- 5 - 



measure, it was possible to produce winds of hurricane force (100 

 "knots") from the simultaneous draught of three blowers running at 

 full speed. Due to the small horizontal scale and the vertical 

 exaggeration of the model, the capillary wave height was too small 

 and the capillary wave length was too large for wave action to be 

 in scale or to produce the significant mixing effects found in 

 nature * 



Rainfall . which amounts to 60 inches per year on a watershed of 

 some 1100 square miles to the north of the modeled area, drains 

 through the modeled area at the rate of approximately 450,000,000 

 cubic feet per day, according to Manner. This flow was introduced 

 in the Little Lake equivalent box at the northwest end of the model 

 by means of a pump attached to the tide machine. This pump drew 

 water from the Gulf and produced both a closed circulation system 

 for the rainfall, and a current of water through a venturi which 

 generated a slow longshore current moving v;estward along the coast 

 in agreement with known offshore circulation. 



Industrial wastes (also referred to as bleed water) were introduced 

 into the model through copper tubes embedded in the plaster and 

 terminated at their proper geographical positions on the Freeport 

 Sulphur Company properties. The injection ends of the tubes were 

 attached to open glass cups at the level of the water in the model. 



i!j/ The rainfall on the modeled area was disregarded. 



