Hydrography and distribution of chaetognaths over the continental shelf off North Carol 



ina 95 



1 — 7 



5130 



.5131 



/^SISS 



5140 



.5154. 



..-.y Yiii 



o 



5(32 



Y 



35* 



34* 



33' 



79° 



78' 



75* 



Fig. 1 (B). Locations of stations on Atlantis Cruise 196, January 1954. Open circles indicate no 



plankton tows were made. 



1946; New York University, 1954) provide the energy for transient indrafts of Vir- 

 ginian Coastal water into Raleigh Bay. Three events may take place following such 

 an indraft: 



A. If the storm lasts for only a short period, one or two days, this water will 

 eventually become absorbed within the Carolinian Coastal water, modifying it in 

 proportion to the mixture. 



B. A violent meander of the Florida Current may completely sweep the indrafted 

 Virginian Coastal water out of Raleigh Bay toward the northeast. Such an event 

 would be aided by a southeast storm. 



C. If the northeast storm lasts for a period longer than two days or if another 

 northeast storm follows within a few days, the indrafted water may eventually be 

 driven around Cape Lookout into Onslow Bay. Such an occurrence could account 

 for the presence there of the winter-spring species with northern atlinitics described 

 by Williams (1948, 1949), Sutcliffe (1950), and Pearse and Williams (1951). 

 Should this occur at a time of substantial runoff when a southerly flowing coastal 



