Lowering of beaches in front of coastal structures is widely accepted as a leading
cause of failure. Beach lowering and toe scour is difficult to detect as the receding
tide and storm waves tend to bury this evidence and any damage to structure foundations.
The SCOPAC region includes numerous beach structures at risk of scour, with foundations
of poorly known depth and condition. Improved understanding of the scour risk at
these structures will help SCOPAC members to better manage the scour risk and to
design scour resistant replacements.
Dr Andy Pearce from the Eastern Solent Coastal Partnership (ESCP) is leading the
project and and has built upon the experience of Amanda Holland, a Ph.D student studying
short term beach level changes at Hayling Island.
So far the ESCP have deployed six scour chains at Stokes Bay (four attached to vertical
seawall and two attached to groyne posts) which are currently being monitored. The
team have also issued deployments at Southsea, Portsmouth, to measure changes in
beach levels and maximum scour depth during storms.
Stokes Bay seawall: toe piling exposed
Beach response in front of structures in open coast