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7.


It is important to recognise from the outset that the baseline physical environment is not static but instead will exhibit considerable variability due to cycles or trends of natural change. These can include the short-term effects of storms and surges, the well-observed patterns in the movement of tides during spring and neap cycles and the longer term effects of sea level rise associated with global climate change, for example.


7.2.2 Review of Existing Data and Information 8.


9.


The data and information requirements for formulating a conceptual understanding of the baseline physical environment of relevance to the proposed East Anglia THREE project can be classified into two areas: (i) material; and (ii) process.


The material data includes knowledge of the geology of the sea bed and underlying strata, the bathymetry, and the lithology and distribution of mobile and non-mobile sediments.


10.


The process data includes knowledge of the oceanographic forcing agents, such as winds, waves, tide-generated currents, their strengths, directions and variability with time, and the resulting sediment transport regime.


11.


Considerable data and information is already in existence relating to the material and processes of the baseline physical environment across the East Anglia Zone and much was collated for the East Anglia Zone Environmental Appraisal (ZEA), including data from the following sources:


• Marine Renewable Atlas (BERR, 2008); • Wavenet; • • • • • •


Preliminary Environmental Information May 2014


National Tide and Sea Level Forecasting Service; Extreme sea levels database (Defra et al. 2011); TotalTide (UKHO tidal diamonds); British Oceanographic Data Centre;


National Oceanographic Laboratory Class A tide gauges;


Baseline numerical model runs (ABPmer 2012a; 2012b; GL Noble Denton 2011);


East Anglia THREE Offshore Windfarm


Appendix 7.2 Page 2


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