Table 5. Summary of analyzed data.^'^ 



Survey period 



I 

 (N/s) 



Pl8 

 (N/s) 



^^s net 

 (N/s) 



Wave data 

 source 



Phase I 











30 July to 20 Aug. 197A 



182.1 



-120.3 



-70.4 



Wave gages (2) 



20 Aug. to 24 Sept. 1974 



144.6 



-153.5 



-107.3 



Wave gages (2) 



24 Sept. to 6 Nov. 1974 



171.2 



-295.8 



-137.6 



Wave gage8(2) 



6 Nov. 1974 to 7 Jan. 1975 



439.3 



-426.8 



-345.9 



Wave gageB(2) 



7 Jan. to 11 Feb. 1975 



401.4 



-446.6 



-466.6 



Wave gages (2) 



11 Feb. to 4 Mar. 1975 



245.8 



-330.9 



-186.4 



Wave gages(2) 



4 Mar. to 14 Apr. 1975 



326.2 



-782.8 



-753.8 



Wave gage8(2) 



Phase II 











20 Apr. to 20 May 1976 



113.8 



-204.4 



-197.6 



LEO 



20 May to 28 June 1976 



198.8 



-114.4 



-109.3 



LEO 



28 June to 12 Aug. 1976 



136.5 



-108.2 



-81.9 



LEO 



12 Aug. to 8 Sept. 1976 



107.6 



- 25.7 



+24.1 



LEO 



8 Sept. to 6 Oct. 1976 



176.1 



-187.4 



-143.1 



LEO 



6 Oct. to 1 Dec. 1976 



48.9 



-250.4 



-242.4 



LEO 



1 Dec. 1976 to 3 Feb. 1977 



141.9 



-279.2 



-245.7 



LEO 



3 Feb. to 22 Mar. 1977 



352.2 



-469.2 



-443.1 



LEO 



22 Mar. to 6 June 1977 



191.2 



-460.0 



-446.0 



LEO 



6 June to 21 July 1977 



66.7 



- 77.9 



+34.8 



LEO 



21 July to 30 Aug. 1977 



35.2 



-184.3 



-153.3 



LEO 



'Negative values of longshore energy flu 

 •ents flux toward Che sand crap. 



Pls' repre- 



2p£ values using wave daca were calculated In accordance with 

 equation (35); Pj- values using LEO observations were calculated 

 using equation (9). 



CiOO 

 SOO 

 400 

 300 



200 



. 100 



£ 80 



o 



01 60 



r 50 



S 40 



i 50 



:: 20 











=^^ 



i — 





rr 



^ 



=T 



f 





— 



— 







































^e. 





































































/ 















i 















•- 



/ 



































/ 





> 





























/ 



/ 























o 











''^ 



o 



■- 





























































/ 



































1 





























c 



/ 





































1 





























/, 



































/ 







o 















I = 



0.7 



8 



Pi 



> 





5PM, 197' 



')y 



/ 























1 / 



L> 



































































































































/' 1 



1 











1 

















r 





























/ 







LEGEND 



hose I Pj5 Volues Compofed Vio Wove 

 oqe Direcliorol Spectro 













/ 















/ 



/ 









G 







/ 



/ 











-- O p 

 C 



.1 



host 

 urren 



n 



1 M 



L_ 



elli 



L 



od 



L 



ill 



s Compute 



II 



d Vio 



LE 







L 







I 2 3 4 5 678 10 20 30 40 60 80 100 200 400 600 1,000 

 Longshore Energy Flux Factor at Breaking, P. (N/s) 



Figure 17. Sediment transport energy flux relation- 

 ship for Channel Islands study. 



37 



