Datasets / Index Layers for High-Resolution Orthorectified Imagery from Approximately 1980 for the Coastal Areas of Bering Land Bridge NP (BELA) and Cape Krusenstern NM (CAKR), Northwest Alaska


Index Layers for High-Resolution Orthorectified Imagery from Approximately 1980 for the Coastal Areas of Bering Land Bridge NP (BELA) and Cape Krusenstern NM (CAKR), Northwest Alaska

Published By National Park Service, Department of the Interior

Issued más de 9 años ago

US
beta

Summary

Type of release
ongoing release of a series of related datasets

Data Licence
Not Applicable

Content Licence
Creative Commons CCZero

Verification
automatically awarded

Description

This vector shapefile is one of two index map layers for 57 frames of orthorectified aerial photography from approximately 1980 for the coastal and nearshore areas of Bering Land Bridge National Preserve (BELA), Cape Krusenstern National Monument (CAKR), and nearby portions of northwestern Alaska. The index polygons are attributed with image filename, photo date, RMSE, scale, frame and roll numbers. The frames are derived from 1:64,000-scale, color-infrared (CIR) photographs acquired by the USGS from 1978 to 1985, as part of the Alaska High Altitude Photography (AHAP) program. Other imagery available in this series includes orthorectified aerial photography for approximately 1950 and 2003. All data is available through an unrestricted public license, and can be obtained on a hard drive by request (see Distributor contact information below). The imagery will be of interest to land managers, scientists, and others for observation and analysis of natural features and ecosystems.