Skip to main content

Offshore baseline for the exposed East Beaufort Sea, Alaska coastal region (U.S. Canadian Border to the Hulahula River) generated to calculate shoreline change rates

Dates

Publication Date
Time Period
2017

Citation

Gibbs, A.E., Ohman, K.A., Coppersmith, R., and Richmond, B.M., 2017, National Assessment of Shoreline Change: A GIS compilation of updated vector shorelines and associated shoreline change data for the north coast of Alaska, U.S. Canadian border to Icy Cape: U.S. Geological Survey data release, https://doi.org/10.5066/F72Z13N1.

Summary

This dataset includes a reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics for the exposed north coast of Alaska coastal region between the U.S. Canadian Border to the Hulahula River for the time period 1947 to 2010. This baseline layer serves as the starting point for all transects cast by the DSAS application and can be used to establish measurement points used to calculate shoreline-change rates.

Contacts

Attached Files

Click on title to download individual files attached to this item.

Shapefile: EastBeaufort_exposed_baseline.zip
EastBeaufort_exposed_baseline.CPG 5 Bytes
EastBeaufort_exposed_baseline.dbf 198 Bytes
EastBeaufort_exposed_baseline.prj 145 Bytes
EastBeaufort_exposed_baseline.sbn 252 Bytes
EastBeaufort_exposed_baseline.sbx 132 Bytes
EastBeaufort_exposed_baseline.shp 2.63 KB
EastBeaufort_exposed_baseline.shx 196 Bytes

Purpose

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 U.S. Geological Survey (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.

Additional Information

Shapefile Extension

boundingBox
minY69.64755016109842
minX-144.0181040846883
maxY70.15553292062579
maxX-140.99996555513937
files
nameEastBeaufort_exposed_baseline.CPG
contentTypetext/plain
pathOnDisk__disk__2b/62/c9/2b62c9d858779ab1db6f2577b0c8bd6e880170c1
size5
dateUploadedThu Jun 15 17:25:38 MDT 2017
nameEastBeaufort_exposed_baseline.dbf
contentTypeapplication/unknown
pathOnDisk__disk__9d/37/31/9d3731f0056651a289283ef1fd72aa919d5a1366
size198
dateUploadedThu Jun 15 17:25:38 MDT 2017
nameEastBeaufort_exposed_baseline.prj
contentTypetext/plain
pathOnDisk__disk__8d/89/b4/8d89b43869232b131b8f873e1443dbbe007b5252
size145
dateUploadedThu Jun 15 17:25:38 MDT 2017
nameEastBeaufort_exposed_baseline.sbn
contentTypex-gis/x-shapefile
pathOnDisk__disk__d7/d1/c9/d7d1c95b03148f6ef1f97ee1906f2b8c7abe8a23
size252
dateUploadedThu Jun 15 17:25:38 MDT 2017
nameEastBeaufort_exposed_baseline.sbx
contentTypex-gis/x-shapefile
pathOnDisk__disk__26/2e/be/262ebe69b2c5ccbe3ec36a1e9c43ecbe357f3582
size132
dateUploadedThu Jun 15 17:25:38 MDT 2017
nameEastBeaufort_exposed_baseline.shp
contentTypex-gis/x-shapefile
pathOnDisk__disk__1c/cb/1f/1ccb1f5c32bd4051acf2e2d03d9294abf2c0513a
size2692
dateUploadedThu Jun 15 17:25:38 MDT 2017
nameEastBeaufort_exposed_baseline.shx
contentTypex-gis/x-shapefile
pathOnDisk__disk__1a/49/b1/1a49b1433126e13dd6ebfb6f6d2462ba4e4a2902
size196
dateUploadedThu Jun 15 17:25:38 MDT 2017
geometryTypeMultiLineString
nameEastBeaufort_exposed_baseline
nativeCrsEPSG:4326

Item Actions

View Item as ...

Save Item as ...

View Item...