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Changes in land and sea levels along the Thames Estuary and River Thames, UK

R. J. Burren(1), J. Hole(1), R. M. Bingley(2), F. N. Teferle(2), E. J. Orliac(2), A. H. Dodson(2), S. D. P. Williams(3), D. L. Blackman(3), T. F. Baker(3), D. T. Aldiss(4), H. C. Burke(4), B. C. Chacksfield(4) and D. G. Traghiem(4)

(1) NPA Group, Crockham Park, Edenbridge, TN8 6SR, United Kingdom
(2) Institute of Engineering Surveying & Space Geodesy, University of Nottingham, Nottingham, United Kingdom
(3) Proudman Oceanographic Laboratory, Joseph Proudman Building, Liverpool, L3 5DA, United Kingdom
(4) British Geological Survey, Kingsley Dunham Centre, Nottingham, NG12 5GG, United Kingdom

Abstract

Information on changes in land and sea level is vital to long term flood risk management (both operationally and strategically).

The 'Absolute fixing of tide gauge benchmarks and land levels: Measuring changes in land and sea levels around the coast of Great Britain and along the Thames Estuary and River Thames' project was carried out as part of the joint UK Department of Environment, Food and Rural Affairs / UK Environment Agency flood and coastal erosion risk management R&D programme and the UK Environment Agency Thames Estuary 2100 studies.

The project involved the combination of Persistent Scatterer Interferometry (PSI), GPS, absolute gravimetry, tide gauges and geoscience datasets in order to assess the combined impact of sea level rise and ground stability on flood risk.

The project concluded that the combined effect of changes in land and sea levels is a 1.8 to 3.3mm/yr rise in sea level with respect to the land along the River Thames and Thames Estuary over the past few decades.

This poster focuses upon the PSI analysis, and the subsequent integration and cross-comparison work, in particularly the geological interpretations of the measured ground deformation.

 

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry