FD2301 - Absolute fixing of tide gauge benchmarks - phase II

Theme:Strategy and Policy Development
Project status:Completed
Start date:03/07/2000
End date:30/06/2003
  • Risk,
  • Coastal Defence,
  • Flood and Coastal Defence,
  • Environmental Protection,
  • Land
  • Natural Environment Research Council


The deliverables for the research project were an improved monitoring network providing estimates of vertical land movements and recommendations on a strategy for long term monitoring. The absolute gravity results allow assessment of any systematic biases in the vertical velocities determinedfrom GPS. Improved guidance on long term sea level rise around the coasts will improve the design of coastal defences and other works. Once statistically significant estimates of vertical land movement at the tide gauges are available, it will be possible to separate this from the water level readings to assess thetrue sea level rise at the tide gauge.


Draft: To improve the monitoring of the vertical land movement component of changes in mean sea level using a combination of Continuously Operating GPS Receivers (COGRs) and episodic Global Positioning System (GPS) measurements around the coastline of Great Britain. Key Customer Purpose: Draft: To improve the determination of estimates of current changes in absolute mean sea level around the coastline of Great Britain in relation to flood defence and monitor changes in relative mean sea level on a local or regional scale.