Geological interpretation of current subsidence and uplift in the London area,UK, as shown by high precision satellite-based surveying |
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| Authors: | Don Aldiss Helen Burke Barrie Chacksfield Richard Bingley Norman Teferle Simon Williams David Blackman Richard Burren Nigel Press |
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| Institution: | 1. British Geological Survey (BGS), Keyworth, Nottingham, UK;2. Institute of Engineering Surveying and Space Geodesy (IESSG), UK;3. Proudman Oceanographic Laboratory (POL), UK;4. Nigel Press Associates Ltd (NPA), UK |
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| Abstract: | Long term planning for flood risk management in coastal areas requires timely and reliable information on changes in land and sea levels. A high resolution map of current changes in land levels in the London and Thames estuary area has been generated by satellite-based persistent scatterer interferometry (PSI), aligned to absolute gravity (AG) and global positioning system (GPS) measurements. This map has been qualitatively validated by geological interpretation, which demonstrates a variety of controlling influences on the rates of land level change, ranging from near-surface to deep-seated mechanisms and from less than a decade to more than 100,000 years’ duration. |
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| Keywords: | PSI Land level change Holocene Tectonic control London |
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