meter and OBS arrays were relocated along the perimeter of the mound. Fig- 

 ure 1-20 shows waves breaking on the mound and the roving carriage posi- 

 tioned to collect data. 



STKO: Broad-crested offshore mound 



This test was similar to the previous test, except that more sand was added 

 to create a wider mound in the offshore to examine the effect of mound width 

 on wave dissipation. In both offshore mound tests, substantial dissipation of 

 the incident waves occurred by breaking on the mounds. 



Summary and Future Activities 



Instrumentation at SUPERTANK performed very well, and data were col- 

 lected for approximately 129 hr of wave action. The data sets contain a 

 wealth of information ranging from foreshore beach processes to inception of 

 sediment motion in the offshore, and they will be a valuable resource for 

 coastal engineering research for many years. 



Reduction and analysis of the enormous (multi-gigabyte) data sets were 

 accomplished as part of this report. Significant effort has been dedicated to 

 organizing and cleaning the data sets so that they may be accessed by all 



Figure 1 -20. Waves breaking on the narrow-crested offshore mound 



Chapter 1 Introduction to SUPERTANK 



25 



