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PACIFIC SCIENCE, Vol. XXII, April 1968 
1962 1963 
Fig. 5. Seasonal fluctuations in beach sand reservoirs, selected beaches, eastern, northern, and southern 
sectors, Kauai. ( :!: Rates of accretion and erosion in 
3-month period, certain particular wave con- 
ditions are necessary. 3 The commencement of 
steep Kona waves along the western sectors of 
3 See Appendix, Hawaiian Wave Types. 
cubic yards/yard of beach/month.) 
the various Hawaiian islands activates beach 
erosion. When these waves cease running, the 
western beaches accrete. Accretion usually is 
accompanied by Southern Swell or near-quiescent 
conditions. 
