Halcrow, Coastal Studies Forward Programme Data Compilation ...

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sample of quantified 3D data of coastal change need to be borne in mind whenmaking predictions of future shoreline change and should rightly be comparedwith analysis of historical coastal change data over much longer time periods.Perhaps most importantly, the coastal change signature over historical andcontemporary times may not be a good analogue for a transgressive regime ofrising sea-levels and shoreline erosion which needs to be considered inconceptual modelling of medium and long-term forecasting of coastal change atthe Sellafield and LLWR sites.”A summary of coastal monitoring, baseline surveys and analysis of historicalrates of change is provided in Section 3, while modelling and projections offuture coastal change based on current understanding, are presented in Section 4.1.4 Update since Halcrow (2009b)Since commissioning and completion of the 2009 coastal inspection (Halcrow2009a) and repeat baseline survey and analysis (Halcrow 2009b), LLWR havesought to address several key remaining uncertainties in the conceptual coastalchange projection model. This process began in early 2009 when LLWR conveneda two-day workshop (13 to 14 January) and invited a number of coastal changeexperts from industry and academia to comment on Halcrow’s work to the end of2008, and make recommendations for further work. Subsequent to this workshopa series of meetings were held with representatives from Halcrow, LLWR Ltd andURS Corp to further explore the application of numerical modelling approaches tocoastal change assessment. Key packages of work commissioned after theworkshop and subsequent meetings include:Geophysical survey of the Drigg spit and beach to characterise the spitstructure and inform the beach sediment budget. Data also have relevanceto the regional geological and hydrogeological model. Techniques usedinclude GPR and resistivity surveys of the spit and site frontage, EM31/EM34 and limited seismic refraction surveys of the beach. The work isbeing undertaken by a Halcrow/Quintessa/RSK STATS consortium.Application of the SCAPE model to the Drigg coastline to provideindications of coastal change over 100s to 1,000s of years under variousrelative sea-level rise scenarios. This work is being undertaken by RoyalHaskoning and provides an independent tool to the Conceptual CoastalChange Projection Model developed by Halcrow.Geological, sedimentological and geochronological investigation of theDrigg spit and coastal hinterland to confirm the spit structure and age ofDoc No 1 Rev 2: Date: May 2010 7
sediments, and inform future sediment budgets regarding the nature ofhinterland sediments and the elevation of rockhead. The work is beingundertaken by the British Geological Survey (BGS).Doc No 1 Rev 2: Date: May 2010 8
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Page 4 and 5: LLW Repository LtdCoastal Studies F
Page 6 and 7: LLW Repository LtdCoastal Studies F
Page 8 and 9: 1 Introduction1.1 Coastal studies f
Page 10 and 11: Table 1.1. Halcrow reports relevant
Page 12 and 13: Figure 1.1. Structure of the forwar
Page 16 and 17: 2 Coastal System Characterisation2.
Page 18 and 19: model whereby variations with depth
Page 20 and 21: total alongshore sediment transport
Page 22 and 23: UnitSt Bees HeadSt BeesPromenadeSt
Page 24 and 25: to have been characterised by fring
Page 26 and 27: Figure 2.3 Relative sea-level recon
Page 28 and 29: Period Sea-level RSL change Seabed
Page 30 and 31: Figure 2.4. Shoreline resistance mo
Page 32 and 33: The accuracy of the LiDAR surveys c
Page 34 and 35: CBU14. WhitriggsScar15. Carl Crag16
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Page 38 and 39: climate change and sea-level rise,
Page 40 and 41: 19902000201020202030204020502060207
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LLWR Coastal Studies: catalogue of
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