Transects_OpenOcean.shp - Digital Shoreline Analysis System version 4.3 Transects with Linear Regression Rate Calculations for the Open Ocean coast of Dauphin Island, Alabama.

Rates of shoreline change for Dauphin Island, Alabama were generated for three analysis periods, using two different shoreline proxy datasets. Mean High Water line (MHW) shorelines were generated from 14 lidar datasets (1998-2014) and Wet Dry Line (WDL) shorelines were digitized from ten sets of georeferenced aerial images (1940-2015). Rates of change were generated for three groups of shorelines: MHW (lidar), WDL (aerial) and MHW and WDL shorelines combined. These data will aid in developing an understanding of the evolution of the barrier island position, size and shape as well as documenting spatially-variable patterns in erosion and accretion of different sections of the island.

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:5ce9fe77-24c9-40ee-96c6-e9ee5b347395
metadata_type geospatial
modified 20201013
old-spatial -88.347875, 30.222462, -88.070575, 30.287079
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 3cd799ebb7261abb3454e2c388874055e05621bc
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-88.347875, 30.222462], [-88.347875, 30.287079], [ -88.070575, 30.287079], [ -88.070575, 30.222462], [-88.347875, 30.222462]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • accretion
  • al
  • alabama
  • amerigeo
  • amerigeoss
  • boundaries
  • ckan
  • coastal
  • coastal-processes
  • dauphin-island
  • digital-shoreline-analysis-system-dsas
  • dsas
  • environment
  • erosion
  • geo
  • geology
  • geomorphology
  • georeferenced-aerial-imagery
  • geoscientificinformation
  • geoss
  • gulf-of-mexico
  • historic-shoreline
  • lidar
  • linear-regression-rate
  • long-term-shoreline-change-rate
  • mean-high-water-mhw
  • national
  • north-america
  • oceans
  • shoreline
  • shoreline-change
  • spcmsc
  • st-petersburg-coastal-and-marine-science-center
  • transects
  • u-s-geological-survey
  • unconsolidated-deposits
  • united-states
  • usa
  • usgs
  • usgs-5ce9fe77-24c9-40ee-96c6-e9ee5b347395
  • vectorization
  • wet-dry-line-wdl
isopen False
license_id notspecified
license_title License not specified
maintainer Rachel E. Henderson
maintainer_email rehenderson@usgs.gov
metadata_created 2025-11-22T06:52:35.890474
metadata_modified 2025-11-22T06:52:35.890479
notes Rates of shoreline change for Dauphin Island, Alabama were generated for three analysis periods, using two different shoreline proxy datasets. Mean High Water line (MHW) shorelines were generated from 14 lidar datasets (1998-2014) and Wet Dry Line (WDL) shorelines were digitized from ten sets of georeferenced aerial images (1940-2015). Rates of change were generated for three groups of shorelines: MHW (lidar), WDL (aerial) and MHW and WDL shorelines combined. These data will aid in developing an understanding of the evolution of the barrier island position, size and shape as well as documenting spatially-variable patterns in erosion and accretion of different sections of the island.
num_resources 2
num_tags 42
title Transects_OpenOcean.shp - Digital Shoreline Analysis System version 4.3 Transects with Linear Regression Rate Calculations for the Open Ocean coast of Dauphin Island, Alabama.