william f. manley instaar, university of colorado
DESCRIPTION
High-Resolution Orthorectified Imagery for the Coastal Areas of Bering Land Bridge NP (BELA) and Cape Krusenstern NM (CAKR), Northwest Alaska. William F. Manley INSTAAR, University of Colorado Diane M. Sanzone Arctic I&M Program, National Park Service - PowerPoint PPT PresentationTRANSCRIPT
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High-Resolution Orthorectified Imagery for the Coastal Areas of Bering Land Bridge NP (BELA) and Cape
Krusenstern NM (CAKR), Northwest Alaska
William F. Manley INSTAAR, University of ColoradoDiane M. Sanzone Arctic I&M Program, National Park ServiceEric G. Parrish INSTAAR, University of ColoradoLeanne R. Lestak INSTAAR, University of Colorado
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Introduction
This powerpoint presentation is a visual overview of high-resolution orthorectified imagery that is now available for the coastal and nearshore areas of BELA, CAKR, and nearby portions of northwest Alaska.
The imagery was completed as part of a study on coastal erosion by the University of Colorado in collaboration with the Arctic Network Inventory and Monitoring Program. Beyond analysis of coastal change, the imagery will be of interest to land managers, scientists, and others for observation and study of natural features and ecosystems.
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Imagery
2003
ca. 1980
ca. 1950orthorectified photography for approx. 1980 (53 GB)
2003 orthophoto mosaic (94 GB)
orthorectified photography for approx. 1950 (15 GB)
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Goals
The three, co-registered timeslices of imagery will be helpful to assess the status of environmental features, and to detect change in:
1) cultural resources and archeological sites
2) ecosystem components such as coastal zones, wetlands, geology, soils, permafrost, lake and stream hydrology, and vegetation assemblages
3) marine, terrestrial, and freshwater habitats for a variety of animals
The imagery 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."
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Study Area
C h u k c h
i S
e a
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• from NOAA & NPS 1:24,000 natural color photos
• mosaic created by Aero-Metric
• 0.6 m resolution
• accuracy: 1.1 m (RMSE)
• 103 tiles, 94 GB: lots of imagery!
• highest res. in Alaska for this large of an area
• available to the public
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60 framesColor IR1.0 m res.
• 57 frames• Color IR (USGS AHAP)• 1:64,000• fully orthorectified to 2003 imagery using Imagine• 1.0 m resolution• 1.5 m accuracy (RMSE)
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130 framesBlack & White1.0 m res.
• 108 frames• Black and White• 1:43,000• fully orthorectified to 2003 imagery using Imagine• 1.0 m resolution• 2.0 m accuracy (RMSE)
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Zooming In ...
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2003
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1949
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1985
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Bluff erosion, as an example of environmental change: 78 m (256 ft)
over 54 years
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Available to the Public:
• readme file• 2003 orthophoto mosaic (103 tiles)
image files (.tif, .tfw, .rrd)sid files (.sid, .sdw)metadata files (.html, .txt, .xml)
• ca. 1980 orthorectified photos (57 frames)image files (.tif, .rrd) Note: georeferencing info. embedded in .tif
metadata files (.html, .txt, .xml)
• ca. 1950 orthorectified photos (108 frames)image files (.tif, .rrd) Note: georeferencing info. embedded in .tif
metadata files (.html, .txt, .xml)
• accessory layers2003 image extent showing NPS vs. NOAA source areasindex shapefiles Note: attributed with details
2003 tilesca. 1980 framesca. 1950 frames
See the README file and metadata files for more information.
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Arctic Network Data ManagerNational Park ServiceArctic Network Inventory and Monitoring Program4175 Geist RoadFairbanks, AK [email protected]
Available to the Public, cont’d:
The three datasets are being made available on external hard drive.
Contact:
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Questions:
Arctic Network Data ManagerNational Park ServiceArctic Network Inventory and Monitoring Program4175 Geist RoadFairbanks, AK [email protected]
William Manley, PhDInstitute of Arctic and Alpine Research (INSTAAR)University of Colorado1560 30 th StreetBoulder, CO [email protected]
or