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National Geodetic Survey Benchmark Recovery Project Denali National Park and Preserve Britta Schroeder, GIS Specialist, NPS Nic Kinsman, Alaska Regional Advisor, NGS March 9, 2017
National Geodetic Survey
Benchmark Recovery Project Denali National Park and Preserve
Britta Schroeder, GIS Specialist, NPS
Nic Kinsman, Alaska Regional Advisor, NGS March 9, 2017
Outline
• History of Benchmarks
• Importance of Benchmark Recovery
• GPS on Benchmarks
• Outreach and Education
• Next Level
2
HISTORY
National
Statewide
Denali
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What is NOT a benchmark?
Pre-2015 Current
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5
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Photo courtesy of J. Yates
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Photo courtesy of J. Yates
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History
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SIGNIFICANCE
National Spatial Reference System
Local to Global Coordinates
Installations
Cultural
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National Spatial Reference System
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Local and Global Coordinates
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GPS ON BENCHMARKS
Recover
Observe
Report
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Recover
Print benchmark datasheets
Load datasheet coordinates into
GPS units
Observe
All recoveries
• Gather GPS coordinates
• Take photos
• Assess as candidate for base survey
Base Surveys
• Collect 4+ hours of survey-grade GPS data
• Take photos
• Measure HI
Report
All recoveries
• Submit mark survey form to NGS
Base Surveys
• Submit survey data to OPUS Shared Solutions
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Reconnaissance and Recovery
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1200 feet
504 feet
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~ 200 feet
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Observe
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Ph
oto
s
Eq
uip
me
nt
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Report
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OUTREACH AND EDUCATION
Geospatial Youth Events
Volunteers
Partners
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Technology in Wilderness
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NEXT LEVEL
DENA
NPS
Alaska
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Photo courtesy of J. Yates
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Guidance
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References and Resources
• National Research Council (U.S.). Committee on the Alaska Earthquake. The Great Alaska Earthquake of 1964, Seismology and Geodesy. 1972. Washington, D.C. National Academy of Sciences
• NGS website
• U.S. Geological Survey Photo Library
• University of Alaska Photo library
Britta Schroeder
Nic Kinsman
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