national height modernization program overview january 24, 2006 juliana blackwell height...
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National Height ModernizationProgram Overview
January 24, 2006
Juliana BlackwellHeight Modernization Program Manager
Height Modernization Overview
• Definition• Background• Needs and Benefits • Outreach and Education
Height Modernization is …
…the establishment of accurate, reliable heights using GPS technology in conjunction with traditional leveling, gravity, and modern remote sensing information.
D E F I N I T I O N
Before you build . . .. . . inspect your foundation.
D E F I N I T I O N
Height Modernization Objective
NSRS
NAVD 88
GEODETIC CONTROL
Reliable
Cost-effective
Accurate
Standardized Legally Established
D E F I N I T I O N
Geoid (Gravity & modeling)
Ellipsoid (GPS)
Orthometric (Leveling)
What Types of Heights are Involved? D E F I N I T I O N
?
?
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Building the System
Models,
Tools
Outreach,
Education,
Expertise
Guidelines,
Specifications
D E F I N I T I O N
The Roots of Height Modernization
In 1994 - First meeting held in Sacramento, CA • Some heights in CA in error by more than a meter• GPS could be immediately used to meet some of
California’s requirements• Necessary for the implementation of NAVD 88
In 1998, $1.0 M was added to NGS budget to perform Height Modernization Study
B A C K G R O U N D
• In 1999, Height Modernization not mentioned• In 2000, $500K added to NGS’ budget for Height
Modernization planning• In 2001, $2.25M added to NGS budget to perform
Height Modernization in North Carolina, to support the California Spatial Reference Center (CSRC), and to support NGS related Height Modernization activities
• Also in 2001, NOAA is directed to work with Louisiana and Wisconsin to assess their requirements for Height Modernization
B A C K G R O U N D
Height Modernization Appropriations(FY01-FY06)
Fiscal Year Appropriations States
FY 2001 2.25 M CA, NC
FY 2002 3.75 M CA, NC, LA, WI
FY 2003 3.75 M CA, NC, LA, WI, MS
FY 2004 9.0 MCA, NC, LA, WI, MS,
AL, WA, SC
FY 2005 9.6 MCA, NC, LA, WI, MS,
AL, WA, TX, KY
FY 2006 9.9 MCA, NC, WI, MS,
AL, SC, TX, KY, AZ
B A C K G R O U N D
FY06 Height Modernization Funding($ in thousands)
CA 933California Spatial Reference Center at Scripps Institution of Oceanography
NC 933North Carolina Department of Environmental and Natural Resources (and North Carolina A&T State University)
WI 3,000 Wisconsin Department of Transportation
AL 1,971 Alabama Department of Revenue
MS 600 University of Southern Mississippi
TX 1,600 Texas A&M University, Corpus Christi
KY 500 Morehead State University
SC 467 South Carolina Geodetic Survey
*AZ 500 ???
NGS 233 Height Modernization Regional Expansion - NGS Implementation
* New state
B A C K G R O U N D
Height Modernization Status - 2006
Legend
Spatial Reference Centers
Regional Leaders
Lead Agencies
Height Modernization States
Interested States
B A C K G R O U N D
Why Height Modernization?
NOAA’s Height Modernization Program provides the means to determine accurate (land) elevations effectively (doing the right thing) and efficiently (doing things right).
N E E D S & B E N E F I T S
N E E D S & B E N E F I T S
• Master Plan for a spatial reference network in California
• CORS and traditional monuments along transportation corridors
• Implementation dependent on technological developments (wide-area RTK, real-time networks, and wireless communications)
• Complete data set of NAVD88 heights will be computed for the California CORS network.
California Spatial Reference Center
Tectonic Movement
N E E D S & B E N E F I T S
CORS/ExtensometersPAMsTMC Site
17
17 8 2
13
12
911
18
3 56
19
15
10 14
16
4
0021
26
2322
20
2724
28
NE
LKHU
ADKS
TMC
HOUSTON
FORT BEND
MONTGOMERY
GALVESTON
HARRIS
Water ManagementHarris-Galveston Subsidence District
N E E D S & B E N E F I T S
North Carolina Cooperative Technical State
Floodplain Mapping
N E E D S & B E N E F I T S
TransportationWisconsin Department of Transportation
• Began in 1998 - Wisconsin Department of Transportation
• Improve height data (the vertical component of the geodetic network)
• Eliminate inconsistencies between horizontal and vertical
• Supplement control where marks have been destroyed
• Create network that can fully utilize GPS technologies (cost effective)
N E E D S & B E N E F I T S
Louisiana Spatial Reference CenterSubsidence
N E E D S & B E N E F I T S
Measuring Heights Along Evacuation Routes Safety
N E E D S & B E N E F I T S
MAP Modernization
• Flood Insurance Risk Maps
• Determining High Water Marks
• Elevation Certificates
• Dam Safety
• Mitigation
N E E D S & B E N E F I T S
Alabama Department of Revenue
Alabama Department of
Transportation oversees surveying tasks
Goals- Primary Base Network
40 to 50 km grid- Leveling to Primary
Base Marks- CORS - County surveys
Mapping and GIS
N E E D S & B E N E F I T S
Water Levels
• Purchased equipment for 11 CORS • Eight Gulf Coast counties selected for CORS• Developed plan to extend CORS network
throughout the State (30 CORS)• USM Gulf Coast Research Lab installed
National Water Level Observation Network (NWLON) station co-located with CORS – Long-term plan to install two other
NWLON stations along the coast• Contract survey work planned • Height Modernization survey along
Mississippi River (Cairo, IL to the Gulf) completed in cooperation with USACE
University of Southern Mississippi
N E E D S & B E N E F I T S
Spatial Reference Center of Washington
• Ensure a high-accuracy geodetic reference network in WA (GPS, monuments, CORS, VRS networks, geodetic models).
• Ensure that survey data provided to NGS for inclusion into National Spatial Reference System (NSRS) database.
• Promote the Washington Spatial Reference System.
• Ensure availability of time-dependent geospatial information.
• Promote the development of specifications and guidelines for GPS surveys
• Serve as an educational source for users and potential users.
• Foster cooperation and partnerships
N E E D S & B E N E F I T S
TCOON
Texas Spatial Reference Center
• Texas Coastal Ocean Observation Network (TCOON)
• Improve geoid model in Texas/Gulf Coast Region
• Co-locate GPS CORS at Water Level gauges
• Measure/monitor subsidence in Harris Galveston Coastal Subsidence District
Texas A&M-Corpus Christi
N E E D S & B E N E F I T S
1st -- CORS
2nd -- GPS on BMs
Improved Geoid Model
Kentucky Height Modernization
Morehead State University
N E E D S & B E N E F I T S
Summary
• Good control produces consistent, accurate results
• Eliminates inconsistencies between horizontal and vertical control data
• Supplements control where marks have been destroyed or are deemed unusable
• Utilizes GPS technologies as a cost effective positioning tool
• Denser control can reduce survey costs
N E E D S & B E N E F I T S
• Program Management -- Congressional briefings, budget, grants management, coordination, outreach
• Outreach/Technology Transfer -- advisors, forums, workshops, conferences, publications, training, outsourcing
• Project Leadership -- project planning, specifications, guidelines, CORS management
• Quality Control -- training, assess techniques, survey control, load projects into NGS database
• Research and Development -- software development, remote sensing, modeling, investigate GPS techniques, antenna calibrations
NGS’ Role and Responsibilities
O U T R E A C H & E D U C A T I O N
N O A A T e c h n ic a l M e m o r a n d u m N O S N G S - 5 8
G U ID E L IN E S F O R E S T A B L IS H IN G G P S - D E R IV E D E L L IP S O ID H E IG H T S( S T A N D A R D S : 2 C M A N D 5 C M )V E R S IO N 4 .3
D a v id B . Z i lk o s k iJ o s e p h D . D 'O n o f r ioS t e p h e n J . F r a k e s
S i lv e r S p r in g , M D
N o v e m b e r 1 9 9 7
U . S . D E P A R T M E N T O F N a t i o n a l O c e a n i c a n d N a t i o n a l O c e a n N a t i o n a l G e o d e t i cC O M M E R C E A t m o s p h e r i c A d m i n i s t r a t i o n S e r v ic e S u r v e y
Harris-Galveston Subsidence District
State Agencies – North Carolina Geodetic SurveySouth Carolina Geodetic SurveyWisconsin Department of Transportation Alabama Department of Revenue Washington Department of Natural Resources
Spatial Reference Centers – California, Louisiana, Washington
Universities – University of Southern Mississippi North Carolina A&T State University Louisiana State University University of California/Scripps Texas A&M University-Corpus Christi
Morehead State University
Partnerships
O U T R E A C H & E D U C A T I O N
Forums, Conferences & Workshops
Height Modernization Forum, AL GPS Real-Time Networks in the Northwest, WA Height Modernization Workshop, NC Height Modernization Workshop, MO Height Modernization Forum, AK National Height Modernization Workshop, MD Trimble International User Conference, NV
Height Modernization Forum, Marquette, MIHeight Modernization Forum, Flint, MIHawaii Association of Land Surveyors, HIKentucky Association of Professional Surveyors, KYTennessee Association of Professional Surveyors, TN
O U T R E A C H & E D U C A T I O N
www.ngs.noaa.gov
O U T R E A C H & E D U C A T I O N
Height Modernization Web Page
O U T R E A C H & E D U C A T I O N
The Future
• Continue to investigate opportunities to modify procedures and processes to improve efficiencies.
• Provide outreach training and support to states interested in Height Modernization.
• Continue efforts to maintain and grow the program.
• Research new technology to enhance HMP efforts.
C O N C L U S I O N
Contact Information:
Juliana BlackwellHeight Modernization Program Manager
www.ngs.noaa.gov/heightmod/