Table 9. — Comparison of position of Shelf Water-Slope Water front as detected by SOOP and N-69 charts. 



Appendix 





SOOP 



Distance 





N-69 



Distance 



figure 



Date 



bearing line 



nm (km) 



Date 



bearing line 



nm (km) 



23 



11-12 June 



Cape Charles 



132±15 



13-18 June 



Cape Charles 



156±18 







53° 



(245±28) 





53° 



(289±33) 



25 



14 Aug. 



Sandy Hook 



72±15 



12 Aug. 



Sandy Hook 



90±10 







141° 



(133±28) 





141° 



(167 ±19) 



27 



3-4 Sept. 



Cape Charles 



108±12 



Cloud cover in study area — no 









53° 



(200±22) 



measurement 



possible 





28 



29-30 Sept. 



Cape Charles 



66±10 



27 Sept.- 



Cape Charles 



66±12 







86° 



(122±19) 



lOct. 



86° 



(122±22) 



31 



9-10 Oct. 



Cape Charles 



132±20 



11 Oct. 



Cape Charles 



102±10 







53° 



(245±37) 





53° 



(189±19) 



SOOP sections, a bearing line was established to a near- 

 by landmark. The distance in nautical miles was 

 measured with a pair of dividers and an estimate of error 

 was made. The position of the front was then measured 

 along the same bearing line on the N-69 charts. These 

 comparisons are shown in Table 9. 



Within the estimated range of measurement error, the 

 positions determined from the two sources agreed close- 

 ly, suggesting that the methods currently used are 

 reliable indicators of the frontal position. 



ACKNOWLEDGMENTS 



Appreciation is extended to the Maritime Academy 

 Training representatives M. Chichurel and A. Finley in 

 New York and D. Thompson in New Orleans, La. Their 

 diligent efforts to place midshipmen on board ships that 

 were scheduled to traverse preselected oceanic areas were 

 instrumental to the success of this program. Also, thanks 

 are extended to H. O. Travis and the National Maritime 

 Research Center (NMRC) for their support in expanding 

 the SOOP effort. In addition, thanks are extended to the 

 Moore McCormack Lines and Grace Prudential Lines of 

 New York and the Delta Steamship Company and Sea 

 Land Shipping Lines of New Orleans. Finally, apprecia- 

 tion is accorded to the Marine Science Branch, Com- 

 mander Atlantic Area, U.S. Coast Guard, and to the 

 officers and crews of the USCGC Ingham and USCGC 

 Taney. 



LITERATURE CITED 



ANONYMOUS. 



1975. Gulf Stream meandering south of Cape Hatteras. Gulf- 

 stream, Natl. Weather Serv. l(l):6-7. 

 BIGELOW, H. B. 



1933. Studies of the waters on the Continental Shelf, Cape Cod to 



Chesapeake Bay. I. The cycle of temperature. Mass. Inst. Tech- 

 nol. and Woods Hole Oceanogr. Inst., Pap. Phys. Oceanogr. 

 Meteorol. 2(4), 135 p. 

 COOK, S. K. 



1973. Expendable bathythermograph observations from the 

 NMFS/MARAD Ship of Opportunity Program for 1971. U.S. 

 Dep. Commer., NOAA. Natl. Mar. Fish. Serv., Data Rep. 81, 

 132 p. 



1975. Expendable bathythermograph observations from the NMFS/ 

 MARAD Ship of Opportunity Program for 1972. U.S. Dep. Com- 

 mer., NOAA Tech. Rep. NMFS SSRF-692, 81 p. 



1976. Expendable bathythermograph observations from the NMFS/ 

 MARAD Ship of Opportunity Program for 1973. U.S. Dep. Com- 

 mer., NOAA Tech. Rep. NMFS SSRF-700, 13 p. 



CRESSWELL, G. M. 



1967. Quasi-synoptic monthly hydrography of the transition region 

 between coastal and slope water south of Cape Cod, Massachu- 

 setts. Woods Hole Oceanogr. Inst., Ref. No. 67-35, p. 1-47. 



GEMMILL, W. H. 



1974. Gulf Stream eddy tracking experiment. The Gulf Stream 

 Monthly Summary. U.S. Nav. Oceanogr. Off. 9(10):3-4. 



GEMMILL, W. H„ and R. E. CHENEY. 



1975. Float motions in a translating eddy. Gulfstream, Natl. 

 Weather Serv. l(3):6-7. 



KATZ, E. J. 



1969. Further study of a front in the Sargasso Sea. Tellus 21:259- 

 269. 

 KETCHUM, B. H„ and N. CORWIN. 



1964. The persistence of "winter" water on the continental shelf 

 south of Long Island, New York. Limnol. Oceanogr. 9:467-475. 

 VOORHIS, A. D. 



1969. The horizontal extent and persistence of thermal fronts in the 

 Sargasso Sea. Deep-Sea Res., Suppl. 16:331-337. 



VOORHIS, A. D., and J. B. HERSEY. 



1964. Oceanic thermal fronts in the Sargasso Sea. J. Geophys. 

 Res. 69:3809-3814. 

 WHITCOMB, V. L. 



1970. Oceanography of the mid-Atlantic Bight in supporting of 

 ICNAF, September-December 1967. U.S. Coast Guard Oceanogr. 

 Rep. 35, 157 p. 



WORTHINGTON, L. V. 



1964. Anomalous conditions in the Slope Water area in 1959. J. 

 Fish. Res. Board Can. 21:327-333. 



10 



