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Measuring Changes in Ground Level at Tide Gauges using Continuous GPS and Absolute Gravimetry to Improve Estimates of Changes in Sea Level Around Britain
Bingley, Richard M; Teferle, Felix Norman; Dodson, Alan H et al.
2006In Proceedings of the 41st Defra Flodd and Coastal Management Conference 2006
 

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Keywords :
tide gauge; continuous GPS; absolute gravimetry; sea level; Britain
Abstract :
[en] Researchers studying climate change have used historical tide gauge measurements from all over the world to investigate the changes in sea level that have occurred over the last century or so. However, such estimates are a combination of any true sea level variations and any changes in ground level at the specific tide gauge. For a tide gauge record to be used to determine the climate related changes in sea level it is necessary to correct for any changes in ground level. The development in geodetic techniques for monitoring changes in ground level at British tide gauges has been on-going at the IESSG and POL since 1990, based on research funded by both Defra and the Environment Agency. Since 1996, this research has focused on the establishment of continuous GPS (CGPS) stations and the use of absolute gravity (AG), as independent geodetic techniques for measuring changes in ground level. This paper details the results of Defra/EA R&D project FD2319, which is part of the Risk Evaluation and Understanding of Uncertainty Theme. The paper shows how CGPS and AG have been used on a national scale to monitor changes in ground level at tide gauges and obtain estimates of changes in sea level, decoupled from changes in ground level.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Bingley, Richard M;  University of Nottingham
Teferle, Felix Norman ;  University of Nottingham
Dodson, Alan H
Williams, Simon;  National Oceanography Centre
Baker, Trevor;  National Oceanography Centre
Language :
English
Title :
Measuring Changes in Ground Level at Tide Gauges using Continuous GPS and Absolute Gravimetry to Improve Estimates of Changes in Sea Level Around Britain
Publication date :
2006
Event name :
41st Defra Flood and Coastal Management Conference 2006
Event organizer :
Department for Environment Fisheries and Rural Affairs
Event place :
York, United Kingdom
Event date :
04-07-2006 to 06-07-2006
Audience :
International
Main work title :
Proceedings of the 41st Defra Flodd and Coastal Management Conference 2006
Pages :
4
Funders :
Department for Environment Fisheries and Rural Affairs
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