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Abstract
A computer search was carried out for the current reports concerning
short term beach profile change: what causes it and how it is modeled.
The first section of this report comprises a summary of the major causes
of rapid profile change, storm induced wind and wave erosion and post
nourishment sorting. The mechanics of these erosion processes are
examined and the effects of recent storm events and nourishment on some
Newcastle and Port Stephens beaches is reported.
A summary was then made of some of the most notable post storm profile
prediction models and nourishment design techniques. The Dally and Dean
model was converted into a computer program from and used to predict the
resultant profile for Bar Beach, Newcastle following similar conditions to
the August, 1966 storm. These results were compared with the measured
post storm profile which found this model a good qualitative guide.
The nourishment design techniques were used to determine the overfill and
re nourishment factors for Nelson Bay Beach, Port Stephens based on the
sieve analyses for the borrow and natural material. These were then
compared with the actual loss rate due to sorting and found to be
reasonably accurate.