Digital Shorelines and Analysis for the Coastal Areas of Bering Land Bridge NP (BELA) and Cape Krusenstern NM (CAKR), Northwest Alaska
Manley W and Lestak L. 2009. Digital Shorelines and Analysis for the Coastal Areas of Bering Land Bridge NP (BELA) and Cape Krusenstern NM (CAKR), Northwest Alaska. Northwestern Alaska, USA
This data release consists of shoreline reference features and shoreline change analysis data and results for the coastal areas of Bering Land Bridge National Park (BELA) and Cape Krusenstern National Monument (CAKR). The data and coastal change results enables coastal erosion analysis and display of the coastline at high resolution for approximately 480 km of shoreline. The shoreline and analysis assists the goals of the NPS Arctic Network Inventory and Monitoring Program, which has a mission to "collect, compile, and synthesize scientific information about the arctic network of parks to facilitate their preservation, unimpaired, for future generations." The shoreline reference features are defined as the waterline and were digitized onscreen from orthorectified aerial photography for the coastal areas of BELA, CAKR, and nearby portions of northwestern Alaska. Shorelines consist of three timeslices: from 2003, approximately 1980, and approximately 1950. These images and the companion shorelines were completed as part of a study on coastal erosion in collaboration between the University of Colorado (Institute of Arctic and Alpine Research) and the National Park Service (Arctic Network Inventory and Monitoring Program). The shorelines have a total length of approximately 480 km. Shoreline error was calculated using the square root of the sum of the squares (SRSS) calculation of the orthorectification and digitization errors and then annualized for each time slice. Average errors for all timeslices are 0.1 m for BELA and CAKR. Other data available in this series includes Digital Shoreline Analysis System (DSAS) files. Together, the data will be of interest to land managers, scientists, and others for observation and analysis of natural features and ecosystems. The shorelines are available in ArcGIS shapefile format. They have a UTM zone 3 projection and NAD83 datum, with FGDC-compliant metadata. Attribute information in the shapefile tables includes, frame number, acquisition date, comments, and line length. The shapefiles are available through an unrestricted public license, and can be obtained online at: http://www1.nature.nps.gov/im/units/arcn/. With questions, please contact the Arctic Network Data Manager, National Park Service (NPS), Arctic Network Inventory and Monitoring Program, 4175 Geist Road, Fairbanks, AK, 99709-3420; phone: 907-455-0600; email: Scott_Miller@nps.gov; websites: http://www1.nature.nps.gov/im/units/arcn/ and http://instaar.colorado.edu/QGISL/ARCN/.
- Type
- Geospatial Dataset
- Authors
- Manley, William; Lestak, Leanne
- Date of Issue
- 2009
- Units
- BELA , CAKR
- Keywords
- Accretion, Arctic Network, Bering Land Bridge, bluff retreat, Cape Krusenstern, Coastal, digitized shoreline, DSAS, Erosion, Geomorphology, image, Imagery, Monitoring, National Park Service, NPS, Physical