depth below datum (m) 



downcutting of cohesive profile (m) 



'Initial Profile 

 "Cohesive Profile 

 -Final (dS0=0.2inm) 

 * Final (d50=2.0mm) 

 - Coh. Erosion (0.2mm) 

 'Coh Erosion (2.0mm) 



6 



4 



2 







-2 



-4 



-6 



-8 



-10 



-12 



-14 



-16 



200 400 600 800 1,000 1,200 1,400 1,600 



distance (m) 



a. Profile R23 cohesive profile erosion during 2 November, 1991 storm, dgp = 0.2 mm & 2.0 mm 

 actual W.L. 



depth below datum (m) erosion of cohesive profile (m) 









i ' i - 



'-' 





4 



— Initial Profile 

 Cohesive Profile 



1 1 1 / 







2 



■ -Final (d50=0.2mm) 



'i / 











— Final (d50=2.0mm) 

 " ~ Coh. Erosion (0.2mm) 



u '. / 



-0.05 





M ' 



-2 

 -4 

 -6 



— Coh Erosion (2.0mm) 



f\\ yy 



-0.1 





- 



r-^^ 



-8 



_-— "^'^^^^ 







-10 



: ^^.^.-^-^^^^^^^^^^^^^ 



-0.1.5 





-12 



Z--^'"^^^^'^^^^^ 







-14 



1 . 1 . 1 , 1 . 1 , 1 1 1 . 1 







200 400 600 800 1,000 1,200 1,400 1,600 





distance (m) 





b. Profile R22 cohesive profile erosion during 2 November, 1991 storm, dgQ = 0.2 mm & 2.0 mm 

 actual W.L. 



Figure 21. Downcutting results for the 2 November 1991 (SW) storm. Runs A and G (Sheet 1 of 6) 



Chapter 4 Analyses of Coastal Processes and Geomorphology 



51 



