digital Shoreline Analysis System (DSAS) version 5.0. DSAS uses a measurement baseline method to calculate rate-of-change statistics. Transects are cast from the reference baseline to intersect each bluff edge vector, establishing measurement points used to calculate bluff change rates.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:5fa22256d34e198cb7953fff
metadata_type geospatial
modified 20201204
old-spatial -143.798211601, 70.083358162, -143.369936039, 70.151990928
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 929c98c966c2d6c26ace4b5897710d2b14c891e0
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-143.798211601, 70.083358162], [-143.798211601, 70.151990928], [ -143.369936039, 70.151990928], [ -143.369936039, 70.083358162], [-143.798211601, 70.083358162]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • arctic-national-wildlife-refuge
  • arctic-ocean
  • barter-island
  • ckan
  • cmhrp
  • coastal-and-marine-hazards-and-resources-program
  • coastal-erosion
  • coastal-processes
  • digital-shoreline-analysis-system
  • dsas
  • environment
  • geo
  • geomorphology
  • geoscientificinformation
  • geospatial-datasets
  • geoss
  • national
  • north-america
  • north-slope
  • oceans
  • pacific-coastal-and-marine-science-center
  • pcmsc
  • permafrost
  • physical-habitats-and-geomorphology
  • shoreline-accretion
  • state-of-alaska
  • u-s-geological-survey
  • united-states
  • usgs
  • usgs-5fa22256d34e198cb7953fff
isopen False
license_id notspecified
license_title License not specified
maintainer PCMSC Science Data Coordinator
maintainer_email pcmsc_data@usgs.gov
metadata_created 2025-11-21T19:07:22.620222
metadata_modified 2025-11-21T19:07:22.620226
notes This dataset includes one vector shapefile delineating the position of the top edge of the coastal permafrost bluffs at Barter Island, Alaska spanning seven decades, between the years of 1950 and 2020. Bluff-edge positions delineated from a combination of aerial photography, declassified satellite photography, and very-high resolution satellite imagery can be used to quantify the movement of the bluff edge through time. These data were used to calculate rates of change every 10 meters alongshore using the Digital Shoreline Analysis System (DSAS) version 5.0. DSAS uses a measurement baseline method to calculate rate-of-change statistics. Transects are cast from the reference baseline to intersect each bluff edge vector, establishing measurement points used to calculate bluff change rates.
num_resources 2
num_tags 32
title Historical coastal bluff edge positions at Barter Island, Alaska for the years spanning 1950 to 2020