Online Links:
Online Links:
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 281 |
| Range of values | |
|---|---|
| Minimum: | 07/20/1947 |
| Maximum: | 08/12/2012 |
| Range of values | |
|---|---|
| Minimum: | 1947 |
| Maximum: | 2012 |
| Range of values | |
|---|---|
| Minimum: | 6 |
| Maximum: | 16 |
| Value | Definition |
|---|---|
| 0 | Shoreline that has a known month, day, and year attribute |
| 1 | Shoreline that has a known year but not a month or day attribute |
| Value | Definition |
|---|---|
| Alaska SDMI orthoimagery | SPOT satellite image mosaic compiled as part of the Alaska State Digital Mapping Initiative |
| NASA, Alaska High Altitude Photography | Orthorectified Alaska high altitude photography mosaics |
| NOAA, T-Sheet | National Oceanographic and Atmospheric Administration Topographic Sheets |
| NOAA, Nautical Chart | National Oceanographic and Atmospheric Administration Nautical Chart |
| USGS, DOQQ | U.S. Geological Survey Digital Orthophoto Quarter Quandrangle orthophotgraphy |
| USGS, Lidar | Digital elevation models derived from lidar elevation data |
| Range of values | |
|---|---|
| Minimum: | 73.0225201721 |
| Maximum: | 43072.0331765 |
U.S. Geological Survey
The Arctic Coastal Plain of northern Alaska is an area of strategic economic importance to the United States, is home to remote Native American communities, and encompasses unique habitats of global significance. Coastal erosion along the north coast of Alaska is chronic, widespread, may be accelerating, and is threatening defense and energy-related infrastructure, natural shoreline habitats, and Native Alaskan communities. There is an increased demand for accurate information regarding past and present shoreline changes across the United States. To meet these national needs, the Coastal and Marine Geology Program of the USGS is compiling existing reliable historical shoreline data along sandy shores of the conterminous United States and parts of Alaska and Hawaii under the National Assessment of Shoreline Change project. There is no widely accepted standard for analyzing shoreline change. Existing shoreline data measurements and rate calculation methods vary from study to study and prevent combining results into state-wide or regional assessments. The impetus behind the National Assessment project was to develop a standardized method of measuring changes in shoreline position that is consistent from coast to coast. The goal was to facilitate the process of periodically and systematically updating the results in an internally consistent manner.
Online Links:
Online Links:
Online Links:
Online Links:
Online Links:
Online Links:
Are there legal restrictions on access or use of the data?Access_Constraints: None
Use_Constraints:USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data.
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
| Data format: | This WinZip file contains a shapefile of historic shorelines from 1947 to 2012 for the Eastern Chukchi Sea coast of Alaska and associated metadata. in format Vector Digital Data Set (Polyline) (version 9.0) Esri polyline shapefile Size: 590 |
|---|---|
| Network links: |
https://www.sciencebase.gov/catalog/file/get/59483805e4b062508e34443b https://doi.org/10.5066/F72Z13N1 |
This zip file contains data available in Environmental Systems Research Institute (Esri) polyline shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from Esri at www.esri.com.