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Regional Coastal Monitoring Programmes

Survey Techniques

Land Survey

The onshore coastline, including beaches, saltmarsh and defences, are monitored through topographic survyes of transects that extend the length of the Anglian coast.  Every year "strategic" transect lines spaced

at 1km intervals are surveyed int he summer and winter seasons.  In addition to this, more intensive surveying occurs on a monitoring cell basis, depending on schemes and programmes, geomorphological interest,

flood and erosion risk or due to requests from coastal partners.

The transect line surveyed is the same each year and runs from behind the sea defence out to the low water.  The surveyor takes measurements of the beach height and slope using GNSS, they also note substrate type

and take photographs.

where more measurement points are required, instead of surveying along a fixed transect, spot heights at a minimum spacing of 5m are taken.  this is usually the case on a mangaged beach, such as one receiving sediment

renourishment.  Spot heights are taken using a quad bike or a surveyor on foot in areas where there is restricted access.

Spot height data can be tied in to the transect surveys for validation.  These data can also be integrated into the bathymetric and lidar survey datasets to produce digital terrain models.

Bathymetric Survey

We aim to survey the Anglian nearshore seabed every 5 years.  Previously this has been achieved by surveying one region per year

Aerial Photography

Digital aerial photography of the whole frontage is collected and delivered as ortho-rectified images

Wave monitoring

5 directional Waverider buoys were deployed in 2006 along the Anglian Region's coastal frontage at locations with water depths of approx. 20m below CD, along with 20 recorders (at locations with water depths of 4m to10m below CD). Suspended sediment data are collected in conjunction with the acoustic nearshore recorders.

From September 2009, the recorders will be removed but 4 of the 5 Waverider buoys will remain as part of WaveNet.