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Using continuous GPS and absolute gravity to separate vertical land movements and changes in sea-level at tide-gauges in the UK

Teferle, F. N; Bingley, R. M; Williams, S. D. P.; Baker, T. F.; Dodson, A. H. 2006 Using continuous GPS and absolute gravity to separate vertical land movements and changes in sea-level at tide-gauges in the UK. Philosophical Transactions of the Royal Society of London, A, 364 (1841). 917-930. 10.1098/rsta.2006.1746

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Abstract/Summary

Researchers investigating 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 vertical movements of the land at the specific tide-gauge. For a tide-gauge record to be used to determine the climate related component of changes in sea-level, it is therefore necessary to correct for the vertical land movement component of the observed change in sea-level. In 1990, the Institute of Engineering Surveying and Space Geodesy and Proudman Oceanographic Laboratory started developing techniques based oil the Global Positioning System (GPS) for measuring vertical land movements (VLM) at tide-gauges in the UK. This paper provides brief details of these early developments and shows how they led to the establishment of continuous GPS (CGPS) stations at a number of tide-gauges. The paper then goes on to discuss the use of absolute gravity (AC), as an independent technique for measuring VLM at tide-gauges. The most recent results, from CGPS time-series dating back to 1997 and AG time-series dating back to 1995/1996, are then used to demonstrate the complementarity of these two techniques and their potential for providing site-specific estimates of VLM at tide-gauges in the UK.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1098/rsta.2006.1746
Programmes: POL Programmes > Other
ISSN: 1364-503X
Format Availability: Electronic, Print
Additional Keywords: CONTINUOUS GLOBAL POSITIONING SYSTEM, ABSOLUTE GRAVITY (TGBMs), TIDE GAUGE, VERTICAL LAND MOVEMENTS, CHANGES IN SEA LEVEL, GEODETIC TIME-SERIES, CRUSTAL MOVEMENTS, NOISE
NORA Subject Terms: Marine Sciences
Earth Sciences
Data and Information
Related URLs:
Date made live: 09 Jul 2007 13:29
URI: http://nora.nerc.ac.uk/id/eprint/542

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