20. Mean monthly shoreline 

 position (locality) 



The average of mean monthly shoreline position at 

 a profile (definition 18) for all profiles at the 

 locality, weighted by distance between profile 

 lines. 



21. Change in mean monthly Difference between mean monthly shoreline positions 

 shoreline position (definition 20) calculated for 2 successive 

 (locality) months. 



22. Mean annual unit 



volume (profile line) 



The average unit volume at a profile line for a 

 given year, obtained by adding the unit volumes 

 from surveys during the given year and dividing 

 by the number of surveys . 



1 



V(p,t^) 



N ^i 



vCp^V) 



23. Change in mean annual 

 unit volume (profile 

 line) 



The difference between (22) calculated for the 

 given year and (22) calculated for the previous 

 year. 



24. Mean annual unit 

 volume (locality) 



AV(p,t ,t ,) 



V(p,t ) 



y 



v(p,t ) 



The average of mean annual unit voliimes at a pro- 

 file line (definition 22) for all profile lines 

 at the locality, weighted by the distance between 

 profile lines. 



25. Change in mean annual 

 unit volume (locality) 



The difference between mean annual unit volumes 

 (definition 24) calculated for 2 successive 

 years . 



26. Mean annual shoreline The average shoreline position at a profile line 



position (profile line) for a given year, obtained by adding the shoreline 



positions from surveys during the given year and 

 dividing by the number of surveys. 



MSL(p,t^) = ^ 



MSL(p,t^^) 



27. Change in mean annua] 

 shoreline position 

 (profile line) 



The difference between (26) calculated for the 

 given year and (26) calculated for the previous 

 year . 



AMSL(p,t ,t 



^^' y' y- 



) 



MSLI 



(p,t ) - MSL(p,t ) 



28. Mean annual shoreline 

 position (locality) 



The average of mean annual shoreline positions at 

 a profile line (definition 26) for all profile 

 lines, weighted by the distance between profile 

 lines . 



29. Change in mean annual 

 shoreline position 

 (locality) 



The difference between mean annual shoreline 

 positions (definition 28) calculated for 2 

 successive years. 



103 



