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Texas Coastal Ocean Observation Network TCOON

1. Texas Coastal Ocean Observation Network TCOON. Professor Gary Jeffress, RPLS Director, Conrad Blucher Institute for Surveying and Science Division of Nearshore Research Texas Spatial Reference Center. The Texas Coastal Ocean Observation Network (TCOON). 2. Texas Coastline

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Texas Coastal Ocean Observation Network TCOON

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  1. 1 Texas Coastal Ocean Observation NetworkTCOON • Professor Gary Jeffress, RPLS • Director, Conrad Blucher Institute for Surveying and Science • Division of Nearshore Research • Texas Spatial Reference Center

  2. The Texas Coastal Ocean Observation Network (TCOON) 2 Texas Coastline 590 kilometers

  3. TCOON Sponsors: 3 • Texas General Land Office • Asset Management • Coastal Resources • Permitting • Oil spill response • Texas Water Development Board • Estuary circulation modeling • Freshwater inflows • US Army Corps of Engineers • Ship channel and Intracoastal Waterway dredging • Permitting • Coastal construction • Coastal protection and restoration

  4. TCOON has many users 4

  5. Biggest users:The Public 5

  6. Subsidence/Sea Level Rise Trends in East Texas 6 From NOAA Co-Ops NGVD 29 NAVD 88

  7. Sea level Datums 7 Private State Mean Sea Level

  8. New Model Tide Gauges for Texas 8 Sabine Pass Entrance and Galveston North Jetty Includes a GPS CORS Station

  9. What is Mean Sea Level? 9 • mean sea level (MSL) • A tidal datum. The arithmetic mean of hourly heights observed over the National Tidal Datum Epoch (19 years) • [Latest Official Epoch 1983-2001] • Shorter series are specified in the name; e.g., monthly mean sea level and yearly mean sea level. From: TIDAL DATUMS AND THEIR APPLICATIONS NOAA Special Publication NOS CO-OPS 1 Silver Spring, Maryland June 2000

  10. 1983-2001 Epoch at Galveston 10 Changes mainly due to subsidence From NOAA Co-Ops Now Mean Sea Level X X 19 years

  11. Trend in MSL at Galveston Pier 21 11 Plot of 5-year moving average MSL mm Above Published Mean Sea Level

  12. MSL on NAVD 1988 Datum 12 MSL=1.02ft NAVD88 MSL=0.83ft NAVD88 MSL=0.65ft NAVD88 MSL=0.50ft NAVD88

  13. County Subsidence Concerns 13

  14. Outcome from old elevation data 14 Photo courtesy of Caroline Miller Country Roads Estate Subdivision, LaBelle Texas, Hurricane Ike, 2008

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