U.S. flag

An official website of the United States government

icon-dot-gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

icon-https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Spatial Extent of Data

ISO 19115 Topic Category

Satellite-derived shorelines and foredune toes along Minnesota Point (Duluth, MN) from 2016 to 2023

This data release contains 2 shapefiles which include 626 unique shorelines and 3 foredune toes spanning 2016 to 2023 along Minnesota Point, a 9-kilometer long bay-mouth bar at the western end of Lake Superior. Each shoreline represents the intersection line between land and water at a unique time associated with the capture of a satellite image, and these shorelines are used to examine trends in beach width and investigate beach nourishment performance in an accompanying publication (Roland et al., 2024). The shorelines were extracted from 3-meter resolution Planet Labs PlanetScope satellite imagery following the methods of Doherty et al., 2022. A site-specific machine learning model was developed to classify image pixels into water, whitewater, sand, and other land classifications, and the model is documented in an associated model archive (Roland, 2024). Each foredune toe line represents the manually interpreted intersection between the relatively flat beach face and the steeper dune face at a point in time associated with an aerial LiDAR data acquisition (July 2009, September 2019, and April 2021). The foredune toe positions are used to assess erosion trends along the length of Minnesota Point.

Get Data and Metadata
Author(s) Collin J Roland, Joel T Groten orcid
Publication Date 2024-09-23
Beginning Date of Data 2016-09-21
Ending Date of Data 2023-12-29
Data Contact
DOI https://doi:10.5066/P1W7SBUX
Citation Roland, C.J., and Groten, J.T., 2024, Satellite-derived shorelines and foredune toes along Minnesota Point (Duluth, MN) from 2016 to 2023: U.S. Geological Survey data release, https://doi:10.5066/P1W7SBUX.
Metadata Contact
Metadata Date 2024-11-18
Related Publication
Citations of these data No citations of these data are known at this time.
Access public
License http://www.usa.gov/publicdomain/label/1.0/
Loading...
Harvest Source: ScienceBase
Harvest Date: 2025-02-03T05:05:35.855Z