EOF results also show that Milford-on-Sea beach is in a state of
steady recession while the Narrabeen Beach shows a cyclic erosion–accretion variability. A multivariate technique
(Canonical Correlation Analysis, CCA) shows that on the composite beach a strong correlation exists
between incident wave steepness and profile response, which could be attributed to the unsaturated surf
zone, whereas on the sandy beach any correlation is much less evident.