CONTENTS 



FIGURES--Continued 



Page 



20 View looking south at profile PL-0, 20 June 1971 40 



21 Upper flow regime conditions in a runoff channel, which has 



dissected the ridge surface near PL-0 40 



22 Initial swash overtopping ridge 41 



23 Flow separation occurring over the ridge slip face 41 



24 High tide beach face and ridge gradients at PL-0 and PL-6, 



measured July-August 1971 42 



25 Wave steepening of ridge gradient 44 



26 Erosion on backshore caused by runnel currents on berm surface. 44 



27 Maps of beach topography for 2 and 9 July 1971 45 



28 Ridge and runnel system at PL-0, 10 July 1971 47 



29 Initial stage of ridge welding onto the backshore at PL-0, 



11 July 1971 47 



30 Profile PL-0 on 12 July 1971, looking south 49 



31 Profile PL-0 on 14 July 1971, looking north 49 



32 Beach map for 13 July 1971 50 



33 Beach map for 20 July 1971 51 



34 Photo of profile PL-0 looking north, 22 July 1971 52 



35 Photo of profile PL- 10 looking southeast, 14 August 1971. ... 52 



36 Erosion-accretion map for the period 13 to 20 July 1971 .... 53 



37 Beach map for 25 July 1971 54 



38 Aerial photo of profiles PL-6 through PL-8, 25 July 1971. ... 55 



39 Profiling across low tide terrace, 7 August 1971 (PL- 7) .... 55 



40 Aerial view of northern half of study area, 25 July 1971. ... 56 



41 Erosion-deposition map for 2 July to 9 August 1971 57 



