NO. 78 - March 1956 



11^ "Hurricanes Affecting The Coast of Texas From Galveston 



To Rio Grande" by W. Armstrong Price 



This report presents a collection of available data 

 on hurricanes reaching and passing inland over the 

 Texas coast between Galveston and the Rio Grande, 

 and certain statistical conclusions as to frequency 

 of occurrence are derived. Detailed data on the 

 storms and paths from 1818 to 1955 are presented as 

 appendices . 



NO. 79 - March 1956 



II-A "Orbital Velocity Associated With Wave Action Near The 



D Breaker Zone" by D. L. Inraan and Noriyuki Nasu 



F 



The orbital velocity associated with ocean surface 

 waves in shallow water was measured for various wave 

 conditions at La Jolla, California. Measurements were 

 made near the bottom and just seaward of the breaker 

 zone in water depths ranging from about 5 to 15 feet 

 and for wave heights as great as 7-1/2 feet, and are 

 presented. Observed maximum horizontal velocities 

 compare favorably with those predicted from solitary 

 wave theory when the ratio of wave height to water 

 depth is greater than about 0.4, the agreement with 

 theory being somewhat better for longer period waves. 



NO. 80 - April 1956 



I-A "Model Study of Overtopping of Wind -generated Waves On 



Levees With Slopes of 1;3 and 1;6" by Cevald J. Sibul 

 and Ernest G. Tickner 



The overtopping of wind-generated waves on levees 

 with slopes of 1:3 and 1:6 was studied in a laboratory 

 wind-wave tunnel and compared with other experiments 

 utilizing mechanically -generated uniform waves not 

 affected by wind. For low wind velocities results are 

 similar, but for higher wind velocities additional 

 overtopping occurs due to action of the wind so that 

 total overtopping may be separated into that due to 

 wave action and that due to wind action. Criteria 

 for estimating additional overtopping due to wind are 

 presented and discussed. 



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