building the national spatial data infrastructure in alaska alaska geographic data committee...
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Building the National Spatial Data Infrastructure in Alaska
Alaska Geographic Data Committee Presented by: Richard McMahon, DNR
May 9, 2003
Build geographic information partnerships in Alaska
Leverage resources
Promote the visions and goals of the National Spatial Data Infrastructure
JuneauJuneau
BarrowBarrow
OrlandoOrlando
New YorkNew York
1,100 miles1,100 miles
1,100 miles1,100 miles
SIZE AND DISTANCE COMPARISON
At 586,400 square miles, Alaska At 586,400 square miles, Alaska is as wide as the lower 48 statesis as wide as the lower 48 statesand larger than Texas, California and larger than Texas, California and Montana combined and Montana combined
Vision
• Current and accurate geospatial data will be readily available to contribute locally, nationally, and globally to economic growth, environmental quality and stability, and social progress.
• Capture this vision by publishing the Alaska I-Team Plan for NSDI Implementation
AGDC
Some Themes of Data Are Commonly Used
0
10
20
30
40
50
60
70
80
90
100
Transportation Water Cultural Elevations Parcels Boundaries
Currently use Need
Do you use these themes of digital data?(If no, do you foresee that you might need them?)
1996
Base Map Data FrameworkBase Map Data Framework
In progress
Complete Elevation (general)Elevation (general)
HydrographyHydrography
Geodetic controlGeodetic control
CadastralCadastral
TransportationTransportation
Governmental UnitsGovernmental Units
LandcoverLandcover
BathymetryBathymetry
Elevation (accurate)Elevation (accurate)
Digital OrthoimageryDigital OrthoimageryDoes not exist
The Information Technology Promise
InfrastructureInfrastructure
SpecificSpecificBusiness ApplicationsBusiness Applications
StandardStandardBusiness ApplicationsBusiness Applications
High Value ToHigh Value ToThe BusinessThe Business
Low Value ToLow Value ToThe BusinessThe Business
The Information Technology Challenge
High Value ToHigh Value ToThe BusinessThe Business
Low Value ToLow Value ToThe BusinessThe Business InfrastructureInfrastructure
SpecificSpecificBusiness ApplicationsBusiness Applications
StandardStandardBusinessBusiness ApplicationsApplications
80% Of Budget80% Of Budget80% Of Budget80% Of Budget
20% Of Budget20% Of Budget20% Of Budget20% Of Budget
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Geographic Data
Base Data Decision Process
Decision Process
Cooperative Agreements:State – BLMState – USGS
Initiatives: eg Cadastral
CadastralGov. Units
16%
Hydrography7%
Transportation 9%
Geodetic Control12%
Elevation Models &
Ortho-Imagery57%
Relative Costs of Framework Layers
Data Sharing & Open Standards
“The Open GIS Consortium envisions the full integration of geospatial data and geoprocessing resources into mainstream computing and the widespread use of interoperable, commercial geoprocessing software throughout the information infrastructure.”
OCG 1996
gIS not GIS - Geoprocessing integrated
into the everyday workflow.
View from 10 Years Ago
Range Check with 1993 Issues 1. No agreed upon national vision of the NSDI, no apparatus to implement it.
Consequently, there is no national policy covering spatial data.
2. Because of the lack of central oversight, there appears to be extensive overlap and duplication in spatial data collection … high variation makes the sharing of spatial data is very difficult or impossible.
3. There are no current mechanisms that allow identification of spatial data have been collected, where the data are stored, who controls access, content of the data, and the data coverage.
4. Standard activities need to be expanded beyond transfer standards. There is no agreed upon representation of “base data” as a function of scale.
5. There are major impediments to, and few workable incentives for, the sharing of spatial data among the federal, state, and local organizations.
Open GIS Consortium, Inc.Open GIS Consortium, Inc.
1-meter resolution
Specifications
Urbanized area, native villages, major transportation corridors and the Trans-Alaska Pipeline
Color-Infrared Imagery
Quarter-quad format
Meets National Map Accuracy Standards
North American Datum 1983
Source: Gust Panos, BLM
Chair OrthoImagery Sub-Committee
Specifications
5-meter resolution
Statewide coverage
Quarter-quad format
Color-Infrared Imagery
Meets National Map Accuracy Standards
North American Datum 1983
LANDSAT 7 BASEMAP PROJECT
University of Alaska Fairbanks
Geographic Information Network of
Alaska
GINA
http://www.ion.gina.alaska.edu/
Statewide Basemap: Suitable for 1:63360
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Digital Elevation ModelsDEM
Uses of digital elevation data:
aspectdrainagewatershed
slopelandform
contourssolar insolation
Geometric corrections for orthoimagery
Derive topographic information
Color swaths indicate the number of times the area was imaged by SRTM
0 1 2 3 4 ?
Source: Rick Guritz, UAF SAR Facility
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SAR Tandem Mission: Fairbanks
ESA Tandem Mission Results; Accuracy Assessment
Rick Guritz; ASF Special Projects Manager
Source: Rick Guritz, UAF SAR Facility
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DEM Control GPS Road Survey
• Methodology: – Conducted GPS surveys
on road – Compare DEM heights vs.
measured GPS heights – Map errors – Statistical summary
comparing GPS with the DEM
Fairbanks GPS Project Lead:
Dave Burns, DNR Forestry Division
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DNR Forestry GPS Road Survey
Source:Dave Burns,
Division of Forestry Rick Guritz
UAF SAR Facility
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Statistical AssessmentGPS Road Survey
USGS_ELEV TOPSAR_ELEV TOPSARPRE_ELEV STAR3I_ELEV STAR3IPRE_ELEV TANDEM_ELEV TANDEMPRE_ELEVmin -68.07 -20.39 -111.43 -9.58 -14.28 -30.32 -60.40max 67.24 14.12 20.09 17.70 26.21 7.16 12.07average -1.97 -2.87 -2.59 2.21 1.82 -7.05 -6.45stdevp 12.34 3.61 4.02 3.74 4.74 3.97 5.64rmse 12.50 4.62 4.78 4.35 5.08 8.09 8.56
Source: Rick GuritzUAF SAR Facility
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DEM SAR Feasibility Assessment
• Product Accuracy - Tandem Results over Fairbanks are well within the National Map accuracy standards (1:24,000 scale). Proceed with further development.
• Data Availability – There is adequate coverage, ascending and descending for ~ 50% of Alaska, ~50% descending only
• Data Quality – Quality is adequate in spite of varying topography and land cover conditions for the majority of the state.
• Distribution – ESA derived products are unrestricted – public domain.
Bathymetry & CoastlineMajor NOAA Bathymetric Studies Underway.
Alaska Coastline
Miles of Coastline
NOAA
26,000 + miles
USGS 1:63,360
40,000+ miles
Geodetic Control
• Low Density Control Grid
• Deployment of CORS Stations Underway
• Plans Tied to Air Transportation Grid - FAA Airports
• Alaska DOT/PF densifying grid along transportation routes.
CORS: Continuously Operating Reference Stations
Alaska Cadastral Project
Source: Alaska BLM Cadastral Survey
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Topography
Alaska Cadastral
Project Vision
Public Survey
Private Survey
Federal Land Parcels
State Land Parcels
Borough & Muni
Native Parcels
Documents
Ortho-images
Land Use eg. Trails
All Land Owners
Reports and Data Tables
~ 100,000 Plats & Surveys
~100,000 State and Federal Plats and Surveys Available
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Cadastral: Spatially Enabled Recorder’s Office
No MAP BASED
search option available
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Contents:Home Download Data Tools and Utilities Available Surveys SDMS Township Query New Protracted Corners New Township Locator New Survey Query
Help: Using Interactive Maps Frequently Asked Questions Questions/Comments
Site Information: Use of Cookies Disclaimer Privacy Policy
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Cadastral – Land Ownership – Governmental Units
Answers the question for industry and the general public:Who administers this land, where are the political jurisdictions?
This layer is about 80% Complete.
Transportation
Alaska Road Network
Alaska Road Network
Alaska has 13,485 miles of roads.
Arkansas a state 1/12th the size ofAlaska has six times the road mileageat 77,085 miles
Transportation Data Sources
Transportation As Part of Statewide Basemap• Statewide Highway System• Borough Roads• Forest Roads - Timber and Fire Programs• Mining Access, RS2477• North Slope Infrastructure• Transportation Planning: Part of 1993 Land
Selections – Corridor Analysis Maps• FAA Airports• Right of Way Projects - Decisions
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DIFFERENTIAL GLOBAL POSITIONING SYSTEM CENTERLINE DATA
• ROADWAY CENTERLINE PROJECT GOAL: create a current, accurate digital dataset of the State Transportation Network using DGPS receivers.
• New methodology planned for Summer 2003 season, goal is to reduce total cost and time required to process raw data.
• The program has been in place for three field seasons.
• The posted data is a fraction of what has been collected, more data will be added on a regular basis.
• Alaska Department of Transportation and Public Facilities, Statewide GIS Mapping Section is project manager.
• http://www.dot.state.ak.us/stwdplng/mapping/web/dgps_centerline.html
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State of Alaska Watershed and Stream Hydrography Enhanced Datasets
(AWSHED) Project
Funded by:
Source:
Dennis Tol
Alaska BLM
Sub-Committee Chair
Phone - 907 271-3348E-mail - dtol@ak.blm.gov
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National Hydrographic Database Alaska Key Products
• Routed stream coverage with standard waterbody identifiers
• Delineated 5th and 6th level Hydrologic Units
• Leading Application: Statewide Fisheries Database- Anadromous Waters Catalog
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Watershed Delineation for the Upper Copper River Catalog Unit(4th Level)
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Alaska Watershed and Stream
Hydrography Enhanced Datasets
Web Site - HTTP://agdc.usgs.gov/hydro
Dennis Tol
Alaska BLMPhone - 907 271-3348
E-mail - dtol@ak.blm.gov
NHD Website: http://nhd.usgs.gov
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Managing the Geospatial Library
Transportation
FGDC OtherStandards
OGCOMG WWWC ISO SisterDisciplines
© 1998, Open GIS Consortium, Inc. All Rights Reserved© 1998, Open GIS Consortium, Inc. All Rights Reserved
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Key Points
Alaska needs a new basemap. The paper based maps from USGS are no longer meeting our needs.
Alaska deserves a digital basemap that is consistent with National Standards.
Basemap information is essential for planning developments, managing assets, improving living conditions, responding to disasters and protecting the environment.
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Spatial data infrastructure has significant economic benefits to the community. Benefit-Cost ratios have been as high as
9 : 1
Benefits of spatial data increase as more organizations have access to the data. The Alaska Initiatives have broad support in the community. I-Team Plans are the next step.
Key Points
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