GULF 



OF MEXICO 



Titne ond site of dye rcleose: 0530 nrs. at M 

 Tide- strong , flooding , diurnol 

 Wrnd SW , 10-12 Knots 



Time ond site of dye releose: 0530 hrs at ■ 

 Tide'. *eoK, ebbing, semidiurnal 

 Wind:- SW , 15-20 Knots 



The distribution of rhodamine B dye in Galveston Bay ship channel 

 on May 7, 1962 (left), and May 15, 1962 (right). 



Galveston Channel to the Pelican Island Bridge. The patch then passed under 

 the bridge and began to disperse in a generally northwest to northerly course, 

 as it had on the first dye release. A northeasterly shift was noted, and the 

 dye proceeded to diffuse into Galveston Bay. Samples taken for 3 days after 

 the drop indicated that the dye remained in the same general area between 

 Pelican Island and the Texas City Dike. 



Factors which had a direct effect on the direction of the currents 

 were: (1) wind direction, (2) wind duration, (3) wind velocity, (4) shape of 

 shoreline, and (5) amount of deep and shallow water. 



76 



